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LCysteine
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CAS No.: 52-90-4 |
MF: C3H7NO2S |
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EINECS No.: 200-158-2 |
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Grade Standard: Food Grade, Medicine Grade |
Appearance: white or white crystalline powder |
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Item
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Limit
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Result
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Description
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White crystals or crystalline powder
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Conforms
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Identification
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Infrared absorption spectrum
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Conforms
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Specific rotation[a]D20°
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+8.3°~+9.5°
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+8.4°
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State of solution
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≥95.0%
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96.0%
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Chloride (Cl)
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≤0.04%
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Conforms
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Ammonium (NH 4 )
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≤0.02%
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Conforms
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Sulfate (SO 4 )
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≤0.030%
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Conforms
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Iron (Fe)
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≤10PPm
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6PPm
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Heavy metals (Pb)
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≤10PPm
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6PPm
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Arsenic (As 2 O 3 )
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≤1PPm
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Conforms
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Loss on drying
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≤0.5%
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0.33%
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Residue on ignition (sulfated)
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≤0.1%
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0.06%
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Assay
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98.0 ~ 101.0%
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99.5%
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PH
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4.5 ~ 5.5
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5.0
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Conclusion: The test result of the above mentioned product meets AJI92 standard.
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