Customization: | Available |
---|---|
Type: | Cystine |
Chemical Character: | Acidity |
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Items
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Specifications
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Appearance
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White crystals or crystalline powder.
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Specific rotation [a]o20
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-215°~-225°
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State of solution
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≥98.0%
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Chloride
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≤0.020%
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Ammonium
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≤0.02%
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Sulfate
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≤0.020%
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Iron
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≤20ppm
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Heavy metals
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≤10ppm
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Arsenic
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≤1ppm
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Other amino acids
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≤0.2%
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Loss on drying
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≤0.20%
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Residue on ignition
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≤0.10%
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Assay
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98.5~101.0%
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pH
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5.0~6.5
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