Tuesday, 25 December 2012

Oxford ChemServe Product Inventory

This blog is now obsolete and has been replaced by our new ecommerce website OxfordChemServe.com. Please adjust your bookmarks!

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Welcome to the Oxford ChemServe blog. Here you can check out our inventory and purchase products via PayPal. Most of our products are also available via eBay: look out for the familiar eBay logo on product pages. We now also ship most products to European destination, via PayPal (this site) or your local eBay site. New products are added almost on a daily basis, so check back regularly!

NEW! Laboratory Glass Ware and assorted Products (Click here!) NEW!
A


Alum - Potassium Aluminium Sulphate - 200 g - Recrystallised
Aluminium Atomised Powder - 400 Mesh - 99.7 % - 200 g

Ammonium Alum - 100 g - RecrystallisedAmmonium Chloride - Salmiac - 200 g
Ammonium Ferrous Sulphate - 100 g (Mohr’s Salt)
Ammonium Hexachlorostannate - Pink Salt - 50 g
Ammonium Hexafluorosilicate - 99 % - 100 g
Ammonium (ortho)molybdate - min. 99 % - 100 g
Ammonium Sulphate - (NH4)2SO4 - Lab grade - 200 g

Ammonium Thiocyanate - NH4SCN - Chemically pure - 100 gAntimony Trisulphide 400 mesh - 100 g

B
Barium Carbonate - 100 g - BaCO3
Barium Nitrate - Ba(NO3)2 - 100 g
Biodiesel Titration KOH Solution - 500 ml
Bismuth Nitrate - 100 g - Lab-grade
Buffer Master Solution - pH = 4.7
Buffer Master Solution - pH = 7.5
Buffer Combo Master Solutions - pH = 4.7 and pH = 7.5


C

Calcium Carbonate - 99.9 % - 200 g
Cobalt Carbonate - CoCO3 - 200 g
Copper Basic Carbonate - Cu(OH)2.CuCO3 - 200 g
Copper Oxide - CuO - 100 g
Copper Sulphate Pentahydrate 200 g
Chromium Sulphate Hydrate - 99 % - 100 g
Cryolite - Na3AlF6 - 100 g

NEW! Laboratory Glass Ware and assorted Products (Click here!) NEW!

F


Ferric Ammonium Alum - 100 g


I


Iron (III) Oxide - 200 g
Iron (II) Sulphate 99 % - 200 g


L


Lead Acetate Testing Solution
Lead Nitrate - Pb(NO3)2 - chemically pure - 50 g


Lithium nitrate - 99 % - 100 g


M


Magnesium powder - 140 Mesh (105 Micron) - 99.5 % - 200 g
Manganese Carbonate - MnCO3 - 200 g technical
Methyl Orange pH Indicator Solution



N


Nickel Sulphate - 99 % - 50 g



P


Phenol - Reagent grade - 50 g
Phenolphtalein Biodiesel Titration Indicator - 50 ml
Potassium Bromide - KBr - 100 g

Potassium Chlorate - 99.9 % - 100 g
Potassium Chloride - KCl - 99 % - 100 g
Potassium Dichromate - K2Cr2O7 - 99 % - 100 g
Potassium Hexacyanoferrate (III) - 99 % - 100 g
Potassium Iodide - KI - 100 g

Potassium Permanganate - KMnO4 - 99 % - 100 g
Potassium Thiocyanate - 100 g

NEW! Laboratory Glass Ware and assorted Products (Click here!) NEW!

S


Sodium Bicarbonate - 99.44 % - 200 g
Sodium Bisulphate - 200 g
Sodium Dihydrogenphosphate - Na2H2PO4 - 150 g
Sodium Sulphite - Na2SO3 - 97 % - 200 g
Sodium Thiosulphate - Na2S2O3 - 98 % - 100 g
Strontium Carbonate - SrCO3 - 98 % - 100 g
Strontium Nitrate - 99.4 % - 100 g



T


Tin Chloride - Tin (II) Chloride - Reagent Grade - 50 g
Tin Metal Powder 99.91 % - 63 Micron - 100 gTitanium Dioxide, foodgrade > 99 % - 200 g


Z


Ultra Fine Zinc Powder - 900 Mesh - 99 % - 100 g
Zinc Sulphate - 200 g
Zirconium Silicate - ZrSiO4 - 200 g - mineral powder

NEW! Laboratory Glass Ware and assorted Products (Click here!) NEW!

