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 |
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HALOGENS
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