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L-Cystine Essential Amino Acid Nutritional Supplement

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L-Cystine

L-Cystine

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L-Cystine Essential Amino Acid Nutritional Supplement

L-Cysteine , CAS: 52-90-4 , amino acid

Product Name: L-Cysteine
CAS: 52-90-4
MF: C3H7NO2S
MW: 121.16
EINECS: 200-158-2
Mol File: 52-90-4.mol

Mainly Uses:
L-Cysteine Hydrochloride Monohydrate is widely used in fields of medicine, food processing, biological study, materials of chemical industry and so on.

It’s used as raw materials for manufacturing N-Acetyl-L-Cysteine , S-Carboxymethyl-L-Cysteine and L-Cysteine base etc.

Used in the cure of liver disease, antioxidant and antidote. It is a promotor for bread fermentation. It promotes the form of glutelin and prevents from getting ageing.

Also used in cosmetic.

ItemsStandardsResults
AppearanceWhite crystals or crystalline powderConforms
IdentificationInfrared absorptionConforms
Specific Optical Rotation+8.3°~ +9.5°+8.9°
State Of Solution≥98.0%98.60%
Chloride≤0.04%<0.04%
Ammonium(Asnh4)≤0.02%<0.02%
Sulfate(SO4)≤0.03%<0.03%
Heavy Metal≤10PPM<7PPM
Arsenic≤1.0PPM<0.2PPM
Cadmium≤1.0PPM<0.05PPM
Lead≤1.0PPM<0.1PPM
Mercury≤0.1PPM<0.02PPM
Other Amino AcidsChromatographically not detectableQualified
Loss On Drying≤0.50%0.30%
Residue On Ignition≤0.20%0.08%
Assay98.5 ~ 101.0%99.50%
Ph4.5~5.54.8
Total plate count≤1000cfu/g<1000cfu/g
Yeast & Mould≤100cfu/g<100cfu/g
E.ColiAbsentAbsent
SalmonellaNegativeAbsent