Chemical formula: NaHCO3
Synonyms: sodium hydrogencarbonate, baking soda, bicar.
Amount: 200 g
Appearance and odour: white micro-crystalline powder, without appreciable odour
Grade: 99.44 % pure.
Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labeled. Bottle and cap are UN approved and reusable.
Description and uses: sodium bicarbonate is the main constituent of baking soda but at this purity this isn't any old sodium bicarbonate (baling soda usually contains an anti-caking agent).
At about 200 centigrade or higher, sodium bicarbonate loses water and carbon dioxide very swiftly and is converted to pure anhydrous sodium carbonate (Na2CO3), a good primary alkaline standard for acid-base solutions and a premium dryinh gant for many organic solvents.
Sodium bicarbonate is only sparingly soluble in water and reacts slightly alkaline.
It has the peculiar property that the neutralisation reaction with weak acids, which releases carbon dioxide, is slightly endothermic, an interesting demonstration of an endothermic reaction.
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