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Certificate of Analysis
Product Name: L-Cysteine Hcl Catalogue Number: RR-60960
Batch Size: N/A Lot Number: 20230109
CAS Number: 52-89-1 Production Date:
Molecular Formula: C3H8ClNO2S Report Date: 2023-01-09
Molecular Weight: 157.62 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance White to Light yellow to Light orange powder to crystal Complies
Assay 99.0~100.5% 99.72%
pH 1.5~2.1 1.72
Specfic rotation[a]]D20 +6.5°~+8.9° +6.75°
Ammonium ≤0.02% <0.02
Sulfate ≤0.02% <0.02
lron ≤10PPM 5PPM
Heavy metals(Pb) ≤10PPM <10PPM
Arsenic ≤1PPM <1PPM
Other amino acids Not detectable Not detectable
Loss on Drying ≤2.0% 0.97%
Residue on ignition 0.10% <0.10%
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