Page 398 - Handbook of Hazardous Chemical Properties

388 UREA PEROXIDE

60.06; Boiling Point at I am. Decomposes; Freezing Point: 271, 133,406; Critical Temperature: Not
:
pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.34 at 20°C (solid); Vapor (Gas) Density:
Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Lutent Heat of Vaporization: Not
pertinent; Heat of Combustion: -3913, -2174, -91.02; Heat ofDecomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Goggles or face shield;
dust mask; Symptoms Following Exposure: May irritate eyes; General Treatment for Exposure: Wash
eyes with water; Toxicity by Inhalation (Threshold Limit Value) : Not pertinent; Short-Tern Exposure
Limits: Not pertinent; Toxicity by Ingestion: Data not available; Lute Toxicity: None; Vapor (Gas)
Irritant Characteristics: Non-volatile; Liquid or Solid Irritant Characteristics: None; Odor z7rreshold:
Not pertinent.
Eire Hazards - Flash Point : Not flammable; Flammable Limits in Air (%): Not flammable; Fire
Extinguishing Agenrs: Water; Fire Extinguishing Agents Not to be Used: Not pertinent; Special Hazards
of Combustion Products: Not pertinent; Behavior in Fire: Melts and decomposes, generating ammonia;
Ignition Temperature : Not flammable; Electrical Hazard Not pertinent; Burning Rate: Not flammable.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reactions; Stability During Tramport: Occurs only above melting point (132"C), yielding ammonia and
other products. The decomposition is not explosive; Neutralizing Agents for Acids and Cmstics: Not
pertinent; Polymerizm*on: Not pertinent; Inhibitor of Polymerization: Not pertinent.

UREA PEROXIDE
Chemical Designations - Synonyms: Carbamide peroxide, Carbonyldiamine, Hydrogen peroxide
carbamide, Percarbamide, Perhydrol-Urea, Urea hydrogen peroxide; Chemical Fomla:
CO(NH,),*H,O,.
Observable Characteristics - Physical State (as normally shipped): Solid; Color: White; Odor: None.
Physical and Chemical Properties - Physical State at 15 "c and I atm. : Solid; Molecular Weight:
94.1; Boiling Point at I atm.: Not pertinent (decomposes); Freezing Point: Not pertinent; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 0.8 at 20 "C (solid);
Vapor (Gas) Density: Not pertinent; Ratio of Specijic Heats of Vapor (m): Not pertinent; Latent Heat
ofVaporizm*on: Not pertinent; Heat of Combustion: Not pertinent; Heat ofDecomposition: -540, -300,
-12.5.
Health Hazards Information - Recommended Personal Protective Equipment: Rubber gloves and
protective goggles; Symptoms Following Exposure: Inhalation of dust causes irritation of nose From
hydrogen peroxide formed when heated. Contact with eyes causes severe damage. Contact with moist
skin causes temporary itching or burning sensation. Ingestion causes irritation of mouth and stomach;
General Treatmentfir Exposure: INHALATION: remove victim from exposure; call physician. EYES:
wash thoroughly with large quantities of water for at least 15 rnin., call physician; Toxicity by
Inhalation (Threshold Limit Value) : Data not available; Short-Tern Exposure Limits: Data not available;
Toxicity by Ingestion: Data not available; Late Toxicity: Data not available; Vapor (Gas) Irritant
Characteristics: Data not available; Liquid or Solid Irritanl Characteristics: Data not available; Odor
Threshold Not pertinent.
Fire Hazards -Flash Point : Not pertinent. This is a combustible solid that may cause fire upon contact
with ordinary combustible materials; Flammable Limits in Air (%): Not pertinent; Fire Extinguishing
Agents: Inert powders such as sand and limestone, or water; Fire Extinguishing Agents Not to be Used:
Not pertinent; Special Hazards of Combustion Products: Irritating ammonia gas may be formed in fires;
Behavior in Fire: Melts and decomposes, giving off oxygen and ammonia. Increases the severity of
fires. Containers may explode; Ignition Temperature (deg. F): > 680; Electrical Hazard: No data;
Burning Rate: Not pertinent.
Chemical Reactivity - Reactivity with Water: Forms solution of hydrogen peroxide. The reaction is
nonhazardous; Reactivity with Common Materials: There are no significant reactions under ordinary
conditions and temperatures. At 50 "C (122 of) the chemical reacts with dust and rubbish; Stability
During Tmport: Stable below 60 "C (140 of); Neutralizing Agents for Acids and Gzwtics: Not
pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.