L-Cysteine

L-Cysteine

Chemical Name:L(-)-3,3'-Dithiobis(2-aminopropanoic acid)
Molecular Formula:C6H12N2O4S2
Molecular Weight:240.29
Cas No: [56-89-3]
Appearance:a colorless or white crystalline substance of hexagon, or crystalline powder, easily soluble in acid and alkali, insoluble in water and organic solvents such as alcohol, ethyl ether
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Product Details

L-Cystine is one of the important products the amino acid series. It is widely used in medical, chemical and food industries.   

Cystine promotes oxide and reductive ability of human cell, increases white blood cell, cures the infections diseases such as asthma, never ache, eczema. It is a good drug for prevention of skin old and feeble, cirrhosis and other liver diseases.

Chemical Name:

L(-)-3,3'-Dithiobis(2-aminopropanoic acid)

Structure Formula:

 

Molecular Formula:

C6H12N2O4S2

Molecular Weight:

240.29

Cas No:

[56-89-3]

Characteristics:

a colorless or white crystalline substance of hexagon, or crystalline powder, easily soluble in acid and alkali, insoluble in water and organic solvents such as alcohol, ethyl ether

Quality Standards:

AJI97


L-Cystine

Item

Specifications (AJI97 )

Appearance

White crystal or crystalline powder; tasteless

Assay, % 98.5~101.0

Specific rotation

-218°~ -224°

Loss on drying, %

≤0.2

Transmittance, %

≥98.0

Chloride (as Cl), %

≤0.02

Sulfate (as SO4), %

≤0.02

Ammonium as (as NH4), %

≤0.02

Iron (as Fe), %

≤0.001

Heavy Metals (as Pb), %

≤0.001

Arsenic (as As), %

≤0.0001

pH Value

5.0~6.5

Residue on ignition, %

≤0.1

Other amino acid

Conforms

The Characteristics and Uses:

  L-Cystine is one of the important products the amino acid series. It is widely used in medical, chemical and food industries.   
  Cystine promotes oxide and reductive ability of human cell, increases white blood cell, cures the infections diseases such as asthma, never ache, eczema. It is a good drug for prevention of skin old and feeble, cirrhosis and other liver diseases.

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.


FAQ

Q1:Is there any discount?

A:Yes,for larger quantity,we always support with better price.

Q2:How to place order and make payment?

A:You can send our your Purchase order(if your company has),or just send a simple confirmation by email or by Trade Manager,and we will send you Proforma Invoice with our bank details for your confirmation,then you can make payment accordingly.

Q3:How does your factory control quality?

All the raw material purchasing and production quality control are strictly following the ISO9001: 2008 management system. Besides, the full-featured detection equipment and GMP quality management system to provide the strongest guarantee for high quality product. We can provide our customers the detailed test report for the quality evaluation before the sample.



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