© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Product Name: Cystamine Dihydrochloride
Chemical Name: 2,2'-Dithiobis(ethylamine) dihydrochloride
Synonyms: 1,2-Ethanediamine, N,N'-dithio-; Cystamine dihydrochloride; Bis(2-aminoethyl) disulfide dihydrochloride
CAS Number: 56-17-7
EC Number: 200-260-0
Recommended Use: Biochemical research, cross-linking agent, pharmaceutical intermediate
Supplier: Chemical manufacturing or laboratory supply companies
Contact Information: Provided on supplier label or website
Emergency Phone Number: As displayed on product label and company communications
Classification: Harmful if swallowed or inhaled, skin and eye irritant
GHS Label Elements: Warning symbol (exclamation mark), Signal word: Warning
Hazard Statements: H302: Harmful if swallowed; H332: Harmful if inhaled; H315: Causes skin irritation; H319: Causes serious eye irritation
Precautionary Statements: Wash hands thoroughly after handling, Avoid breathing dust, fumes, or vapors, Wear protective gloves and eye protection, Use only outdoors or in well-ventilated area
Potential Health Effects: Eye contact may cause redness and pain; skin contact can lead to irritation; inhalation of dust causes respiratory tract discomfort; ingestion may result in nausea or vomiting, central nervous system symptoms possible in severe cases
Environmental Hazards: Not expected to cause long-term adverse effects in the aquatic environment in typical laboratory use but still release to environment should be minimized
Chemical Identity: Cystamine Dihydrochloride
CAS Number: 56-17-7
EC Number: 200-260-0
Purity: Greater than 98% (typically found in laboratory-grade chemicals)
Formula: C4H14Cl2N2S2
Molecular Weight: 223.21 g/mol
Impurities: No major hazardous impurities specified in standard laboratory supply; for specific batches, refer to the supplier certificate of analysis
Inhalation: Move individual to fresh air, keep person at rest in a position comfortable for breathing, seek medical attention if symptoms develop
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water, wash thoroughly with soap and water, seek medical advice if irritation persists
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing, obtain medical advice if irritation continues
Ingestion: Rinse mouth with water, do not induce vomiting, seek medical attention immediately, give water to drink if person is fully conscious
Most Important Symptoms: May include irritation to affected area, nausea, or drowsiness if large amounts are ingested
Advice for Medical Responders: Treat supportive and symptomatically, provide oxygen if breathing is difficult
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide
Specific Hazards: Combustion may produce irritating or toxic gases including ammonia, nitrogen oxides, sulfur oxides, hydrochloric acid vapors
Protective Equipment for Firefighters: Wear self-contained breathing apparatus and full protective gear to prevent contact with skin and eyes
Fire Fighting Instructions: Approach fire from upwind to avoid hazardous vapors and decomposition products, cool exposed containers with water spray
Personal Precautions: Evacuate area, use personal protective equipment including gloves, goggles, and laboratory coat, avoid dust formation
Environmental Precautions: Prevent further leakage or spillage, avoid entering drains or water courses, notify authorities if substantial release occurred
Methods for Clean-Up: Sweep up or vacuum material, place in suitable, labeled containers for disposal, ventilate area, wash spill site with water after material pick-up is complete
Handling: Work in a well-ventilated area, avoid dust generation, minimize direct contact with substance, wash hands after handling, avoid eating or drinking in workplace
Storage: Store in tightly closed container, keep in a cool, dry, well-ventilated location, keep away from incompatible materials such as strong oxidants and acids, protect from light and moisture, label all storage containers clearly
Occupational Exposure Limits: No specific OSHA or ACGIH exposure limit established; treat as potentially hazardous substance
Engineering Controls: Use local exhaust ventilation, fume hood, or process enclosure where dust is generated, maintain eyewash stations and safety showers nearby
Personal Protective Equipment: Protective gloves rated for chemicals, safety goggles or face shield, lab coat or coveralls, NIOSH approved respirator recommended if dust or aerosols form
General Hygiene Practices: Remove contaminated clothing and wash before reuse, avoid using contact lenses without proper eye protection
Appearance: White crystalline powder
Odor: Odorless or faint amine odor
pH (5% Solution): 4-6
Boiling Point: Decomposes before boiling
Melting Point: 220-230°C (decomposition occurs)
Solubility: Soluble in water
Vapor Pressure: Negligible at room temperature
Relative Density: 1.45 g/cm³ (approximate)
Partition Coefficient (n-octanol/water): No data available
Flash Point: Not flammable under typical conditions
Auto-ignition Temperature: No data available
Evaporation Rate: Not expected to be significant
Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: Excessive heat, moisture, direct sunlight; avoid dust generation
Incompatible Materials: Strong oxidizing agents, strong acids, bases
Hazardous Decomposition Products: Hydrogen chloride, sulfur oxides, nitrogen oxides, ammonia, and carbon monoxide may form in fire or on decomposition
Polymerization: Will not occur under normal conditions
Acute Toxicity: Oral LD50 (rat): 910 mg/kg; inhalation effects studied in animals show irritation; skin and eye irritation observed in standard animal tests
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Immediate Effects: Respiratory tract and mucous membrane irritation, possible central nervous system effects if large doses involved
Delayed/Chronic Effects: Prolonged or repeated contact may cause dermatitis or eczema, data on mutagenicity and carcinogenicity is insufficient
Sensitization: Cases of allergic skin reaction reported with similar compounds
Other Data: Not listed by NTP, IARC, or OSHA as a known carcinogen
Ecotoxicity: Expected to be of low toxicity to aquatic organisms, no acute toxicity data available for fish; at high concentrations, could contribute to nutrient loading
Persistence and Degradability: Not readily biodegradable; may persist in aquatic or soil environments
Bioaccumulative Potential: Low potential based on molecular structure but no measured BCF data available
Mobility in Soil: Soluble in water, may migrate through soil to groundwater in cases of significant spill
Other Adverse Effects: Avoid release into waterways to prevent local contamination
Disposal Methods: Place contaminated material into containers approved for chemical waste, incinerate at approved facility or dispose of using local or national hazardous waste regulations
Handling of Empty Containers: Empty packaging or containers may retain residues, handle as hazardous material, do not re-use without proper cleaning
Environmental Precautions: Do not discharge into drains, soil, or watercourses; notify environmental authorities if accidental discharge occurs
UN Number: Not classified under United Nations transport regulations for dangerous goods
Transport Hazard Class: Not regulated as a hazardous material by US DOT, ADR, IATA, or IMDG
Packing Group: Not applicable
Labeling Requirements: Standard chemical label with hazard pictograms, ensure packaging prevents leaks or dust
Special Precautions: Secure packaging, protect from moisture, keep away from incompatible materials in transit
TSCA Status: Listed on US Toxic Substances Control Act Inventory
REACH Status: Registered or pre-registered under European REACH regulations
SARA Title III (Sections 302/313): Not listed as an extremely hazardous substance
California Proposition 65: Not listed as causing cancer, birth defects, or reproductive harm
Workplace Classification: Handle as hazardous chemical based on potential for skin, eye, or respiratory tract irritation
WHMIS Classification (Canada): D2B (Toxic Material Causing Other Toxic Effects)
Other Local Requirements: Follow all applicable federal, state/province, and local regulations for handling hazardous substances, keep hazard communication program up to date in workplace