Monday, 17 December 2012

Oxfordchemserve.com is launched!

It's official: our new oxfordchemserve.com webstore is now open for business!

Expect major changes to this here now largely redundant blog...

Saturday, 2 June 2012

The Thermite Report


The Thermite Report



Aluminothermic Reactions for Backyard Scientists

* * *

The Science of Extracting Metals and Alloys from their Oxides with ‘Goldschmidt’ (’Thermite’) Reactions

Gert Meyers – Oxford ChemServe (United Kingdom)

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·         37 pages, nearly 14,000 words, organised in 11 main sections (contents table included)

·         Ideal for element collectors, backyard scientists etc: make your own element samples for display or subsequent use!

·         Written by the author whose method was used by Theodore Gray (PopSci columnist) for home made Titanium (see PopSci No 76, January 2009, ‘Homemade Titanium’)

·         From theory (explained with the layman in mind) to practice: how to develop thermite formulations that deliver good quality metal

·         Practical formulations for 11 metals and for alloys

·         Jam packed with practical tips, how tos and other genuine advice to make anyone succeed

·         Troubleshoot thermites that don’t deliver

·         3 Appendices with highly relevant information

·         Referenced

·         FREE Postage worldwide!

·         Delivered as you choose: *.doc file by email, DVD by Royal Mail or printed hard copy by Royal Mail. Indicate your choice by means of the drop down menu.

Wednesday, 7 March 2012

Laboratory Pipettes



Pictured: 25 ml bulb pipette (E-MIL)




Borosilicate glass laboratory pipettes:

Brands: E-MIL, VOLAC and TECHNICO

Sizes:

* 25 ml bulb pipettes
* 10 ml bulb pipettes
* 5 ml bulb pipettes
* 3 ml bulb pipettes
* 1 ml bulb pipettes

5 ml graduated pipettes – graduation by 0.05 ml
* 0.2 ml graduated pipettes – graduation by 0.05 ml
* 0.2 ml graduated pipettes – graduation by 0.01 ml

British Standards compliant.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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pH Combination Electrode





Fitted with coaxial cable and BNC (Bayonet Neill-Concelman) type SL-31 connector.

The combined Electrode consists of glass and reference electrodes in a single entity. Therefore a separate, reference electrode need not be used along with this electrode. Below the cap of the electrode a hole is provided for filling the solution in the internal reference electrode. The reference electrolyte solution or filling solution is a freshly prepared 2 M Potassium Chloride (KCl) Solution.

Preparation for Use

Soak the glass bulb and the fibre junction of the electrode in N/10 Hydrochloric Acid for 24 hrs to activate the sensing membrane. Then rinse the bulb with distilled water a number of times. Never use ordinary tap water.

Preparation of N/10 Hydrochloric Acid

Take 1 ml of concentrated Hydrochloric Acid and dissolve it in 100 ml of double distilled water.

Shake the solution inside the electrode to let it fall into the bulb. Fill the electrode with freshly prepared 2 M Potassium Chloride solution into three fourth.

Preparation of 2 M Potassium Chloride Solution

Dissolve 14.91 g of A.R. KCl in 100 ml of double distilled water and add a few crystals of A.R. AgCl

Instructions provided with electrodes.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Laboratory Thermometer, Mercury, 0 to 360 C




Laboratory Thermometer – Mercury.

Temperature range: 0 – 360 Celsius

Sturdy construction, comes with protective casing for storage during non-use.

Dimensions: length 300 mm, diameter 5 mm.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Laboratory Wash Bottle, LDPE, 250 ml




Professional lab wash bottle (PE).


Capacity: 250 ml


Fully flexible wash tube with red, detachable nozzle (detach for higher throughput). Easily manipulate wash tube for quantitatively rinsing conical flasks, round bottom flasks and other laboratory glass ware.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Laboratory Funnel – 75 mm - Polypropylene



Laboratory plastic (polypropylene) funnel.

Dimensions: 75 mm at the widest point.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Crucible with Lid, Squat type, 50 mm with lid, Ceramic



Very high heat resistant laboratory crucible, with crucible lid.

Capacity: 50 ml.

Material: ceramic refractory.

