L-Cysteine

Category:Natural Extracts > Cosmetics Raw Materials
Product Name:L-Cysteine
CAS No.:52-90-4
Standard:JP
Price(USD):Negotiable
Company:Maanshan Tiantai Biotechnology Co.,Ltd

Basic Info
  • Grade: Cosmetic Grade

    Factory Location: Ma'anshan, China

    Main Sales Markets: North America,Central/South America,Western Europe,Eastern Europe,Australasia,Asia,Middle East,Africa

  • Sample Provided: yes

    Payment Terms: T/T

    化学名称:

    L-半胱氨酸

    INCI名称:

    半胱氨酸

    英文名称:

    CYSTEINE

    CAS号:

    52-90-4

    HS编码

    2930901000

    化学式:

    C3H7NO2S

    分子量:

    121.16

    中文别名:

    L-半胱氨酸;

    L-2-氨基-3-巯基丙酸;

    半胱氨酸;

    (R)-2-氨基-3-巯基丙酸

    英文别名:

    L-Cysteine;

    Cysteine, L- (8CI);

    (R)-2-Amino-3-mercaptopropanoic acid;

    (R)-Cysteine;

    2-Amino-3-mercaptopropionic acid;

    Cystein;

    Cysteine;

    Half-cystine;

    L-(+)-Cysteine;

    L-Alanine, 3-mercapto-;

    L-Cys;

    Propanoic acid, 2-amino-3-mercapto-, (R)-;

    Thioserine;

    β-Mercaptoalanine

    指    标

    Specification

    标  准

    Standard

    外观 Appearance

    白色或类白色结晶性粉末White or almost white crystalline powder

    溶液外观

    Appearance of the Solution

    透明无色至浅黄色Transparent colorless to light yellow

    pH值 pH value

    4.7~5.7

    比旋度 Specification Rotation

    +8.0°~+10.09°

    干燥失重 Loss on Drying

    ≤0.5%

    灼烧残渣 Residue on Ignition

    ≤0.1%

    氯化物Chloride

    ≤0.4%

    硫酸盐sulfate

    ≤0.03%

    重金属(铅) Heavy metal(Lead)

    ≤10 ppm

    铁盐 Ironic Salt

    ≤10ppm

    含量 Assay(drying basis)

    98.5~101.5%

    微生物检测 Microbial Test

    总菌数 Total Aerobic

    ≤1000cfu/g

    霉菌和酵母 Yeast & Mold

    ≤100cfu/g

    大肠杆菌 E.coli

    不得检出/g

    Negative/g

    沙门氏菌 Salmonella

    不得检出/g

    Negative/g

    Package: In 25Kg net per fiber drum, inner polythene bags. We can provide the packing as per your request.

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