Features
- L-Cysteine Hydrochloride Monohydrate
- (R)-2-Amino-3-mercaptopropionic acid monohydrochloride monohydrate
- CAS No : 7048-04-6 C 3 H 7 NO 2 S . HCl . H 2 O : 175.64 Nitrogen : 7.97%
- L-Cysteine Hydrochloride Monohydrate, when dried, contains not less than 98.5 percent and not
more than 101.0 percent of L-Cysteine Hydrochloride (C 3 H 7 NO 2 S . HCl . H 2 O)
Application
Cosmetic (permanent wave lotion), Food, Medical
Description
White crystals or crystalline powder; strongly acid taste. Very soluble in water.
Identification
Compare the infrared absorption spectrum of the sample with that of the standard by potassium bromide disc method.
Packing
25kg, 50kg fiber drum
Storage
Cool and dark place
Specification ( for food, normal crystal & powder )
Item |
Limit |
|
98.5 to 101.0% |
State of solution (Transmittance) |
clear and colorless not less than 98.0% |
Specific rotation
[ α ]n D 20
|
+6.1 to +7.8 |
|
1.5 to 2.0 |
|
not more than 0.02% |
|
19.89 to 20.29 |
|
not more than 0.02% |
|
not more than 1 ppm |
|
not more than 10 ppm |
|
not more than 10 ppm |
Other amino acids |
conforms |
Loss on drying |
8.50 to 12.00% |
Residue on ignition(sulfated) |
not more than 0.10% |