Type: sturdy squat shape.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Clay Pipe Triangles, 50 mm – Crucible Support




Clay Pipe Triangle, support for lab crucibles when heating by Bunsen burner.

Dimensions: 50 mm.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Test tubes, round bottom, 12 x 100 mm (Pack of 10)




Pack of ten (10) test tubes - borosilicate glass.

Dimensions: 12 by 100 mm.

Highest quality possible, for small experimentation.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Nessler Cylinders - 100 ml (pair) – Borosilicate Glass




Nessler Cylinders - a pair (2) - borosilicate glass.

Nominal capacity: 100 ml (brimful capacity about 150 ml).

Dimensions: height = 240 mm, outer diameter = 25 mm.

Two graduation marks, one at 50 ml, one at 100 ml.

Rimmed neck with pouring spout.

Brand: EROSE.

Uses:

Essentially a pair of sturdy and roomy test tubes, Nessler cylinders are typically used for manual (without spectrophotometer), quantitative colorimetry. For instance, in the case of the quantitative determination of ferric ions with their blood red ferric thiocyanate (rhodanide) complex, 50 ml of a standard solution of Fe3+ (in the 100 - 500 ppm range) plus indicator is loaded into one tube, and a known volume of sample solution plus indicator in the other tube. By standard addition or by dilution with water the solution colour of both Nessler cylindesr is then matched visually and the concentration of Fe3+ in the sample solution calculated.

Of course the cylinders can also be used simply as large, sturdy test tubes for general use.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Glass Funnel - 75 mm – Borosilicate Glass



1 Laboratory (borosilicate) glass funnel.

Dimensions: 75 mm at the widest point.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Round Bottom Flask, rimmed, 250 ml Borosilicate Glass - flat bottom



Borosilicate glass round bottom flask with rimmed neck. High precision glass blowing at very affordable price.

Flat bottom.

Capacity: 250 ml.

Brand: EROSE.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Round Bottom Flask with Ground joint - 250 ml – Borosilicate Glass





Borosilicate glass round bottom flask with ground glass joint (24/29). High precision glass blowing at very affordable price.

Capacity: 250 ml.

Brand: EROSE.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Distillation Apparatus - 250 ml – Borosilicate Glass – Ground Glass Joints




All borosilicate glass: four parts: 250 round bottom flask, Liebig condenser (300 mm active length), bended connector tube and bended distillate collector. All four with ground glass joints (24/29). High precision glass blowing at very affordable price.


For simple, one-stage distillations. Replace the bended connector with Vigreux column or air-cooled Liebig condenser for fractional distillations.
Brand: EROSE. Inlet/outlet connectors of Liebig are ribbed for maximum hold on rubber inlet/outlet coolant tubing.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.


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Allihn Condenser - 300 mm – Borosilicate – Ground Glass Joints



Borosilicate glass Allihn condenser with ground glass joints (24/29). High precision glass blowing at very affordable price.

Brand: EROSE


Active cooler length 300 mm. Overall length about 450 mm.
Inlet/outlet connectors are ribbed for maximum hold on rubber inlet/outlet coolant tubing.


Allihn 'bulbed' coolers provide about 30 % higher cooling capacity than an equivalent Liebib. They are ideal for vertical condenser jobs like total reflux or Sohxlet

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.



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Tuesday, 6 March 2012

Liebig Condenser - 300 mm – Borosilicate – Ground Glass Joints

Borosilicate glass Liebig condenser with ground glass joints (24/29). High precision glass blowing at very affordable price.


Brand: EROSE.

Active cooler length 300 mm. Overall length about 450 mm.
Inlet/outlet connectors are ribbed for maximum hold on rubber inlet/outlet coolant tubing.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Monday, 5 March 2012

Burette with Rotaflow Stopcock - 25 ml - Borosilicate Glass





Borosilicate glass titration burette for volumetric analysis. High precision glass blowing at a very affordable price.


Titration capacity: 25 ml

Rotaflow stopcock.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

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Burette with Ground Glass Stopcock - 25 ml - Borosilicate Glass




Borosilicate glass titration burette for volumetric analysis. High precision glass blowing at very affordable price.


Titration capacity: 25 ml

Ground Glass stopcock. Easier to clean than Rotaflow.

