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L-Cysteine base

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  Post Date: Nov 25,2016
  Expiry Date: May 24,2017
  Detailed Description: Cas No. :52-90-4 L-Cysteine base


Cas No.:52-90-4

Quality Standard: AJI97

Description: white crystals or crystalline powder.

Solubility (H2O, g/100g): about 16(20°)

Specific rotation: +8.3 to +9.5°

State of solution(transmittance): Not less than 95.0%

Chloride: Not more than 0.04%

Ammonium: Not more than 0.02%

Sulfate: Not more than 0.030%

Iron: Not more than 10ppm

Heavy metals(Pb): Not more than 10ppm

Arsenic: Not more than 1ppm

Other Amino Acids: conforms

Loss on drying: Not more than 0.5%

Residue on ignition(sulfated): Not more than 0.10%

Assay: 98.0 to 101.0%

PH: 4.5 to 5.5

Storage: Preserve in tight containers at controlled room temperature.

Recommended limit: 1 year


EXW Price: USD18/KG

ivy8888@chembj.com

  CAS Registry Number:

52-90-4

  Synonyms: ;Cysteine, L-;L-(+)-Cysteine;L-Alanine, 3-mercapto-;L-Cys;NSC 8746;L-Cysteine;(+)-2-Amino-3-mercaptopropionic acid;L-beta-mercaptoalanine;L-Cysteine Free Base Crystalline;(S)-(-)-Cysteine;L-Cysteine Base;H-Cys-OH;
  Molecular Formula: C3H7NO2S
  Molecular Weight: 121.15
  Molecular Structure: 52-90-4 L(+)-Cysteine
  Hazard Symbols:  Xn:Harmful;
  Risk Codes: R22:;
R36/37/38:;
  Safety Description: S26:;
S37/39:;

  Company: Wuhan Yuancheng Gongchuang Tech. Co.,Ltd.     [ China ]        
  Contact: qiuqiu
  Tel: 8615271879973
  Fax:
  Email: ivy8888@chembj.com
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