L-Cysteine CAS NO.52-90-4

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Name: L-Cysteine
SKU: 52-90-4
Price: Inquiry Kilogram
Availability: InStock

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ITEMS	SPECIFICATION	RESULTS
Appearance	crystalline powder	Conforms
Melting point	About 205°C	206.4°C~206.7°C
Identification	Meet the requirements	Conforms
Appearance of solution	Clear, not more intense than Y7	Conforms
PH	2.4~3.0	2.6
Loss on drying	≤0.5%	0.0004
Sulphated ash	≤0.1%	0.0001
Heavy metals	≤20 ppm	<20 ppm
Related substances	≤0.25%	Conforms
Assay	99.0%~101.0%	0.998
Identification	Meet the requirements	Conforms
Loss on drying	≤0.5%	0.0004
Residue on ignition	≤0.1%	0.0001
Heavy metals	≤0.003%	<0.003%
Residue solvent - Ethanol	≤0.5%	<0.04%
Chloride	16.9%~17.6%	0.171
Assay	98.0%~102.0%	1
Conclusion: The product complies with BP2010/USP32/EP6 standard

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