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L-Cysteine Hydrochloride Anhydrous
  Quality standard:USP, AJI
CAS No.: 52-89-1
Kosher:?ì
Halal:?ì
Class:

Chemical Name: L-Cysteine hydrochloride hydrate
Structure Formula:
                 
Molecular Formula: C3H7NO2S.HCl
Molecular Weight: 157.6147
Cas No: [52-89-1]
Characteristics: White crystals or crystalline powder; strongly acid taste.
Quality Standards: USP, AJI.

 

Item Specifications
USP AJI
Appearance White crystals or crystalline powder;
strongly acid taste.
Identification Infrared Absorption - - -
Specific optical rotation +5.6 °- +8.9 ° +5.6 °- +8.9 °
State of solution
(Transmittance )		 - - - ≥ 98.0%
clear and colorless
Sulfate ≤ 0. 03 % - - -
Iron ≤ 0. 003 % - - -
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, ≤ 1 % ≤ 1 %
Residue on ignition, c ≤ 0.1%
Assay 98.5-101.5 % 9 8 .0-10 2 %
pH value - - - 1.5 - 2.0
Organic volatile impurities Meets the requirement - - -
Chromatographic purity 0.5% max Individual impurity, 2% max total - - -

 

Packaging and Storage: In 25kgs f iber drum double polyethylene bags inside; Preserve in well- closed containers, at controlled room temperature.
Recommended limit: 2 year.