Page 123 - Handbook of Hazardous Chemical Properties

0-DICHLOROBENZENE 113
278.35; Boiling Point at I abn.: 635, 335, 608; Freezing Point: -31, -35, 238; Critical Temperature:
932, 500, 773; Critical Pressure: 250, 17, 1.7; Specijic Gravity: 1.049 at 20°C (liquid); Vapor (Gas)
Density: Not pertinent; Ratio of SpecQc Heats of Vapor (Gas): Not pertinent; Latent Heat of
Vaporization: Not pertinent; Heat of Combustion (Btu/lb. cal/g, x I@ Jkg): -13,300, -7,400, -310;
Heat of Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Eye protection;
Symptoms Following Exposure: Vapors from very hot material may irritate eyes and produce headache,
drowsiness, and convulsions; General Treatment for Exposure: Remove fresh air. Wash affected skin
areas with water. Flush eyes with water; Toxicity by Inhalation (Threshold Limit Value): 5 mg/m3;
Short-Tern Exposure Limits: Not pertinent; Toxicity by Ingestion: Grade 1; LD50 5 to 15 glkg; Lute
Toxicity: Birth defects in rats; polyneuritis in humans; Vapor (Gas) Initant Characteristics: Not
pertinent; Liquid or Solid Irritant Characteristics: No appreciable hazard. Practically harmless to the
skin; Odor Threshold Data not available.
Fire Hazards - Flash Point (deg. F): 355 OC; 315 CC; Flammable Limits in Air (91): 0.5 - 2.5
(calculated); Fire Extinguishing Agents: Dry powder, carbon dioxide, foam; Fire Extinguishing Agents
Not to be Used: Water or foam may cause frothing; Qecial Hazards of Combustion Products: Not
pertinent; Behavior in Fire: Not pertinent; Ignition Temperature (deg. F): 757; Electrical Hazard: Not
pertinent; Burning Rate: Data not available.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability During Transport: Stable; Neutralizing Agents forAcids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
0-DICHLOROBENZENE
Chemical Designations - Synonyms: 1 ,2-Dichlorobenzene; Downtherm E; Orthodichlorobenzene;
Chemical Formula: 0-C,H,CI,.
Observable Characteristics - Physical State (as nomlly shipped): Liquid; Color: Colorless; Odor:
Aromatic; characteristic aromatic.
Physical and Chemical Properties - Physical State at I5 "% and I atm. : Liquid; Molecular Weight:
147.01; Boiling Point at I atm.: 356.9, 180.5, 453.7; Freezing Point: 0.3, -17.6, 255.6; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Qecijic Gravity: 1.306 at 20°C (liquid);
Vapor (Gas) Density: Not pertinent; Ratio of Specijic Heats of Vapor (Gas): 1.080; Latent Heat of
Vaporization: 115, 63.9, 2.68; Heat of Combustion: -7,969, -4,427, -185.4; Heat of Decomposition:
Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Organic vapor-acid gas
respirator; neoprene or vinyl gloves; chemical safety spectacles, face shield, rubber footwear, apron,
protective clothing; JLmptoms Following Exposure: Chronic inhalation of mist vapors may result in
damage to lungs, liver, and kidneys. Acute vapor exposure can cause symptoms ranging from coughing
to central nervous system depression and transient anesthesia. Irritating to skin, eyas, and mucous
membranes. May cause dermatitis; General Treatment for Exposure: INHALATION: remove victim
to fresh air, keep him quiet and warm, and call a physician promptly. INGESTION: no known antidote;
treat symptomatically; induce vomiting and get medical attention promptly. EYES AND SKIN: flush
with plenty of water; get medical attention for eyes; remove contaminated clothing and wash before
reuse; Toxicity by Inhalation (Threshold Limit Value) : 50 ppm; Short-Tern Exposure Limits: 50 ppm
for 15 min.; Toxicity by Ingestion: Grade 2; LD,, 0.5 to 5 glkg; Late Toxicity: Causes liver and kidney
damage in rats. Effects unknown in humans; Vapor (Gas) Irritant Characteristics: Vapors cause
moderate irritation such that personnel will find high concentrations. unpleasant. The effect is
temporary; Liquid or Solid Irritmt Characteristics: Minimum hazard. If spilled on clothing and allowed
to remain, may cause smarting and reddening of the skin; Odor Threshold 4.0 ppm; 50 ppm.
Fire Hazards -Flash Point (deg. F): 165 OC; 155 CC; Flammable Limits in Air (W): 2.2 - 9.2; Fire
Extinguishing Agents: Water, foam, dry chemical or carbon dioxide; Fire Extinguishing Agents Not to
be Used: Not pertinent; Special Hazards of Combustion Products: Irritating vapors including hydrogen
chloride gas, chlorocarbones, chlorine; Behavior in Fire: Not pertinent; Ignition Temperature (deg. F):