Postage & Packaging: please note that we charge for postage the EXACT amount we pay to ship the item to you (1st Class for UK, regular Airmail for all European destinations, but for some items there is no shipping cost) and do not attempt to make a profit on shipping. Proof of postage is kept by us for all shipped items.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same (working) day or next (working) day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.





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Laboratory Glass Ware and assorted Products

Laboratory Glass Ware and assorted Products: for more information click links or contact us.

HEAT RESISTANT BOROSILICATE GLASSWARES

25 ml Burette with Rotaflow Stopcock
25 ml Burette with Straight Glass Stopcock
Laboratory Pipettes – Borosilicate Glass
Liebig Condenser 300 mm
Allihn Condenser 300 mm
Distillation Apparatus 250 ml
Round Bottom Flask with Ground joint 250 ml
Round Bottom Flask, rimmed 250 ml - flat bottom
Glass Funnels 75 mm
Nessler Cylinders 100 ml (pair)
Specific Gravity Bottle with glass stopper 25 ml
Test tubes, round bottom, 12 x 100 mm (Pack of 10)

PORCELAIN WARES

Clay Pipe Triangles, 50 mm
Crucible with Lid, Squat type, 50 mm with lid

POLYTHENE AND PLASTIC WARE

PP Funnel 75 mm
Laboratory Wash Bottle, LDPE, 250 ml

LABORATORY THERMOMETER

Laboratory Thermometer, mercury, 0 to 360 C

ENVIRONMENTAL INSTRUMENTS

pH combination electrodes

LABORATORY BALANCE

Analytical Balance 200 g x 0.1 mg


Sunday, 12 February 2012

Methyl Orange pH Indicator Solution - 50 ml


Chemical formula: aqueous solution of Methyl Orange (4-dimethylaminoazobenzene-4'-sulfonicacid sodium salt)


Synonyms: pH indicator solution, acid-base titration indicator

Amount: 50 ml

Appearance and odour: dark red-amber liquid without appreciable odour.

Grade: reagent

Packaging: professional white HDPE 50 ml dropper bottle with screw-on conical protective cap. Labelled.

Description and uses:
The colour of a methyl orange solution depends on the pH of the solution. Below pH = 3.1 it is a clear red, above 4.4 a clear yellow.

This makes it very suitable as an acid-base titration indicator, particularly for the titration of weak bases (ammonia and carbonates/bicarbonates for instance) with strong acids (HCl or H2SO4 typically). Add a few drops of the indicator solution to the sample of the solution to be titrated and titrate until the clear endpoint (transition from red to yellow) occurs.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same day or next day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.


CAS: 547-58-0 (pure methyl orange)


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Lead Acetate Testing Solution - 50 ml


Chemical formula: aqueous solution of lead acetate (approx. 10 % Pb(CH3COO)2 in water)

Amount: 50 ml

Appearance and odour: clear liquid, with weak odour of vinegar.

Grade: reagent

Packaging: professional white HDPE 50 ml dropper bottle with screw-on conical protective cap. Labelled.

Description and uses:
This testing solution shows all the typical reactions of an aqueous lead (II) solution.

With iodide ions (I-) yellow lead (II) iodide (PbI2) is formed, with sulphate ions, white lead (II) sulphate (PbSO4).

Test sample solutions for chromium (Cr) by oxidising to Cr (VI) with hydrogen peroxide (H2O2, then simmer to destroy residual peroxide), then add lead acetate test solution. Chromate (CrO4(2-)) and dichromate (Cr2O7(2-)) then causes intensely yellow lead (II) chromate (PbCrO4) to precipitate, if chromium was initially present.

This test solution is also extremely sensitive to sulphide ions (S2-) because black lead (II) sulphide is extremely insoluble. Apply this solution to good quality filter or blotting paper to obtain so-called ‘lead acetate paper’ with a low detection limit for sulphides, even hydrogen sulphide (H2S, rotting eggs or ‘stink bomb’ gas) in the air.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same day or next day at the latest.

Feedback & Complaints: not happy about something? Let us know first before you leave any feedback and we’ll bend over backwards to overcome the problem. Positive feedback always reciprocated.


CAS: 301-04-2 (pure lead acetate)



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Thursday, 9 February 2012

Lithium nitrate - LiNO3.3H2O - 99 % - 100 g



Chemical formula: LiNO3.3H2O

Synonyms: lithium nitrate trihydrate

Amount: 100 g

Appearance and odour: white, clear, slightly moist crystalline lumps without appreciable odour. Hygroscopic.

