product: d-biotin
other name: biotin,vitamin h,coenzyme r,vitamin b7
cas: 58-85-5
molecular formula: c10h16n2o3s
appearance: white or off-white crystalline powder
specifications: 1% 2% 99%
ref standard: ep7.0 & usp34
items & results |
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item |
spec. |
result |
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appearance |
white off-white powder |
conforms |
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specific rotation |
+89°~ +93° |
+90.77° |
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residual solvents |
chloroform:≤ 6ppm pyridine:≤ 20ppm ethanol:≤ 500ppm |
0.01ppm 0.01ppm 20ppm |
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melting range |
229~233°c |
229.7-230.4°c |
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loss on drying |
≤1.0% |
0.19% |
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bulk density |
~0.3g/cm³ |
conforms |
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sulfate ash |
≤ 0.1% |
0.016% |