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Vitamin B1 59-43-8 Vitamin B1 Mono
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White crystalls or crystal powder; Have a faint, smelly, bitter taste, have led to wet, dew in the air, easy to absorb moisture. Easy to decompose metamorphism in alkaline solution.PH 3.5 to 100 ºC high temperature resistant, acid and alkali easy failure is greater than 5.Light and heat titer decreased. Reason should be placed in the window, cool, preservation, storage should not be long. In acidic solution is stable, in the alkaline solution is not stable, susceptible to oxidation and heat damage. Reducing substances sulfite, such as sulfur dioxide can make vitamin B1 inactivation
Specification
Testing Item | Standard | Result |
Appearance | White or almost white, crystalline powder or small, colourless granule | conforms |
Assay (on dry basis) | 98.5% ~ 101.0% | 100.00% |
Identification | A: IR absorption; | conforms |
C: Reaction of nitrates | ||
Appearance of solution | Clear, not more intense than Y7 | conforms |
PH | 6.8 ~ 7.5 | 7.2 |
Loss on drying | ≤0.5% | 0.08% |
Chloride | ≤0.06% | <0.06% |
Sulphated ash | ≤0.1% | 0.02% |
Heavy metals | ≤10 ppm | <10 ppm |
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