Grade: 99 %

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: an important, highly water soluble (about 90 g/100 ml at RT) inorganic lithium compound.

Using a flame test it reveals the strong carmine (red) emission line of lithium and the salt is therefore used for red colouring of flares and fireworks.

Thermal decomposition leads to lithium oxide (Li2O, a white solid) being formed.

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CAS: 13453-76-4


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Friday, 3 February 2012

Aluminium Atomised spherical - 400 Mesh (32 Micron) - 99.7 % - 200 g



Chemical formula: Al

Synonyms: aluminium powder, aluminum powder.

Amount: 200 g

Appearance and odour: very fine grey powder, without appreciable odour.

Grade: chemically pure (99.7 %), spherical - 400 Mesh (32 Micron)

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: this is a top notch grade, both in purity and fineness (400 mesh, 32 micron) suitable both pyrotechnical uses as well as various inorganic and organic synthesis. Ideally suited for super hot, lightening fast Thermite type reactions (Goldschmidt reactions).

Due to its high purity this product is very suited for direct halogenation either with chlorine of hydrogen chloride, to obtain anhydrous aluminium chloride, an important catalyst in Friedel-Crafts alkylation reactions.

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CAS: none

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Magnesium powder - 140 Mesh (105 Micron) - 99.5 % - 200 g



Chemical formula: Mg

Amount: 200 g

Appearance and odour: fine grey, metallic powder without appreciable odour

Grade: chemically pure (99.5 %), 140 Mesh (105 Micron)

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: this is a high end grade, both in purity and fineness (140 mesh, 105 micron) suitable for pyrotechnical uses, survivalism (fire making) as well as various inorganic and organic synthesis.

With many powdered strong oxidisers magnesium powder forms flash powders (reaction temperature reached is so high reaction products instantly vapourise).

In organic chemistry it's mainly used in Grignard reactions. This high grade is perfectly suitable as a Grignard substrate.

As a reducing agent in inorganic chemistry it reacts with anhydrous fluorides much the same way aluminium powder reacts with anhydrous oxides. Among the fluorides that can be successfully reduced to lump metal (and magnesium fluoride as a by-product) are several D-block element fluorides (TiF3, ZrF4 and others), as well as UF4 and ThF4.

From a molten mixture of anhydrous manganese (II) chloride and potassium chloride, slowly added magnesium powder precipitates pure manganese metal (a laboratory preparation method of manganese metal).

Magnesium is also a very powerful reducing agent in aqueous conditions.

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CAS: none
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Ammonium Hexafluorosilicate - (NH4)2SiF6 - 99 % - 100 g



Chemical formula: (NH4)2SiF6

Synonyms: ammonium fluorosilicate, ammonium fluosilicate, ammonium silicofluoride
Amount: 100 g

Appearance and odour: white crystalline powder without appreciable odour

Grade: 99 %

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: It is non-combustible. It corrodes aluminum. Used as a disinfectant, in etching glass, metal casting, and electroplating. The hardening of Plaster of Paris (Gypsum) is another application which probably relies on the formation of hard and insoluble CaF2.

This chemical is the basic ammonium salt of hexafluorosilicic acid (H2SiF6). In solution it is slightly alkaline due to hydrolysis:

SiF6(2-)(aq) + H2O(l) === > HSiF6(-)(aq) + OH-(aq)

The potassium salt of hexafluorosilicic acid is poorly soluble in water, the corresponding barium salt is water insoluble.

Hexafluorosilicates are considered ‘imperfect complexes’ and are similar in that respect to the salts of hexachlorostannic acid (H2SnCl6) and hexachloroantimonic acid (HSbCl6).

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CAS: 16919-19-0


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Thursday, 2 February 2012

Chromium Sulphate Hydrate - Cr2(SO4)3.12H2O - 99 % - 100 g



Chemical formula: Cr2(SO4)3.12H2O

Synonyms: chromium sulphate dodecahydrate, sulphate of chromium

Amount: 100 g

Appearance and odour: purple crystalline material without appreciable odour

Grade: 99 %

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: one of the most important, highly water soluble chromic (Cr III) compounds. Industrially used as a tanning agent.

