Page 19 - Handbook of Hazardous Chemical Properties

ACRYLIC ACID 9

plenty of water for at least 15 min. and get medical promptly. SKIN: immediate, continuous, and
thorough washing in flowing water is imperative, preferably deluge shower with abundant soap; if
burns are present, get medical help; discard all contaminated clothing and wearing accessories; Toxicity
by Inhalation (Threshold Limit Value): 0.3 mglm'; Short-Term Exposure Limits: Data not available;
Toxicity by Ingestion: Grade 3; oral rat LD,, 170 mg/kg; Late Toxicity: Repeated exposure to small
amounts may cause essentially reversible neurological effects; Vapor (Gar) Irritant Characteristics:
Data not available; Liquid or Solid Irritant Characteristics: Data not available; Odor Threshold: Not
pertinent.
Fire Hazards - Flash Point: Not flammable; Flammable Limits in Air (%): Not flammable; Fire
Extinguishing Agents: Not pertinent; Fire &inguishing Agents Not To Be Used Not pertinent; Special
Hazards of Combustion Products: Toxic oxides of nitrogen may form in fire; Behavior in Fire: Sealed
containers may burst as a result of polymerization; Ignition Temperature: Not pertinent; Electrical
Hazard Not pertinent; Burning Rate: Not pertinent.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: Data
not available; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not
pertinent; Polymerization: May occur at temperature above 50°C (120" F); Inhibitor of Polymerization:
Oxygen (air) plus 50 ppm of copper as copper sulfate.

ACRYLIC ACID
Chemical Designations - Synonyms: Propenoic Acid; Chemical Formula: CH,= CHCOOH.
Observable Characteristics - Physical State (as normally shipped) : Liquid; Color: Colorless; Odor:
Acrid.
Physical and Chemical Properties - Physical State at I5 "c and I atm. : Liquid; Molecular Weight:
72.06; Boiling Point at I atm.: 286.3, 141.3, 414.5; Freezing Point: 54.1, 12.3, 285.5; Critical
Temperature: 648, 342, 615; Critical Pressure: 840, 57, 5.8; Specific Density: 1.0497 at 20 "C
(liquid); Vapor (Gas) Gravity: Not pertinent; Ratio of Specific Heats of Vapor (Gar): 1.121; Latent
Heat of Vaporization: 272.7, 151.5, 6.343; Heat of Combustion: -8100, -4500, -188.4; Heat of
Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Chemical respirator at
ambient temperatures to avoid inhalation of noxious fumes; rubber gloves if exposed to wet material;
acid goggles or face shield for splash exposure; safety shower andlor eye fountain may be required;
Symptoms Following Exposure: May burn skin or eyes upon short contact. INHALATION: eye and
nasal irritation and lacrimation. INGESTION: may cause severe damage to the gastrointestinal tract;
General Treatment for Exposure: Get medical attention promptly for all exposures. INHALATION:
remove victim to fresh air. INGESTION: do NOT induce vomiting. SKIN OR EYES: flush with water
for at least 15 min.; Toxicity by Inhalation (Threshold Limit Value): Data not available; Short-Term
Exposure Limits: Data not available; Toxicity by Ingestion: Grade 2; LD50 0.5 to 5 g/kg (rat); Late
Toxicity: Not pertinent; Vapor (Gas) Irritant Characteristics: Vapor is moderately irritating such that
personnel will not usually tolerate moderate or high vapor concentrations; Liquid or Solid Irritant
Characteristics: Fairly severe skin irritant; may cause pain second-degree burns after a few minutes
of contact; Odor Threshold Data not available.
Fire Hazards - Flash Point (deg. F): (Glacial) 118 OC; Flammable Limits in Air (9%): (Tech.) 2.4
LEL; Fire Extinguishing Agents: Water spray, alcohol foam, dry chemical, or carbon dioxide; Fire
Extinguishing Agents Not To Be Used Not pertinent; Special Hazards of Combustion Products: Toxic
vapor are generated when heated; Behavior in Fire: May polymerize and explode; Ignition Temperature
(deg. F): 374; Electrical Hazard Not pertinent; Burning Rate: 1.6 mdmin.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability During Transport: Normally unstable but will be detonate; Neutralizing Agents for
Acids and Caustics: Wash with water, rinse with sodium bicarbonate solution; Polymeriz&'on: May
occur in contact with acids, iron salts, or at elevated temperatures and release high energy rapidly; may
cause explosion under confinement; Inhibitor of Polymerization: Monomethyl ether of hydroquinone
180-200 ppm; phenothiazine (for tech. grades) lo00 ppm; hydroquinone (0.1 %); methylene blue (0.5