Page 257 - Handbook of Hazardous Chemical Properties

METHALLYL CHLQRDE 247

Not pertinent; Ignition Temperature : Not pertinent; Electrical Hazard: Not pertinent; Burning Rate:
Not pertinent.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability During Transport: Stable; Neutralizing Agents for Acid and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

MESITYL OXIDE
Chemical Designations - Synonyms: Isobutenyl methyl ketone; Isopropylideneacetone; Methyl
isobutenyl ketone; 4-Methyl -3-pentene-2-one; Chemical Formula: CH,COCH = C(CH,),.
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless to slightly yellow;
Odor: Strong; peppermint; honeylike.
Physical and Chemical Properties - Physical State at I5 "c and I atm. : Liquid; Molecular Weight:
98.2; Boiling Point at I atm.: 266, 130,403; Freezing Point: -51, -46,227; Critical Temperature: Not
pertinent; Critical Pressure: Not pertinent; Specific Gravity: 0.853 at 20 "C (liquid); Vapor (Gas)
Specific Gravity: 3.4; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Latent Heat of
Vaporization: 157, 81, 3.7; Heat of Combustion: -14,400, -8,000, -330; Heat OfDecomposition: Not
pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Air pack or organic
canister mask; rubber gloves; goggles; Symptoms Following Exposure: Inhalation causes irritation of
nose and throat, dizziness, headache, difficult breathiig. Contact with liquid or concentrated vapor
causes severe eye irritation. Liquid irritates skin. Ingestion causes irritation of mouth and stomach;
General TreatmentforExposure: INHALATION: remove victim to fresh air and restore breathing; call
physician. EYES: immediately flush with plenty of water for at least 15 min. SKIN: wash with water.
INGESTION: give large amount of water; call physician; Toxicity by Inhalation (Threshold Limit
Value): 25 ppm; Short-Tern Inhalation Limits: 1,000 pprn for 60 min.; Toxicity by Ingestion: Grade
2; oral LD, = 1,120 mglkg (rat); Late Toxicity: Data not available; Vapor (Gas) Irritant
Characteristics: Vapors cause moderate irritation such that personnel will find high concentrations
unpleasant. The effect is temporary; Liquid or Solid Irritant Characteristics: Causes smarting of the
skin and first-degree burns on short exposure; may cause secondary bums on long exposure; Odor
Threshold: 12 ppm.
Fire Hazards -Flash Point (deg. F): 84 OC; 73 CC; Flammable Limits in Air (W): Data not available;
Fire Ektinguishing Agents: Alcohol foam, dry Chemical, carbon dioxide; Fire Extinguishing Agents Not
To Be Used: Water may be ineffective; Special Hazards of Combustion Products: Not pertinent;
Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of
ignition and flash back; Ignition Temperature (deg. F): 652; Electrical Hazard: Data not available;
Burning Rate: 4.2 mm/min.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

METHALLYL CHLORIDE
Chemical Designations - Synonyms: gamma-Chloroisobutylene; 3-Chloro-2-methylpropene; beta-
Methallyl chloride; beta-Methylallyl chloride; Chemical Formula: CH, = C(CH,)CH,Cl.
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless to straw; Odor:
Pungent; penetrating.
Physical and Chemical Properties - Physical State at 15 "c and I atm. : Liquid; Molecular Weight:
90.55; Boiling Point at I ann.: 162.0, 12.2, 345.4; Freezing Point: <-112, <-80, < 193; critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specijic Gravity: 0.928 at 20 "C (liquid);
Vapor (Gas) Specijic Gravity: 3.12; Ratio of Specific Heats of Vapor (Gas): 1.0893; Latent Heat of
Vaporization: 160, 89, 3.7; Heat of Combustion: (est.) -1 1,600, -6,500, -270; Heat ofDecomposition:
Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Organic canister mask;