© 2026 Nanjing Finechem Holdings Co., Ltd,
All Right Reserved
Product Name: 1,1,1-Trichloroethane
Chemical Formula: C2H3Cl3
Synonyms: Methyl chloroform, 1,1,1-TCA
CAS Number: 71-55-6
Recommended Use: Solvent, cleaning agent, degreaser
Supplier Details: Names and addresses from distributors or producers based in the region
Emergency Contact: 24-hour emergency information from regional poison control
Classification: Carcinogenic potential, eye and respiratory irritant, category for skin and eye irritation as specified by relevant standards
Signal Word: Warning
Hazard Statements: May cause skin and eye irritation; vapors can affect the central nervous system; depressant to respiratory system; may cause dizziness, headache, or nausea upon inhalation; long-term exposure shows possible links to liver and kidney effects
Pictograms: Exclamation mark, health hazard
Precautionary Statements: Keep away from open flame or heat sources; use with proper ventilation; avoid skin and eye contact; do not dispose in drains or surface water
Hazards Not Otherwise Classified: Repeated exposure can worsen health symptoms; may displace air and cause suffocation indoors
1,1,1-Trichloroethane: Concentration up to 99%
Other Stabilizers: Minor amounts (<1%) of epoxidized soybean oil, nitromethane as added for product stability, varies by manufacturer
Impurities: Less than 0.5% total impurities, may include 1,1-dichloroethene or other chlorinated byproducts depending on production method
Inhalation: Move person outside or to area with fresh air; keep warm and at rest; seek medical attention for unusual symptoms or long exposure
Skin Contact: Remove contaminated clothing; gently wash skin with soap and plenty of water; medical attention for irritations or persistent symptoms
Eye Contact: Rinse thoroughly with running water for at least 15 minutes; hold eyelids open; contact a healthcare provider if pain or redness remains
Ingestion: Rinse mouth out; do not induce vomiting; consult a physician or poison center immediately; avoid giving anything by mouth if victim is drowsy
Note to Physicians: Keep airways open; monitor for respiratory depression; symptomatic and supportive care as required
Suitable Extinguishing Media: Carbon dioxide, dry chemical powder, water spray for cooling containers
Unsuitable Media: Full water jets
Specific Hazards: Decomposes under excessive heat to hydrogen chloride, phosgene, and chlorine gases which are hazardous; containers may explode if heated
Special Protective Equipment for Firefighters: Full protective clothing with self-contained breathing apparatus (SCBA); avoid inhaling fumes
Precautions: Approach from upwind; cool exposed containers with water spray; evacuate vicinity if large amounts involved in fire
Personal Precautions: Use chemical-resistant gloves and protective clothing; evacuate poorly ventilated areas; keep unnecessary personnel away
Environmental Precautions: Prevent via diking or containment from entering sewers, drains, or water sources; notify authorities for significant spills
Spill Cleanup Methods: Ventilate area; collect for disposal by absorbing in sand, earth, or non-flammable material; transfer to labeled waste container
Decontamination: Wash spill site after cleanup, even if small quantities released
Disposal of Contaminated Material: Place in secure containers for approved disposal
Precautions for Safe Handling: Limit personal exposure using closed systems or local exhaust; avoid inhaling vapors; wash up after handling before eating
Storage Requirements: Store in tightly closed containers in a cool, dry, well-ventilated location; protect from direct sunlight and away from incompatible substances such as strong oxidizers or alkali metals
Incompatibles: Reactive metals (aluminum, magnesium, potassium), alkalis, strong oxidizers
Special Storage: Use containers lined with compatible material; isolate from food and feedstuffs
Technical Requirements: Electrical equipment in storage area should be explosion-proof
Occupational Exposure Limits: OSHA PEL: 350 ppm (1900 mg/m³) TWA; ACGIH TLV: 350 ppm
Engineering Controls: Use mechanical exhaust or process enclosures; maintain air concentrations below regulated limits
Respiratory Protection: If ventilation inadequate, use approved air-purifying or supplied-air respirators
Skin Protection: Butyl rubber or polyvinyl alcohol gloves, long-sleeved chemical-resistant apparel
Eye and Face Protection: Chemical safety goggles; face shield where splash risk exists
Hygiene: No eating, drinking, or smoking during use; wash after handling
Physical State: Liquid
Color: Colorless
Odor: Sweet, chloroform-like
Melting Point: -35°C
Boiling Point: 74°C
Flash Point: Not flammable under normal conditions
Vapor Pressure: 124 mmHg at 20°C
Density: 1.34 g/cm³
Solubility: Insoluble in water but miscible with most organic solvents
Evaporation Rate: 15 (Butyl Acetate = 1)
Partition Coefficient (n-octanol/water): 2.49 (log Pow)
Stability: Chemically stable under ordinary conditions; prolonged exposure to sunlight or heat can accelerate breakdown
Reactiveness: Contact with reactive metals, alkali, or heat generates hazardous gases; forms toxic gases on contact with open flames
Polymerization: Hazardous polymerization does not occur
Decomposition Products: Hydrogen chloride, phosgene, carbon monoxide, chlorine
Routes of Exposure: Inhalation, oral, dermal, ocular
Acute Toxicity: LC50 (rat, inhalation): 14,400 ppm/4h; LD50 (rat, oral): 10,200 mg/kg
Symptoms: CNS depression, dizziness, nausea, headache, loss of consciousness in high concentrations, skin and eye irritation
Chronic Effects: Animal studies show possible liver or kidney impairment upon long-term exposure; human epidemiological data points to neurobehavioral changes
Sensitization: Not classified as a respiratory or skin sensitizer
Carcinogenicity: Agent not listed as carcinogen by OSHA, NTP, or IARC but concerns exist with heavy and prolonged occupational exposure
Other Health Effects: Depression of cardiac function possible at high vapor concentrations
Persistence: Persists in groundwater for extended periods; slow natural degradation
Bioaccumulation Potential: Moderate potential, especially in aquatic organisms over long exposure
Ecotoxicity: LC50 (fish, 96h): 40 mg/L; toxic to aquatic life at high concentrations
Mobility: Mobile in the environment, volatile to the atmosphere
Degradation: Degrades in air through reaction with photochemical agents, breakdown slower in soil or water
Environmental Hazards: Ozone depletion potential recognized, banned or restricted in several jurisdictions
Waste Handling: Gather liquid and residues in sealed containers for disposal by incineration at licensed facility
Disposal Restrictions: Do not pour into drains or the local environment
Contaminated Packaging: Triple rinse containers, puncture and dispose of via hazardous waste facility
Legal Disposal Requirements: Follow regional, national, and local regulations; check current listings for hazardous waste coding
UN Number: UN2831
Proper Shipping Name: 1,1,1-Trichloroethane
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: III
Label: Toxic (skull and crossbones), Environmentally Hazardous
Marine Pollutant: Yes
Special Precautions: Keep containers upright and tightly sealed; stow away from incompatible materials and living quarters
U.S. Federal Regulations: Listed under TSCA, subject to Section 313 SARA Title III for reporting, CERCLA hazardous substance, RCRA hazardous waste
Canada: Included under WHMIS requirements; subject to Environmental Protection Act restrictions
EU: Classified under Regulation (EC) No 1272/2008 (CLP); subject to REACH registration as a phase-out chemical
International: Listed in the Rotterdam Convention as hazardous for international trade; phase-out required under Montreal Protocol due to ozone depletion
Label Elements: Clear hazard and precautionary statements and pictograms required on all containers
