Page 260 - Handbook of Hazardous Chemical Properties

250 METHYL ACETYLENE-PROPADIENE MIXTURE

Extinguishing Agents: Dry chemical, alcohol foam, carbon dioxide; Fire Mnguishing Agents Not To
Be Used: Water may be ineffective; Special Hazark of Combustion Products: Not pertinent; Behavior
in Fire: Vapor is heavier than fire and may travel a considerable distance to a source of ignition and
flash back; Ignition Temperature (deg. F): 935; Electrical Hazard: Data not available; Burning Rate:
3.7 mm/min.
Chemical Reactivity - Reactivity with Wafer: Reacts slowly to form acetic acid and methyl alcohol;
the reaction is not violent; Reactivity with Common Materials: No reaction; Stability During Tramport:
Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymrization: Not pertinent;
Inhibitor of Polymerization: Not pertinent.
ME= ACETYLENE-PROPADIENE MIXTURE
Chemical Designations - Synonyms: Allene-methylacetylene mixture; MAPP gas; Methylacetylene-
allene mixture; Propadiene-methylacetylene mixture; Chemical Formula: CH,C = CH + CH, = C = CH,. ,
Observable Characteristics -Physical State (as shipped) : Liquefied compressed gas; Color: Colorless;
Odor: Offensive, like acetylene.
Physical and Chemical Properties - Physical Stafe at 15 "c and I am. : Gas; Molecular Weight: 40.1;
Boiling Point af I atm.: -36 to -4, -38 to -20, 235 to 253; Freezing Point: Not pertinent; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specipc Gravity: 0.576 at 15 "C (liquid);
Vapor (Gas) Specific Gravity: 1.48; Ratio of Specific Heats of Vapor (Gas): 1.1686; Latent Heat of
Vhporization: 227, 126, 5.28; Heat of Combustion: -19,800, -11,000, -460; Heat of Decomposition:
Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Self-contained breathing
apparatus for high concentrations; safety goggles; protective gloves; Symptoms Following Enposure:
Simple asphyxiant. Toxicology of propadiene component not Nly established. Contact with liquid may
burn eyes and cause frostbite of skin; General Trement for Exposure: INHALATION remove to
fresh air; give artificial respiration if necessary. EYES or SKIN: treat burns caused by cold liquid;
Toxicity by Inhalation (Threshold Limit Value): 1000 ppm; Short-Tern Inhalation Limits: Data not
available; Toxicity by Ingestion: Not pertinent; Late Toxicity: Lung irritation in rats and dogs; Vapor
(Gas) Im.tant Characteristics: Data not available; Liquid or Solid Im'tm Characteristics: Data not
available; Odor I;hreshold: 100 ppm.
Fire Hazards - Flash Point : Not pertinent (flammable liquefied compressed gas); Flammable Limits
in Air (A): 3-1 1; Fire Extinguishing Agents: Let fire burn; shut off gas supply; cool adjacent exposures;
Fire Extinguishing Agents Not To Be Used: Not pertinent; Special Hazards of Combustion Products:
Not pertinent; Behavior in Fire: Containers may explode; Ignition Temperature (deg. F): 850;
Electrical Hazard: Data not available; Burning Rate: No data.
Chemical Reactivity - Reactivity with Wafer: No reaction; Reactivity with Common Materials: No
reaction, except forms explosive compounds in contact with alloys containing more than 67% copper
at high pressures; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not
pertinent; Polymerization: Not pertinent; Inhibitor of Polymerizalion: Not pertinent.

METHYL ACRYLATE
Chemical Designations - Synonyms: Acrylic acid, methyl ester; Methyl 2-propenoate; Chemical
Formula: C&=CHCOOCH,,
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless; Odor:
Characteristic acrylic; sweet, sharp; sharp, fragrant.
Physical and Chemical Properties - Physical State at 15 'C and I m.: Liquid; Molecular Weight:
86.09; Boiling Point at 1 &.: 177, 80.6, 353.8; Freezing Point: -105.7, -76.5, 196.7; Critical
Temperature: 505,263,536; Critical Pressure: 630,43,4.3; Specific Gravity: 0.956 at 20 "C (liquid);
Vhpor (Gas) Specijic Gravity: 3.0; Ratio of Specific Heats of Vhpor (Gas): 1.102; Latent Heat of
Vhporization: 160,90,3.8; Heat of Combustion: (est.) -9900, -5500, -230; HeatofDecomposition: Not
pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Organic canister for