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L-CYSTINE

[Product Name]: L-CYSTINE
[Other Name]: L-CYSTINE ACID, DICYSTEINE, GELUCYSTINE
[Molecular Formula]: C6H12N2O4S2
[Structural Formula]: HOOCCH(NH2)CH2SSCH2CH(NH2)COOH
[Molecular Weight]: 240.30
[CAS]: 56-89-3
[EINECS]: 200-296-3
[E No]: 921
[Description]: white powder, odorless, tasteless, insoluble in water, alcohol, ether, acetone, soluble in HCl or NaOH solution.
[Standard]: Pharma Grade EP8, Food grade FCCV, or according to buyer's requirements.

Item
Pharma Grade (EP8)
Food Grade (FCCV)

Characters

White crystalline powder

White crystalline powder

Assay(on dry basis)

98.5~101.0%

98.5~101.5%

Appearance of solution

Pass test

--

Specific rotation

-218º~-224º

-215º~-225º

Ninhydrin positive substances

Any impurity: 0.2% MAX

--

Chloride

200ppm MAX

--

Sulphate

300ppm MAX

--

Ammonium

200ppm MAX

--

Iron

10ppm MAX

--

Heavy metals

10ppm MAX

--

Lead

--

5mg/kg MAX

Loss on drying

0.5% MAX

0.2% MAX

Sulphated ash

0.1% MAX

0.1% MAX


Usage: Generally used as a nutritional supplement.
Packing: In fiber drum 25KG net each.
Transport and storage: It is harmless material, handle with cares to avoid damaging the package, and protect them from sunshine or rain. Don抰 transport it with poisonous or harmful goods. Stored in room temperature.

Add: B-1303, NO. 310 CHANGJIANGDAO, SHIJIAZHUANG, 050035, CHINA. P.C.: 050035
Tel: +86-311-85296281 Fax: +86-311-85296280
E-MAIL: [email protected]  
HTTP:// www.dwxy9.com  


Copyright(C)2002, Shijiazhuang Shixing Amino Acid Co.,Ltd. All Rights Reserved.
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