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Chemical name: Dimethyl Ether
Chemical formula: C2H6O
Synonyms: Methoxymethane, wood ether
Typical use: Propellant in aerosols, refrigerants, fuel, and chemical industry feedstock
Appearance: Colorless gas with a faintly sweet odor, hard to miss in confined spaces
CAS number: 115-10-6
Primary hazards: Extremely flammable gas, forms explosive mixtures with air
Health concerns: Inhalation brings dizziness, shortness of breath, narcosis at high levels
Environmental concerns: Vapor is heavier than air, collects in low spots and enclosed areas
Physical hazards: Cylinders may rupture when heated, risk of fireball if released near sparks or flames
Ingredient: Dimethyl Ether
Concentration: 100% pure, often sold or used without additives
Impurities: Potential for minor water or methanol traces if manufactured with less control
Exposure routes: Inhalation stands out, skin contact possible if stored as a compressed liquid
Inhalation: Move outside for fresh air, monitor for shallow breathing; if struggling, oxygen support or emergency services may be needed
Skin contact: Gas itself rarely causes harm, but compressed liquid causes frostbite; rinse with lukewarm water, remove contaminated clothing
Eye contact: Hold eyelids open, irrigate gently with water for several minutes
Ingestion: Unlikely given its gaseous nature, but inhaling high amounts can mean immediate medical attention
Suitable extinguishing media: Dry chemical, CO2, water fog
Unsuitable media: Direct water jet may spread the fire
Hazardous combustion products: Carbon monoxide and carbon dioxide
Precautions for firefighters: Approach from upwind, wear self-contained breathing apparatus; keep cylinders cool with water spray if exposed to fire, evacuate area if venting or leaks escalate
Personal precautions: Evacuate unprotected people, restrict access, ventilate area
Environmental precautions: Prevent gas from entering sewers or basements, avoid ignition sources
Containment/cleanup: Let gas disperse with ventilation, monitor for explosive atmosphere, use only non-sparking tools during remediation
Handling: Zero open flames, no smoking near transfer or storage, earth all equipment, avoid inhalation and direct skin contact
Storage: Cool, dry, well-ventilated spot, away from oxidizers or direct sunlight, cylinders upright, pressure relief devices unobstructed
Exposure limits: Many countries set workplace exposure limits (example: US ACGIH TLV 1000 ppm)
Engineering controls: Local exhaust ventilation, explosion-proof equipment, leak detection recommended
Personal protection: Chemical-resistant gloves, eye protection, respiratory protection if ventilation fails, antistatic workwear for transfer/storage tasks
Boiling point: -24.8°C
Melting point: -141°C
Flash point: -41°C
Auto-ignition temperature: 235°C
Vapor pressure: High at room temperature
Density: Gas is heavier than air
Solubility: Somewhat soluble in water; dissolves well in organic solvents
Odor: Sweet, ether-like
Color: Colorless
Chemical stability: Stable under recommended storage; rapid evaporation if released
Reactive with: Oxidizing agents, acids
Hazardous reactions: Can form explosive mixtures with air, violent reaction with chlorine compounds
Decomposition products: Carbon monoxide and carbon dioxide in fire
Conditions to avoid: Heat, sparks, flames, lack of ventilation
Acute effects: Excess inhalation can depress central nervous system, symptoms may include headache, drowsiness, confusion
Long-term exposure: Chronic effects in humans not well established, animal studies suggest repeated exposure brings similar CNS problems
Sensitization: No known skin or respiratory sensitizer
Carcinogenicity: Not listed as a human carcinogen by IARC, NTP, or OSHA
Mobility in environment: Rapid evaporation, dispersion in air
Aquatic toxicity: Low direct toxicity, breaks down in water and air
Bioaccumulation: Doesn't persist in soil or organisms
Environmental impacts: Not classified as a marine pollutant, but large uncontrolled releases may displace oxygen in confined areas affecting aquatic life indirectly
Waste disposal: Controlled burning in a properly designed incinerator, ensure complete combustion to avoid carbon monoxide
Container management: Empty cylinders must be depressurized and disposed of following local rules
Environmental care: Avoid venting large volumes to atmosphere, minimize fugitive releases during transfer
Shipping name: Dimethyl Ether
Hazard class: Flammable gas
Packing group: Not assigned, gas under pressure
Label: Flammable Gas label required
Transport precautions: Secure cylinders upright, keep away from sources of ignition, comply with national and international transport regulations
Classification: Regulated as a hazardous material for storage and transport
Workplace exposure: Occupational limit in several jurisdictions, varies by country
Environmental regulation: Reporting required if accidental release exceeds local reporting thresholds, subject to safety programs under occupational and environmental agencies
Labelling: All containers require clear hazard communication following workplace safety standards
