Page 65 - Handbook of Hazardous Chemical Properties

BUTANE 55

54.09; Boiling Point at I atm.: 24.1, -4.4, 268.8; Freezing Point: -164, -108.9, 164.3; Critical
Temperature: 306, 152, 425; Critical Pressure: 628, 42.7, 4.32; Specijic Gravity: 0.621 at 20°C
(liquid); Vapor (Gas) Density: 1.9 at 20°C; Ratio of SpeciJic Heats of Vapor (Gas): 1.1; Latent Heat
of Vaporization: 180, 100, 4.19; Heat of Combustion: -19,008, -10,560, -442.13; Heat ofDecomposi-
tion: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Chemical-type safety
goggles; rescue harness and life line for those entering a tank or enclosed storage space; hose mask with
hose inlet in a vapor-free atmosphere; self-contained breathing apparatus; rubber suit; Symptoms
Following Exposure: Slight anesthetic effect at high concentrations; causes “frostbite” from skin
contact; slight irritation to eyes and nose in high concentrations; General Treatment for Exposure:
remove from exposure immediately. Call a physician. INHALATION: if breathing is irregular or
stopped, start resuscitation, administer oxygen. SKIN: remove contaminated clothing and wash affected
skin area. EYES: irrigate with water for at 15 min.; Toxicity by Inhalation (Threshold Limit Value):
1,000 ppm; Short-Term Exposure Limits: Data not available; Toxicity by Ingestion: Data not available;
Lute Toxicity: None; Vapor (Gas) Im’tant Characteristics: Vapors cause a slight smarting of the eyes
or respiratory system if present in high concentrations. The effect is temporary; Liquid or Solid Irritant
Characteristics: Minimum hazard. If spilled on clothing and allowed to remain, may cause smarting
and reddening of the skin because of frostbite; Odor Threshold: 4 mg/m3.
Fire Hazards - Flash Point (deg. F): -105 (est.); Flammable Limits in Air (a): 2.0 - 11.5; Fire
Extinguishing Agents: Stop flow of gas; Fire Extinguishing Agents Not To Be Used Not pertinent;
Special Hazarak of Combustion Products: Not pertinent; Behavior in Fire: Vapor is heavier than air
and can travel distances to ignition source and flash back. Containers may explode in a fire due to
polymerization; Ignition Temperature (deg. F): 788; Electrical Hazard: Class I, Group B; Burning
Rate: 8.0 mm/min.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reactions; Stability During Transport: Explosive decomposition when contaminated with peroxides
formed by reaction with air; Neutralizing Agents forAcids and Caustics: Not pertinent; Polymerization:
Polymerization inhibited when stabilizer is used; Inhibitor of Polymerization: ten-Butylcatehol(O.01 -
.
0.02 W)
BUTANE
Chemical Designations - Synonyms: n-Butane; Chemical Formula: n-C,H,,
Observable Characteristics - Physical State (as normully shipped) : Compressed gas; Color: Colorless;
Odor: Like gasoline.
physical and Chemical Properties - Physical State at 15 “c and I atm.: Gas; Molecular Weight:
58.12; Boiling Point at I atm.: 31.1, -0.48, 272.72; Freezing Point: -216, -138, 135; Critical
Temperature: 306, 152, 425; Critical Pressure: 550.8, 37.47, 3.796; SpeciJic Gravity: 0.60 at 0°C
(liquid); Vapor (Gas) Density: 20 at 20°C; Ratio of Specipc Heats of Vapor (Gas): 1.092; bent Heat
of Vaporization: 170,92,3.9; Heat of Combustion: -19,512, -10,840, -453.85; Heat ofDecomposition:
Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Self-contained breathing
apparatus and safety goggles; Symptoms Following Exposure: high exposure produces drowsiness but
110 other evidence of systemic effect; General Treatment for Exposure: ORAL AND ASPIRATION:
no treatment required. INHALATION: guard against self-injury if stuporous, confused, or
anesthetized. Apply artificial respiration if not breathing. Avoid administration of epinephrine or other
sympathomimetic amines. Prevent aspirations of vomitus by proper positioning of the head. Give
symptomatic and supportive treatment; Toxicity by Inhalation (ThresholdLMt Value) : 500 ppm; Short-
Term Exposure Limits: Data not available; Toxicity by Ingestion: Not pertinent; Lute Toxicity: None;
Vapor (Gas) Irritant Characteristics: None; Liquid or Solid Irritant Characteristics: No appreciable
hazard. Practically harmless to the skin because it is very volatile and evaporates quickly from the skin.
Some frostbite possible; Odor Threshold 6.16 ppm.
Fire Hazards - Flash Point (deg. F): -100 (est.); Flammable Limits in Air (W): 1.8 - 8.4; Fire