Cysteamine HCL/Pharmaceutical Grade | high Purity/ COAS 156-57-0

Cysteamine Hydrochloride
Properties
Melting point: 67‑71 °C
Boiling point: 238.5℃ (at 101325 Pa)
Density: 0.75
Vapor pressure: 5.333 Pa at 25℃
Refractive index: 1.6100 (estimate)
Storage condition: 2‑8°C
Solubility: H₂O: 1 M at 20 °C, clear, colorless
Form: Crystalline powder or granules
Color: White
pH Value: 3.3‑5.0 (400g/L, H₂O, 20℃)
Biological source: synthetic (organic)
Water solubility: VERY SOLUBLE
Sensitivity: Hygroscopic
λmax: λ: 280 nm Amax: ≤0.3
Merck: 14,2779
BRN: 3590083
Stability: Stable, but hygroscopic. Incompatible with strong oxidizing agents.
InChI: 1S/C2H7NS.ClH/c3‑1‑2‑4;/h4H,1‑3H2;1H
InChIKey: OGMADIBCHLQMIP‑UHFFFAOYSA‑N
SMILES: Cl[H].NCCS
LogP: -2.14 at 25℃
CAS DataBase Reference: 156‑57‑0
EPA Substance Information: Cysteamine hydrochloride (156‑57‑0)
Absorption: cut‑off at 270nm in H₂O at 1M
Uses & Synthetic Methods
Uses
Used in food industry as acidulant, color retention agent, preservative and emulsifying stabilizer for egg yolk and other products; also applied in pharmaceutical field.
When appropriately added into feed, it can deplete somatostatin, regulate animal growth axis, boost growth‑hormone secretion, and enhance metabolism of energy, protein, calcium and phosphorus, so as to promote animal growth. It can also improve feed conversion rate, lean meat percentage and carcass quality.
Serves as intermediate for cimetidine and ranitidine. It acts as biochemical reagent and complexing agent for heavy‑metal ions.
As an aminothiol compound, it can reduce disulfide molecules such as cystine to cysteine. It is widely used in applications including gene expression regulation, somatostatin depletion and nanoparticle coating. It is applied for volumetric titration of cobalt, nickel, copper, zinc, cadmium and mercury.
Applied in biochemical research. Used as antioxidant.
Chemical Properties
White crystalline substance with special odor; hygroscopic, freely soluble in water and ethanol; light‑sensitive. Its aqueous solution is easily oxidized to cystamine and precipitation may occur. Melting point:71℃.
Production Method
Prepared from 2‑aminoethanol via bromination with hydrobromic acid, cyclization reaction with sulfuric acid and carbon disulfide, followed by hydrochloric acid hydrolysis.
Safety Information
Hazard Symbols: Xn,Xi
Risk Codes: 22‑36/37/38
Safety Statements: 36/37/39‑26‑36
UN Number: UN 3335
WGK Germany: 3
RTECS No.: KJ0200000
F‑Code: 1‑3‑10‑13
TSCA: TSCA listed
HS Code: 29309070
Storage Class: 11‑Combustible solids
Hazard Classification:
Acute toxicity (Oral): Category 4
Eye irritation: Category 2
Skin sensitizer: Category 1
Specific target organ toxicity‑single exposure: Category 3
Toxicity: LD50 (oral, rabbit): 642 mg/kg