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Name: Anhydrous Trimethylamine
Chemical Formula: C3H9N
Physical Form: Colorless gas, strong ammonia-like odor
Common Uses: Organic synthesis, pesticides, pharmaceuticals
CAS Number: 75-50-3
Hazard Class: Flammable gas, toxic by inhalation
Main Risks: Highly flammable, forms explosive mixtures in air, irritating to skin, eyes, and respiratory tract
GHS Label: Danger – Flammable, Toxic
Symptoms: Breathing difficulty, coughing, burning sensation in exposed tissues
Chronic Exposure: Long-term contact can trigger asthma-like symptoms, chronic skin issues, or long-term respiratory irritation
Main Ingredient: Trimethylamine, purity often greater than 99%
Related Impurities: Possible trace water, methylamine or dimethylamine in commercial samples
Inhalation: Move to fresh air, seek medical attention quickly
Skin Contact: Rinse with large amounts of water, remove contaminated clothes
Eye Contact: Irrigate eyes with water for at least 15 minutes, get medical help
Ingestion: Unlikely due to gas form, but if exposed in solution, rinse mouth out, seek urgent care
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or alcohol-resistant foam
Fire Hazards: Rapidly forms flammable or explosive mixtures, combustion releases toxic nitrogen oxides
Protective Gear: Full bunker gear, self-contained breathing apparatus
Special Advice: Shut off gas supply if safe, stay upwind
Spill Response: Evacuate area, ventilate zone
Containment: Stop leak if possible, prevent vapor spread
Cleanup: Absorb liquid in inert media if in solution, ventilate gas
Environmental Protection: Stop leaks near drains or water sources, use secure containers for cleanup residue
Storage Requirements: Store in tightly closed, corrosion-resistant containers at well-ventilated, cool locations
Handling Practices: Avoid open flames, sources of ignition
Personal Hygiene: Wash hands thoroughly after handling, avoid all skin and eye contact
Special Precautions: Keep away from incompatible chemicals including oxidizers and acids, do not store in glass containers due to possible reaction
Engineering Controls: Local exhaust ventilation, explosion-proof equipment needed
Control Parameters: OSHA PEL: 10 ppm (8-hour), ACGIH TLV: 5 ppm TWA, STEL 15 ppm
Personal Protective Equipment: Chemical goggles, flame-resistant gloves, full-face respirator
Workplace Practices: Do not eat, drink, or smoke while handling, assure eyewash and safety showers are accessible
State: Gas at room temperature
Boiling Point: 2.9°C
Melting Point: −117°C
Solubility: Miscible with water, highly soluble in polar solvents
Vapor Pressure: High at ambient temperature
Odor Threshold: Distinct strong fishy-ammonia odor
Density: Lower than air, vapor tends to accumulate at low points
Chemical Stability: Stable under recommended storage
Reactive With: Strong oxidizers, acids, halogens
Hazardous Decomposition: Toxic nitrogen oxides on burning, releases explosive mixtures with air
Polymerization: No dangerous polymerization reported
Inhalation Toxicity: Breathing concentrations above exposure limits causes burning, pulmonary edema
Skin Effects: Direct contact destroys tissue, causes deep burns
Eye Effects: Vapors cause severe irritation, possibly blindness
Sensitization: Reports of respiratory or skin sensitization are rare but possible
Long-Term Health Risks: Repeated exposure may boost risk of chronic bronchitis, possible neurological symptoms, evidence remains limited for carcinogenicity
Aquatic Toxicity: Harmful to aquatic organisms due to high pH and ammonia-related toxicity
Persistence: Volatile, breaks down in air but persists without sunlight; in water, degrades via microbial action
Bioaccumulation: Low, compound doesn’t persist in organisms
Soil Mobility: Moves easily in water, raises risk of groundwater contamination if released
Waste Disposal: Neutralize solution before disposal, incinerate under controlled conditions
Regulatory Disposal: Follow local, national regulations specifically for hazardous gases
Container Handling: Pressure vessels need decontamination and purging before scrapping, cannot be reused for food or water
Transport Hazard Class: Flammable gas
UN Number: UN 1083
Packaging Methods: Approved high-pressure metal cylinders
Restrictions: Keep away from incompatible goods, transport with hazmat labeling
Workplace Standards: Included under OSHA Process Safety Management, controlled for occupational exposure
Environmental Regulation: Covered under Clean Air Act for toxic air pollutant emissions in the United States
Transport Laws: Subject to hazardous goods regulations in most jurisdictions; labeling, handling, and documentation required
