This product can be used for titration analysis, qualitative and quantitative analysis, etc. It should be stored in a cool, ventilated place, sealed, and used within its expiration date. To obtain the product's Certificate of Analysis (COA), please visit www.howeipharm.com to view and download it.
Standard : Q/HWC032-2020 广州和为医药科技有限公司化学品制造标准
Product No. : CD102303
Product Name : L-Cysteine
Product Spec. : 99%
Packges : 100g 500g 1kg 25kg
分子式 : HSCH2CH(NH2)CO2H
分子量 : 121.16
贝尔斯坦(Beilstein)注册号 : 1721408
EINECS 编号 : 200-158-2
FEMA Number : 3263
Flavis number : 17.033
MDL编号 : MFCD00064306
PubChem Substance ID : 24901592
CAS号 : 52-90-4
颜色外观 Color Appearance : white crystal or crystal powder
红外光谱鉴别 Infrared spectrometry : 合格 Pass
含量 Assay : ≥99%
pH(25 ℃) : 4.5-5.5
溶液状态 State of solution : ≥95.0%
氯 Chloride(Cl) : ≤0.02%
铵 Ammonium（NH4） : ≤0.02%
硫酸盐 Sulfate(SO4) : ≤0.03%
铁 Iron(Fe) : ≤10 PPM
重金属(以 Pb 计) Heavy metals (as Pb) : ≤10 PPM
三氧化二砷 Arsenic(As2O3) : ≤1 PPM
其他氨基酸 Other amino acids : 合格 Pass
干燥失重 Loss on drying : ≤0.5%
灼烧失重 Residue on ignition : ≤0.1%
熔点 Melting range, ℃ : 240 ℃
Shelf Life ： 730 Days
COA ： Have COA
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