Sodium hydrogen carbonate usp |
|
code number |
67116 |
synonym |
sodium bicarbonate; baking soda |
cas no. |
144-55-8 |
molecular formula |
nahco3 |
molecular weight |
84. 01 |
description |
white crystalline powder |
solubility |
soluble in water, insoluble |
identification |
sodium=+ve & bicarbonate =+ve |
loss on drying over silicagel for 4 hrs. |
max. 0. 25% (over slilica gel for 4 hrs) |
insoluble substancess |
5% solution is complete and clear |
normal carbonate |
per usp |
chloride |
max. 0. 015% |
sulphur compounds |
max. 0. 015% |
arsenic |
max. 0. 0002% |
ammonia |
per usp |
heavy metals |
max. 0. 0005% |
residual solvents |
per usp |
assay on dry basis |
99. 0--101. 0% of nahco3 |
HALOGENS
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