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specification of menthol crystal
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Testing Items |
Qlty. Criterion |
Testing Result |
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Color And Appearance |
Colorless, Transparent Hexagonal
Or Needlelike Crystals |
confirm |
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Odor |
Smell Like Menthol With Happiness |
confirm
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Melting Point |
41.5∼44 |
41.6-42.4 |
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25
Solubility |
1g5mL90
Melting 1 gram test samle into 5ml 90% alcohol |
confirm |
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% Non-Volatile Content |
≤0.050 |
0.002 |
|
25
Specific Rotation |
-50.0°∼-49.0° |
-49.50° |
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mg/kg
Arsenic Content |
≤3 |
<3 |
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pbmg/kg Heavy Metal PB rate (mg/kg) |
≤10 |
<10 |
| Chromatographic Purity |
≥99.5% |
99.6% |
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