L-Cysteine hydrochloride monohydrate

CAS No.:7048-04-6
Standard: AJI, USP

Function and application: It is mainly used in biochemical research, medicine for various alopecia, food seasoning, etc
Packaging: 25kg/bag(drum), others as required
MOQ：25kg
Shelf life: two years

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分子量:

CAS 号:

7048-04-6

Specification:

L-Cysteine hydrochloride monohydrate	AJI92	USP39
Appearance	White crystals or crystalline powder	White or almost white, crystalline powder or colourless crystals
Solubility	---	Freely soluble in water, very slightly soluble in alcohol
Assay	99.0%～100.5%	98.5%~101.0%
Identification	---	Conforms
pH	1.5～2.0	1.5~2.0
Optical rotation	+5.5º~+7.0º	+5.7°~ +6.8°（t=25℃） +5.5°~ +7.0°（t=20℃）
State of solution	≥98.0%	---
Loss on drying	8.5%～12.0%	8.0%~12.0%
Residue on ignition	≤0.10%	≤0.1%
Chloride	19.89%～20.29%	---
Heavy metals	≤10ppm	≤10ppm
Iron	≤10ppm	≤20ppm
Sulfate	≤0.02%	≤0.03%
Ammonium	≤0.02%	≤0.02%
Arsenic	≤1ppm	≤0.5ppm
Other amino acids	Conforms	---
Lead	---	≤1ppm
Cadmium	---	≤0.5ppm
Mercury	---	≤0.1ppm
Individual Impurities (Ninhydrin Positive)	---	≤0.50%
Total Impurities ( Ninhydrin Positive)	---	≤2.0%
Total viable count	---	≤1000 cfu/g
Yeast and Mould	---	≤100 cfu/g
Enterobacteriaceae	---	Negative/10g
Salmonella sp.	---	Negative/10g
Coliform bacteria	---	Negative/g
Escherichia coli	---	Negative/g
Staphylococcus aureus	---	Negative/g
Bacillus sp.	---	Negative/g
Clostridium sp.	---	Negative/g

CONTACT US

Shijiazhuang Haitian Amino Acid Co., Ltd.

TEL：+86-311-88908111
FAX：+86-311-88901888
EMAIL：sales@aminoacidchem.com
ADD：Shijiazhuang City, Hebei,P. R. China.

Powerby: 300.cn

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