Chemical Name: L-Cysteine hydrochloride monoh ydrate
Structure Formula: . H20
Molecular Formula: C3H7NO2S. HCl. H2O
Molecular Weight: 175.64
CAS No: [7048-04-6]
Characteristics: White crystals or crystalline powder; Strongly acid taste.
Quality Standards: USP28, AJI92.
Packaging and Storage: In 25kgs f iber drum double polyethylene bags inside; Preserve in well-closed containers, at controlled room temperature.
Recommended limit: 1 year.
Item
|
Specifications
|
USP28
|
AJI92
|
Appearance
|
White crystals or crystalline powder; strongly acid taste.
|
Identification
|
Infrared Absorption
|
---
|
Specific optical rotation
|
+5.6 ° - +8.9 °
|
+5.5 ° - +7.0 °
|
State of solution (Transmittance)
|
---
|
≥ 98.0% clear and colorless
|
Chloride (Cl)
|
---
|
19.89-20.29%
|
Ammonium(NH4)
|
---
|
≤ 0.002%
|
Sulfate
|
≤ 0.03 %
|
≤ 0.020%
|
Iron
|
≤ 0.003 %
|
10ppm
|
Heavy Metals (as Pb),
|
≤ 0.00 15%
|
≤ 10ppm
|
Arsenic (as As),
|
---
|
≤ 1ppm
|
Other amino acids
|
---
|
Not detected
|
Organic volatile impurities
|
Meets the requirement
|
---
|
Loss on drying,
|
8-12 %
|
8.5-12 %
|
Residue on ignition,
|
c
|
≤ 0.1 0 %
|
Assay
|
98.5-101.5 %
|
9 9.0-10 0.5 %
|
pH value
|
---
|
1.5-2.0
|
Organic volatile impurities
|
Meets the requirement
|
---
|
Chromatographic purity
|
0.5% max Individual impurity, 2% max total
|
---
|
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
