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Test | Standard | Result |
Solubility | Freely soluble in water, slightly solub;e in methanol, insoluble in acetone & dehydratealcohol & in benzene | Conforms |
Identification | as per usp | calcium = +ve acetate = +ve |
ph of 5% w/v solution | 6. 8 – 9. 6 | 8. 12 |
water | max. 7. 0% | 5. 9% |
arsenic (as) | max. 3ppm | complies |
fluoride | max. 0. 005% | complies |
lead (pb) | max. 0. 001% | complies |
heavy metals ( as pb) | max. 0. 0025% | complies |
chloride (cl) | max. 0. 05% | complies |
sulphate (so4) | max. 0. 06% | complies |
nitrate(no3) | as per usp | complies |
readily oxidisable | as per usp | complies |
substances residual solvents | as per usp | complies |
assay ( on anhydrous basis) | 99. 0 – 100. 5% | 99. 46% c4h6cao4 |