L-Cysteine Hydrochloride Monohydrate 7048-04-6 low price L-Cysteine Hydrochloride Monohydrate
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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 antidoteIt is a promotor for bread fermentation. It promotes the form of glutelin and prevents from getting ageing.Also used in cosmetic.
Item |
Specifications |
|
USP |
AJI |
|
Appearance |
White crystals or crystalline powder; strongly acid taste. |
|
Identification |
Infrared Absorption |
— |
Specific optical rotation |
+5.6 °- +8.9 ° |
+5.5 °- +7.0 ° |
State of solution (Transmittance) |
— |
>= 98.0% clear and colorless |
Chloride (Cl) |
— |
19.89-20.29% |
Ammonium(NH4) |
— |
=< 0. 002% |
Sulfate |
=< 0. 03 % |
=< 0. 020% |
Iron |
=< 0. 003 % |
10ppm |
Heavy Metals (as Pb), |
=< 0.00 15% |
=< 10ppm |
Arsenic (as As), |
— |
=< 1ppm |
Other amino acids |
— |
Not detected |
Organic volatile impurities |
Meets the requirement |
— |
Loss on drying, |
8-12 % |
8.5-12 % |
Residue on ignition, |
c |
=< 0.1 0 % |
Assay |
98.5-101.5 % |
9 9.0-10 0.5 % |
pH value |
— |
1.5-2.0 |
Organic volatile impurities |
Meets the requirement |
— |
Chromatographic purity |
0.5% max Individual impurity, 2% max total |
— |
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