Page 16 - Handbook of Hazardous Chemical Properties

6 ACETYL PEROXIDE

78.5; Boiling Point at I am.: 124,51, 324; Freezing Point: -170, -112, 161; CriticalTemperature:
475,246,519; Critical Pressure: 845,57.5,5.83; Specific Gravity: 1.1039 at 21 "C (liquid); Vapor
(Gas) Density: 3; Ratio of Specific Heats of Vapor (Gas): 1.1461; Latent Heat of Vaporization: 160,
88, 3.1; Heat of Combustion: 6000, -3300, -140; Heat ofDecomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Safety goggles, rubber
or plastic gloves, self contained breathing apparatus (SCBA); Symptoms Following Exposure: Vapor
irritates mucous membranes. Ingestion of liquid or contact with eyes or skin causes severe irritation;
General Treatment for Exposure: INHALATION; Remove victim from exposure and seek immediate
medical attention. EYES: Flush with copious amounts of fresh running water. INGESTION:
Administer plenty of water; do not induce vomiting; Toxicity by Inhal&*on (Threshold Limit Value):
No data; Short-Tern Exposure Limits: No data; Toxicity by Ingestion: Readily hydrolyzes to form
hydrochloric and acetic acids. Oral human LD, 1470 mgkg (acetic acid). oral rat LD,, 3310 mg/kg
(acetic acid); Lute Toxicity: None; Vapor (Gas) Irritant Characteristics: Vapors cause severe irritation
of eyes and throat and can cause eye and lung injury. Cannot be tolerated even at low concentrations;
Liquid or Solid Imhnt Characteristics: Severe skin irritant. Causes second- and third-degree chemical
burns on short contact and is very damaging to eyes; Odor Threshold: Acetic acid - 1 ppm;
hydrochloric acid - 1 ppm.
Fire Hazards - Flash Point (deg. F): 40 CC; FIammabe Limits in Air (46): Data not available; Fire
Extinguishing Agents: Carbon dioxide, dry chemical; Fire Extinguishing Agents Not To Be Used
Water, foam; Special Hazards of Combustion Products: When heated to decomposition, hydrogen
chloride and phosgene, extremely poisonous gases, are involved; Behavior in Fire: Vapor is heavier
than air and may travel a considerable distance to a source of ignition and flash back; Ignition
Temperature (deg. F):734; Electrical Hazard Data not available; Burning Rate: 2.6 mm/min.
Chemical Reactivity - Reactivity with Water: Reacts vigorously with water, involving hydrogen
chloride fumes (hydrochloric acid); Reactivity with Common Materials: Is highly corrosive to most
metals in the presence of moisture; Stability During Transport: Stable; Neutralizing Agents for Aciak
and Caustics: Following dilution with water, limestone or sodium bicarbonate can be used;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

ACETYL PEROXIDE
Chemical Designations - Synonyms: Diacetyl Peroxide Solution; Chemical Formula:
CH,CO(OJOCCH, in dimethyl phthalate.
Observable Characteristics - Physical State (as normally shipped): Liquid; Color: Colorless; Odor:
Pungent.
Physical and Chemical Properties - Physical State at 15 "c and I arm. : Liquid; Molecular Weight:
Mixture; Boiling Point at I atm. : Decomposes; Freezing Point: 17, -8,265; Critical Temperame: Not
pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.2 at 20 "C (liquid); Vapor (Gas)
Density: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Latent Heat of
Vaporization: Not pertinent; Heat of Combustion: -15,700, -8750; -366; Heat of Decomposition: -50,
-28, -1.2.
Health Hazards Information - Recommended Personal Protective Equipment: Protective goggles,
rubber apron, and gloves; syn?poms Following Exposure: Contact with liquid causes irritation of eyes
and skin. If ingested, irritates mouth and stomach; General Treatmentfor Exposure: EYES: Wash with
plenty of water and seek medical attention. SKIN: Flush with water and wash thoroughly with soap and
water; seek medical attention. INGESTION Induce vomiting and seek immediate medical attention;
Toxicity by Inhalation (Threshold Limit Value): No data; Short-Tern Exposure Limits: No data; Taxicity
by Ingestion: No data; Late Toxicity: No data; Vapor (Gas) Irritant Characteristics: No data; Liquid
or Solid Irritant Characteristics: No data; Odor Threshold No data.
Fire Hazards - Flash Point (deg. fl: 113 OC; Flammable Limits in Air (416): Not pertinent; Fire
Extinguishing Agents: Water, dry chemical, carbon dioxide; Fire Extinguishing Agents Not To Be Used
Not pertinent; Special Hazards of Combustion Products: Not pertinent; Behavior in Fire: May explode.
Burns with accelerating intensity; Ignition Temperature (deg. F) : Explodes; Electrical Hazaml: Data