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Welcome to Hebei Huaheng Biological Technology Co., Ltd!
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Hebei Huaheng Biological Technology Co., Ltd
Address: No.777 Xinghua South Street,Jizhou City,Hebei Pro.,China Postal Code: 053200
Postal Code: 053200
TEL:0318-8628255
FAX:0318-8628286
E-mail:jizhouhuaheng@163.com
Web site:m.xdhedu.cn/en
Current position Products > Amino Acid > L-Cystine
L-Cystine



Chemical Name

(+)-2-Amino-3-mercaptopropionic acid

Structure Formula

Molecular Formula

C3H7NO2S

Molecular Weight

121.15

Cas No

[52-90-4]

Characteristics

White crystalline powder; tasteless, easily soluble in water but insoluble in alcohol and ether

Quality Standards

AJI97

Item

Specifications (AJI97 )

Appearance

White crystalline powder

Assay, %98.0~101.0

Specific rotation

+8.3<~+9.5<

Loss on drying, %

0.5

Transmittance, % 

95.0

Chloride (as Cl), %

0.04

Sulfate (as SO4), %

0.03

Ammonium as (as NH4), %

0.02

Iron (as Fe), %

 +0.001

Heavy Metals (as Pb), %

 +0.001

Arsenic (as As), %

  +0.0001

pH Value

   4.5~5.5

Residue on ignition, %

0.1

Other amino acid

   No detd


 

Package and Transport

   This product is contained in a double-layer package, the inner layer being a sealed nonpoisonous polyethylene bag or alumin, and the outer layer being a paper board barrel. Each barrel contains a net weight of 25kg. Packages may be arranged in accordance with customer¨s requirements.       

        Handle with care. Protect the product from sunshine or rain. Do not transport them together with poisonous or harmful goods. This product belongs to the non-dangerous category and can be transported as a general chemical product.

Storage

    Stored in dry, clean and ventilated places. In order to avoid pollution, it is prohibited to place this product together with poisonous or harmful substances. The expiry date is for two years.  




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Address: No.777 Xinghua South Street,Jizhou City,Hebei Pro.,China Postal Code: 053200
TEL:0318-8628255
FAX:0318-8628286
E-mail:jizhouhuaheng@163.com
Web site:http://m.xdhedu.cn

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