Customization: | Available |
---|---|
Type: | Cystine |
Chemical Character: | Neutral |
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Items- | Specification |
Appearance | White crystals or crystalline powder |
Identification | IR |
Assay | 98.5 % ~ 101.0% |
Specific optical rotation[a]D20° | -215 ° - -225 ° |
Loss on drying | Not more than 0.2% |
State of solution (Transmittance) | Conforms |
Residue on ignition (sulfated ) | Not more than 0.10% |
Chloride (Cl) | Not more than 0.040% |
Heavy metals (Pb) | Not more than 10ppm |
Sulfate(SO4 2-) | Not more than 0.020% |
Arsenic(As2O3) | Not more than 1 ppm |
Iron(Fe) | Not more than 10ppm |
Ammonium (NH4+) | Not more than 0.02% |
PH | 5.5~6.5 |
Other amino acids | Chromatographically not detectable |