Combined with potassium sulphate it forms a typical alum (chromium alum - KCr(SO4)2.12H2O) which crystallises into large, purple octagonal crystals.

With strong alkali chromium hydroxide (Cr(OH)3) is precipitated but due to chromium’s amphoterism this dissolves in excess alkali to blue-green chromite (Cr(OH)4(-)), showing strong similarity with aluminium in that respect. Chromite can be oxidised easily with hydrogen peroxide, to yellow chromate (CrO4(2-)), a Cr VI compound. On acidification the dichromate ion - Cr2O7(2-) is then formed.

Cr III compounds can be reduced by means of zinc powder (available from this seller) in acidic conditions, to form the poorly stable Cr2+ ion.


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CAS: 10101-53-8
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Potassium Hexacyanoferrate (III) - K3Fe(CN)6 - 99 % - 100 g



Chemical formula: K3Fe(CN)6

Synonyms: potassium ferricyanide, Prussian red, Red prussiate

Amount: 100 g

Appearance and odour: red crystals without appreciable odour

Grade: 99 %

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: one of the most important ferric complexes. So strongly complexed is the central Fe3+ ion that solutions of this compound do not exhibit reactions typical of ferric ions.

With ferrous ions (Fe2+) Prussian Blue (idealised: Fe7(CN)18) is formed and potassium hexacyanoferrate can thus be used as a detector of ferrous compounds.

Due to near perfect complexation, potassium hexacyanoferrate is relatively non-toxic, despite the high cyanide content. In highly acidic conditions the highly toxic gas HCN (hydrogen cyanide) may be formed, so caution is needed there.

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CAS: 13746-66-2
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Ammonium (ortho)molybdate - (NH4)2MoO4 - min. 99 % - 100 g



Chemical formula: (NH4)2MoO4.4H2O

Synonyms: ammonium orthomolybdate tetrahydrate, ammonium molybdate tetrahydrate

Amount: 100 g

Appearance and odour: white crystalline powder without appreciable odour

Grade: min. 99 %

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: an important, highly water soluble molybdenum compound.

It is perhaps most used for a simple qualitative test for phosphates: acidification of the sample and adding ammonium orthomolybdate results in a yellow colouration in the case of a phosphate positive sample.

Quantitative determination is also possible. From the relevant Wikipedia entry:

Colorimetric determination of P, As, Si and Ge

The determination of phosphorus, arsenic, silicon and germanium are examples of the use of heteropoly-molybdenum blue in analytical chemistry. The following example describes the determination of phosphorus. A sample containing the phosphate is mixed with an acid solution of MoVI, for example ammonium molybdate, to produce PMo12O403−, which has an α-Keggin structure. This anion is then reduced by, for example, ascorbic acid or SnCl2, to form the blue coloured β-keggin ion, PMo12O407−. The amount of the blue coloured ion produced is proportional to the amount of phosphate present and the absorption can be measured using a colorimeter to determine the amount of phosphorus. Examples of procedures are:

• the analysis of phosphate in sea water.
• standard methods for determining phosphorus and silicon content of metals and metal ores. (e.g. BSI and ISO standards)
• the determination of germanium and arsenic

The comparison of the measured absorption against readings taken for analyses of standard solutions means that a detailed understanding of the structure of the blue complex was unnecessary.
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CAS: 13746-66-2
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Wednesday, 1 February 2012

Ammonium Thiocyanate - NH4SCN - Chemically pure - 100 g

Ammonium Thiocyanate - NH4SCN - Chemically pure - 100 g


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Chemical formula: NH4SCN

Synonyms: ammonium rhodanide, ammonium sulphocyanide, ammonium thiocyanide

Amount: 100 g

Appearance and odour: white powder without any appreciable odour

Grade: Chemically pure

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses: an important pseudohalide compound, highly soluble in water and soluble also in acetone.

With Fe3+(aq) (ferric ion) it forms a blood red complex; FeSCN2+, a property used in analytical chemistry as a visual test for ferric ions. A KSCN solution is used in volumetric analysis as an indicator solution for redox titrations, using acidified ferric ammonium alum as titrant solution.

The red colour of the FeSCN2+ complex causes NH4SCN to be used for creating blood effects for film or theatre.

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CAS: 1762-95-4














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