Page 230 - Handbook of Hazardous Chemical Properties

220 ISOPENTANE
Characteristics: No appreciable hazard. Practically harmless to the skin; Odor Threshold Data not
available.
Fire Hazards - Flash Point (deg. F): 180 OC; Flummable Limits in Air (W): 0.9 - 5.7; Fire
Extinguishing Agents: Water, foam, dry chemical, or carbon dioxide; Fire Extinguishing Agents Not
To Be Used: Not pertinent; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire:
Not pertinent; Ignition Temperature (deg. F): 530; Electrical Hazard: Not pertinent; Burning Rate: No
data.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

ISOPENTANE
Chemical Designations - Synonyms: 2-Methylbutane; Chemical Formula: (CH,),CHCH,CH,,
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless; Odor: Like
gasoline.
Physical and Chemical Properties - Physical State at 15 'C and 1 atm. : Liquid; Molecular Weight:
72.15; Boiling Point at 1 atm.: 82.2, 27.9, 301.1; Freezing Point: -255.8, -159.9, 113.3; Critical
Temperature: 369.0, 187.2,460.4; Critical Pressure: 491.0,33.4,3.38; Specific Gravity: 0.620 at 20
"C (liquid); Vapor (Gas) Specific Gravity: 2.5; Ratio of Specific Heats of Vapor (Gas): 1.076; Latent
Heat of Vaporization: 146, 81.0, 3.39; Heat of Combustion: -19,314, -10,730, 449.24; Heat of
Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Eye protection (as for
gasoline); Symptoms Following Exposure: Inhalation causes irritation of respiratory tract, cough, mild
depression, irregular heartbeat. Aspiration causes severe lung irritation, coughing, pulmonary edema;
excitement followed by depression. Ingestion causes nausea, vomiting, swelling of abdomen, headache,
depression; General Treatment for Exposure: INHALATION: maintain respiration, give oxygen if
needed. ASPIRATION: enforce bed rest; give oxygen. INGESTION do NOT induce vomiting; call
a doctor. EYES: wash with copious amount of water. SKIN: wipe off, wash with soap and water;
Toxicity by Inhalation (ThreshoMLimit Value) : Data not available; Short-Tern Inhalation Limits: Data
not available; Toxicity by Ingestion: Grade 1, LD,, 5 to 15 glkg; Late Toxicity: None; Vapor (Gas)
Irritant Characteristics: Vapors are nonirritating to the eyes and throat; Liquid or Solid Irritant
Characteristics: No appreciable hazard. Practically harmless to the skin; Odor Threshold Data not
available.
Fire Hazards - Flash Point (deg. F): -70 CC; Flammable Limits in Air (W): 1.4 - 8.3; Fire
Extinguishing Agents: Dry chemical, foam, or carbon dioxide; Fire Extinguishing Agents Not To Be
Used: Water may be ineffective; Special Hazards of Combustion Products: Not pertinent; Behavior in
Fire: This is a highly volatile liquid. The vapors are explosive when mixed with air; Ignition
Temperature (deg. F): 800; Electrical Hazard: Not pertinent; Burning Rate: 7.4 mmlmin.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability Dm'ng Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymeriz&'on: Not pertinent.

ISOPHORONE
Chemical Designations - Synonyms: 3,5,5-Trimethyl-2-cyclohexene-l-one; Chemical Formula:
COCH = C(CH,)C&C(CH,),C&,
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless; Odor: Like
camphor.
Physical and Chemical Properties - Physical State at 15 'C and 1 atm.: Liquid; Molecular Weight:
138.2; Boiling Point at 1 atm.: 419.5, 215.3, 488.5; Freezing Point: 17.4, -8.1, 265.1; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; SpeciBc Gravity: 0.921 at 25 "C (liquid);
Vapor (Gas) Specific Gravity: 4.75; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Latent Heat
of Vaporization: 135, 75, 3.14; Heat of Combustion: -16,170, -8,980, -376; Heat OfDecomposition: