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CARBOCISTEIN

Product Details:

Purity	99.9%
CAS No.	2387-59-9
Place of Origin	China

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Detailed Product Description

Product :CARBOCISTEIN
(S-Carboxymethyl-L-Cysteine)

Chemical Name: S-Carboxymethyl-L-Cysteine, Carbocistein
Structure Formula:

Molecular Formula: C₅H₉NO₄S
Molecular Weight: 179.1904
Cas No: [2387-59-9]
Characteristics: White crystals or crystalline powder . Slighytly acid tast. Very slightly soluble in water, practically insoluble in ethanol and in gracial acetic acid and in ether. Dissolves in dilute hydrochloric acid and in sodium hydroxide T.S.
Quality Standards: EP4, AJI92, BP98

Items	Specification (EP4)	Specification (AJI92)	Specification (BP98)
Description	White crystals or crystalline powder
Identification	Infrared absorption spectrum		A; B; C;
Specific rotation [a]_D^{20 °}	-3 2 .5 ° - -35.5 °	-33.5 ° - -36.5 °	-3 2 .5 ° - 35.5
State of solution (Transmittance)	Clear and colorless	≥ 98.0%	Clear and colorless
Chloride(Cl)	≤ 0. 15	≤ 0.04%	≤ 0. 15
Ammonium(NH₄)	- - - -	≤ 0.02%	- - - -
Sulfate(SO₄)	≤ 0. 03	≤ 0.0 2 %	≤ 0. 03
Iron(Fe)	- - - -	≤ 30PPm	- - - -
Heavy metals(Pb)	0.001%	≤ 10PPm	0.001%
Arsenic(As₂O₃)	- - - -	≤ 1PPm	- - - -
Other amino acids	- - - -	Conforms	- - - -
Loss on drying	≤ 0.5 %	≤ 0. 30 %	≤ 0.5 %
Residue on ignition (Sulfated)	≤ 0. 3 %	≤ 0. 1 %	≤ 0. 3 %
PH	2.0-3.0	2.0-3.5	2. 8-3.0
Assay	98. 5-10 1 .0%	98.5-101.0%	98.5-101.0%
L-cystine L-Cysteine	≤ 0.5 % ≤ 0.5 %	- - - -	Ninhydrin-positive substances: ≤ 0.5 %

Packaging and Storage: In 25kgs f iber drum double polyethylene bags inside; Preserve in well-closed containers, at controlled room temperature.
Recommended limit: 2 year.

Contact:

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Fax: 00 86 21 5168 6554
Email:peter(at)brightol.com

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