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25 Kilogram |
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Calcium Dobesilate Monohydrate high quality Calcium Dobesilate monohydrate 99% Calcium Dobesilate Monohydrate
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6. Quality standard: EP6.0/BP2005.
Identification
|
The specific absorbance at the maximum at 301 nm is 174 to 181.
|
A blue colour and a precipitate are immediately produced. |
|
Solution S gives reaction of calcium |
|
Appearance of solution
|
Solution S is clear and colorless
|
pH |
4.5 to 6.0 |
Hydroquinone |
Not more than 0.1% |
Heavy metals |
Not more than 10ppm |
Iron |
Not more than 10ppm |
Water |
4.0% to 6.0% |
Assay |
Calcium dobesilate monohydrate contains not less than 99.0 per cent and not more than the equivalent of 102.0 per cent of calcium di(2,5-dihydroxybenzenesulphonate), calculated with reference to the anhydrous substance |
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