Page 377 - Handbook of Hazardous Chemical Properties

TOLUENE 2,4DIISOCYANATE 367

Fire Hazards - Flash Point : Not flammable; Flammable Limits in Air (9%): Not flammable; Fire
fitinguishing Agents: Dry powder or carbon dioxide on adjacent fires; Fire Extinguishing Agents Not
To Be Used: Do not use water if it can directly contact this chemical; Special Hazards of Combmtion
Products: Not pertinent; Behavior in Fire: If containers leak, a very dense white fume can form and
obscure operations; Ignition Temperature : Not flammable; Electrical Hazard: Not pertinent; Bum'ng
Rate: Not flammable.
Chemical Reactivity -Reactivity with WaterFReacts with moisture in air forming a dense white fume.
Reaction with liquid water gives off heat and forms hydrochloric acid; Reactivity with Common
Materials: The acid formed by reaction with moisture attacks metals, forming flammable hydrogen gas;
Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Acid formed by the
reaction with water can be neutralized by limestone, lime, or soda ash; Polymerization: Not pertinent;
Inhibitor of Polymerization: Not pertinent.

TOLUENE
Chemical Designations - Synonym: Methylbenzen, Methylbenzol, Toluol; Chemical Formula:
C6%CH3.
Observable Characteristics - Physical State (as normully shipped) : Liquid; Color: Colorless; Odor:
Pungent; aromatic, benzene-like; distinct, pleasant.
Physical and Chemical Properties - Physical State at 15 "c and 1 am. : Liquid; Molecular Weight:
92.14; Boiling Point at 1 am: 231.1, 110.6, 383.8; Freezing Point: -139, -95.0, 178.2; Critical
Temperature: 605.4, 318.6, 591.8; Critical Pressure: 596.1, 40.55, 4.108; Specific Gravity: 0.867 at
20 "C (liquid); Vapor (Gas) Density: Not pertinent; Ratio ofSpec@c Heats of Vapor (Gas): 1.089;
Latent Heat of Vaporization: 155, 86.1, 3.61; Heat of Combustion: -17,430, -9686, -405.5; Heat of
Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Air-supplied mask;
goggles and face shield; plastic gloves; Symptoms Following Exposure: Vapors irritate eyes and upper
respiratory tract; cause dizziness, headache, anesthesia, respiratory arrest. Liquid irritates eyes and
causes coughing, gagging distress, and rapidly developing pulmonary edema. If ingested causes
vomiting, griping, diarrhea, depressed respiration; General Treatment for Exposure: INHALATION:
remove victim to fresh air, give artificial respiration and oxygen if needed; call a doctor. INGESTION:
do NOT induce vomiting; call a doctor. EYES: flush with water for at least 15 min. SKIN: wipe off,
wash with soap and water; Toxicity by Inhalation (Threshold Limit Value): 100 ppm; Short-Tern
Exposure Limits: 600 ppm for 30 min.; Toxicity by Ingestion: Grade 2, LD,, 0.5 to 5 glkg; Late
Toxicity: Kidney and liver damage may follow ingestion; Vapor (Gas) Irritant Characteristics: Vapors
cause a slight smarting of the eyes or respiratory system if present in high concentration. The effect is
temporary; Liquid or SolidZmknt Characteristics: Minimum hazard. If spilled on clothing and allowed
to remain, may cause smarting and reddening of the skin; Odor Threshold: 0.17 ppm.
Fire Hazards - Flash Point (deg. F): 40 CC, 55 OC; Flammable Limits in Air (%): 1.27 - 7.0; Fire
Exfinguishing Agents: Carbon dioxide or dry chemical for small fire; ordinary foam for large fires; Fire
Extinguishing Agents Not To Be Used: Water may be ineffective; Special Hazards of Combustion
Products: Not pertinent; Behavior in Fire: Vapors are heavier than air and may travel considerable
distances to a source of ignition and flash back; Ignition Temperature (deg. F): 997; Electrical Hazard:
Class I, Group D; Buming Rate: 5.7 mmlmin.
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.

TOLUENE 2,4DItSOCYANA"E.
Chemical Designations - Synonym: Hylene T; Mondur TDS; Nacconate 100; 2,4-Tolylene
diisocyanate; TDE; Chemical Formula: 1-CXiL,C&3(NCO),-2,4.
Observable Characteristics - Physical State (as normally shipped): Liquid; Color: Colorless to light
yellow; Odor: Sweet, fruity, pungent.