| Appearance | White or almost white, crystalline powder or colourless crystals |
| Identification | IR,Characteristic Reaction and Test of chlorides |
| Assay | 98.5-101.0 |
| pH | 2.7-3.3 |
| Absorbance of solution | =<0.025 |
| Solubility | Freely Soluble in Water,Soluble in Glycerol,Slightly Soluble in Alcohol |
| Appearance of solution | Clear and not more than Y7 |
| Sulphates | =<300PPM |
| Limit of nitrate | No brown ring is produced |
| Heavy metals | =<20 PPM |
| Related substances | Any impurity % =<0.4 |
| Water | =<5.0 |
| Sulphated ash/Residueon ignition | =<0.1 |
| Chromatographic purity | =<1.0 |
Vitamin B1
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