Methane flash point

Several lower partially halogenated hydrocarbons (dichloromethane, bromo-methane, trichloroethylene, 1,1,1-trichloroethane) have no measurable flash point, but are nonetheless capable of forming flammable and explosive mixtures with air, and several such accidents are recorded. 

The flash point of methane is very low compared to gasoline, though it is hardly a practical consideration since it is very difficult to conceive of situations where pools of liquid methane would exist. 

DIPROPYL METHANE (142-82-5) CtH, Highly flammable liquid. Forms explosive mixture with air [explosion limits in air (vol %) 1 to 7.0 flash point 25°F/-4°C autoignition temp 433°F/223°C Fire Rating 3]. Violent reaction with strong oxidizers ... 

ETHER, VINYL ETHYL (109-92-2) C4HgO Highly flammable, polymerizable liquid. Forms explosive mixture with air [explosion limits in air (vol %) 1.7 to 28 flash point <-50°F/<-46°C autoignition tenqj 395°F/202°C Fire Rating 4]. Forms unstable peroxides on contact with air. Reacts violently with oxidizers, ammonium persulfate, bromine dioxide, methane sulfonic acid (may cause polymerization), nitric acid, perchlorates, permanganates, peroxides and hydroperoxides, sulfuric acid. Incompatible with acids, ammonia, aliphatic amines, alkanolamines. On small fires, use dry chemical powder (such as Purple-K-Powder), alcohol-resistant foam, or COj extinguishers. 

CHLOR-METHAN (German) (74-87-3) Flammable gas (flash point <32°F/<0°C). Moisture causes decomposition. Violent reaction with strong oxidizers, acetylene, anhydrous ammonia, amines, fluorine, interhalogens, magnesium, potassium, sodium, zinc, and their alloys. Reacts with barium, lithium, titanium. Contact with powdered aluminum or aluminum chloride forms pyrophoric trimethylaluminum may cause ignition or explosion. Attacks plastics, rubber, and coatings. 

CHLORO(CHLOROMETHOXY)METHANE (542-88-1) Forms explosive mixture with air (flash point <66°F/<19°C). Contact with water causes decomposition and the formation of hydrogen chloride. Forms unstable peroxides. Contact with oxidizers, peroxides, sunlight may form shock-sensitive compounds. Attacks many plastics, coatings. Flow or agitation of substance may generate electrostatic charges due to low conductivity. 

DLACETYL METHANE (123-54-6) Forms explosive mixture with air (flash point 93 F/34°C). May form unstable peroxides on prolonged storage in air may undergo explosive polymerization. Reacts violently with strong oxidizers. Incompatible with aliphatic amines, alkanolamines, organic acids, isocyanates. 

FURYL METHANAL (98-01-1) Forms explosive mixture with air (flash point 140°F/ 60°C). Strong acids or strong bases may cause polymerization. Violent reaction with strong acids, alkalis, sodium bicarbonate. Incompatible with ammonia, aliphatic amines, alkanol-amines, aromatic amines, oxidizers. Attacks many plastics and coatings. 

HENDECANOIC ACID (112-37-8) Combustible solid (flash point >230°F/> 110°C cc). Dust or powder forms explosive mixture with air. Violent reaction with strong oxidizers, alkalis. Incompatible with sulfuric acid, caustics, ammonia, aliphatic amines, alkanolamines, isocyanates, alkylene oxides, epichlorohydrin. Increases the explosive sensitivity of nitro-methane. Attacks many common metals. 

ISOCYANATE METHANE (624-83-9) Forms explosive mixture with air (flash point 0°F/- 18°C). Reacts slowly with water violently with warm water or steam, forming carbon dioxide and heat. Decomposes above 100°F/38°C. Violent reaction with acetaldehyde, amines, alcohols, acids, alkalis, strong oxidizers. Unless inhibited, can produce unstable peroxides contact with iron, tin, copper, or salts of these elements, or with certain catalysts such as triphenylarsenic oxide, triethylphosphine, or tributyltin oxide, or elevated temperatures may cause polymerization. Incompatible with glycols, amides, ammonia, caprolactam. Attacks some plastics, rubber, or coatings. The uninhibited monomer vapor may block vents and confined spaces by forming a solid polymer material. 

METHANE (74-82-8) Flammable gas (flash point -304°F/-187 C). Violent reaction with strong oxidizers. Incompatible with halogens, interhalogens. 

METHYL ETHYL BROMO-METHANE (78-76-2) Forms explosive mixture with air (flash point 70°F/21°C). Reacts violently with strong oxidizers. 

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