Product Specifications
Product Description
Chemical Name: S-Carboxymethyl-L-Cysteine, Carbocistein
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
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.
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 %
|
Sinoway International (Jiangsu) Co., Ltd., (formerly named China National Chemical Construction Jiangsu Company), was listed 500 import and export enterprises classified by the State in 1998. Total export and import in 2007 is 250 million US Dollars. The main transaction includes import and export of ships/vessels, chemicals, pesticides and pharmaceuticals and relative technologies.
The organization of the company consists of General Manager's office, Vice General Managers' office, Import and Export Divisions, Accounting Division and Administration Division. And there is a well trained and efficient staff team with strong business advantages.
Our mission is to provide our customers with quality service. We follow the steady development guideline of safety and benefits first. And we promote business style of practicality, modesty and progressiveness.
All staffs from Sinoway International (Jiangsu) Co., Ltd are willing to serve friend from all works of life with sincerity.
Corporate officers:
President: Mr. Tao Jinzhao
General Manager: Mr. Chen Zhongyu
Vice General Manager: Mr Lu Shenxing
