Product Name: Dimethylamine
Chemical Formula: C2H7N
Synonyms: Dimethylamine gas, DMA
CAS Number: 124-40-3
Molecular Weight: 45.08 g/mol
Recommended Use: Chemical synthesis, water treatment, rubber processing
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Classification: Flammable gas, Toxic if inhaled, Corrosive to skin and eyes
Hazard Statements: Highly flammable, causes severe burns, toxic by inhalation
Pictograms: Flame, toxic, corrosive symbols
Signal Word: Danger
Main Symptoms: Eye and skin burns, respiratory irritation, headache, nausea
Precautionary Statements: Avoid inhalation, avoid skin and eye contact, keep away from open flames and heat, use with ventilation
Chemical Identity: Dimethylamine
Concentration: 99 – 100 %
Impurities: Trace water (< 0.3%), often listed for industrial grades
Ingredient Name: Dimethylamine
CAS Number: 124-40-3
Inhalation: Move person to fresh air, seek medical attention if symptoms develop, give artificial respiration if needed
Skin Contact: Remove contaminated clothing, wash skin with large amounts of water, do not delay rinsing, seek medical help
Eye Contact: Rinse eyes with water for at least 15 minutes, keep eyelids open, remove contacts if possible, seek immediate medical care
Ingestion: Do not induce vomiting, rinse mouth with water, immediately seek medical attention
Important Notes: Symptoms may be delayed, always consult a physician after exposure, provide safety data to healthcare providers
Suitable Extinguishing Media: Water fog, dry chemical, foam, carbon dioxide
Specific Hazards: Releases toxic fumes of nitrogen oxides on combustion, rapid pressure buildup may occur in closed containers
Protective Equipment: Self-contained breathing apparatus, full protective gear
Advice for Firefighters: Avoid inhaling vapors and fumes, keep a safe distance, cool containers with water spray
Explosion Data: Vapors may form explosive mixtures with air, flash point extremely low (–17°C), wide explosion limits
Personal Precautions: Evacuate unprotected personnel, ventilate area well, use appropriate respiratory protection
Environmental Precautions: Prevent spillage from entering drains, surface water, or soil, report to authorities if major spill occurs
Cleanup Methods: Stop leak if safe, use water spray to reduce vapors, absorb with non-flammable material, keep away from ignitable sources
Special Instructions: Use only trained personnel for spill response, dispose materials in accordance with regulations, isolate area
Safe Handling: Handle in well-ventilated place, use non-sparking tools, keep away from ignition sources, avoid inhalation and direct contact
Storage Requirements: Store in tightly closed containers, keep in cool, dry place, separate from strong acids, oxidizers, copper alloys
Other Practices: Post warning signs, regularly check storage containers for leaks, keep fire extinguishers nearby, use explosion-proof electrical gear
Exposure Limits: ACGIH TLV: 5 ppm (8 hr TWA), OSHA PEL: 10 ppm (8 hr TWA)
Engineering Controls: Local exhaust ventilation, gas detectors, emergency eye wash stations
Personal Protection: Chemical-resistant gloves, safety goggles, face shields, flame-resistant work clothing, approved respirators if ventilation insufficient
Hygiene Measures: Wash hands before eating or after handling, remove contaminated clothing and wash before reuse, do not eat or drink near product
Appearance: Colorless gas, strong ammonia-like odor
Odor Threshold: Very low (about 0.02 ppm)
pH (aqueous solution): Strongly basic
Boiling Point: 6.9°C
Melting Point: –92°C
Flash Point: –17°C (closed cup)
Auto-ignition Temperature: 430°C
Explosion Limits: 2.8 – 14.4 % (volume in air)
Vapor Pressure: 2.2 atm at 20°C
Solubility: Very soluble in water, also soluble in alcohol and ether
Relative Density: 0.676 (water = 1)
Vapor Density: 1.6 (air = 1)
Chemical Stability: Stable under ordinary conditions, reacts vigorously with acids, halogens, strong oxidizers
Reactivity: Violent exothermic reactions possible with strong acids or hypochlorites, forms explosive mixtures with air
Hazardous Decomposition: Releases nitrogen oxides, carbon oxides, ammonia on combustion
Conditions to Avoid: Heat, sparks, open flame, static discharge, incompatible materials like copper or acids
Incompatible Materials: Acids, strong oxidizers, halogenated compounds, copper and its alloys
Acute Toxicity: LC50 (rat, inhalation): 14,800 ppm (4 hours); LD50 (oral, rat): 698 mg/kg
Routes of Exposure: Inhalation, skin, eyes, ingestion
Chronic Effects: Prolonged exposure may cause chronic respiratory problems or dermatitis
Symptoms: Burns, coughing, headache, nausea, breathing difficulty
Carcinogenicity: Not classified by IARC, ACGIH, or NTP as carcinogenic
Other Data: May aggravate existing respiratory or skin conditions
Aquatic Toxicity: Harmful to aquatic organisms at high concentrations
Persistence and Degradability: Biodegradable under aerobic conditions
Bioaccumulation Potential: Low bioaccumulation potential
Mobility: Moves rapidly in soil and groundwater, highly soluble
Other Environmental Hazards: High concentrations raise water pH, can disrupt aquatic life, avoid discharge to environment
Waste Disposal Methods: Dispose in accordance with local, regional, and national regulations, neutralize before discharge if permitted
Container Handling: Triple rinse containers, puncture before landfill, return for reuse or recycling if possible
Special Precautions: Do not directly release to sewers or natural waters, consult hazardous waste facility
UN Number: UN 1032
UN Proper Shipping Name: Dimethylamine, compressed
Transport Hazard Class: 2.1 (Flammable gas)
Packing Group: Not applicable (gases)
Hazard Label: Flammable gas
Special Transport Precautions: Use approved containers, label correctly, ground during loading/unloading, do not transport with oxidizers or acids
Regulatory Transport Data: Follows requirements for hazardous gases under ADR, DOT, IMDG, IATA
OSHA: Classified hazardous under OSHA Hazard Communication Standard
TSCA: Listed in U.S. Toxic Substances Control Act Inventory
SARA Title III: Reportable under SARA 302 (Extremely Hazardous Substances), thresholds apply
EPCRA: Requires emergency planning notification
CERCLA: Reportable quantity: 100 lbs (45.4 kg)
WHMIS (Canada): Class B1 (Flammable), D1B (Toxic), E (Corrosive)
Other International: Listed on EU EINECS/ELINCS, regulated as dangerous good by European and UN classifications
