Page 346 - Handbook of Hazardous Chemical Properties

336 PYROGALLIC ACID
Toxicity by Inhalation (l3reshold Limit Value): 5 ppm; Short-Tern Exposure Limits: No data; Toxicity
by Ingestion: LD,, 0.5 to 5 g/kg (rat); Late Toxicity: Liver and kidney damage after ingestion; Vapor
(Gas) Im’tm Characteristics: Vapors cause moderate irritation; high concentrations are unpleasant.
Effect are temporary; Liquid or Solid Irritant Characteristics: Causes smarting of the skin and first-
degree burns on short exposure; causes secondary burns on long exposure; Odor Threshold 0.021 ppm.
Fire Hazards - Flash Point (deg. F): 68 CC; Flammable Limits in Air (46): 1.8 - 12.4; Fire
Extinguishing Agents: Alcohol foam, dry chemical, or carbon dioxide; Fire Extinguishing Agents Not
To Be Used: Water may be ineffective; Special Hazards of Combustion Products: Not pertinent;
Behavior in Fire: Vapor is heavier than air and may travel to a source of ignition and flash back;
Zgnition Temperature (deg. F): 900; Electrical Hazard: Class I, Group D; Burning Rate: 4.3 mmlrnin.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reactions; Stability During Transport: Stable; Neutmlizing Agentsfor Acids and Caustics: Hush with
water; Polymerization: Not pertinent; Inhibitor of Polymerizafion: Not pertinent.
PYROGALLIC ACID
Chemical Designations - Synonyms: 1,2,3-Benzenetriol; Pyrogallol; 112,3-Trihydroxybenzene;
Chemical Formula: 1,2,3-CJiI3(0H),.
Observable Characteristics - Physical State (as nonnally shipped):Solid; Color: White to gray; Odor:
None.
Physical and Chemical Properties - Physical State at I5 C and 1 am.: Solid; MolenrIar Weight:
126; Boiling Point at I atm.: 588,309,582; Freezing Point: 268,309,582; Critical Tempemure: Not
pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.45 at 20 “C (solid); Vapor (Gas)
Density: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Latent Heat of
Vaporization: Not pertinent; Heat of Combustion: -9.130, -5.070, -212; Heat ofDecomposition: Not
pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Rubber gloves: safety
goggles, dust mask; Symptoms Following Exposure: Inhalation of dust causes irritation of nose and
throat. Ingestion may cause severe gastrointestinal irritation, convulsions, circulatory collapse, and
death. Contact with eyes causes irritation. Skin contact can cause local discoloration, irritation. eczema,
and death: repeated contact can cause sensitization; General Treatment for Exposure: INHALATION
remove victim lo fresh air. INGESTION: give large amount of water: induce vomiting immediately:
consult a physician. EYES: flush with water for at least 15 min.: consult a physician. SKIN wash
immediately with soap and water: consult a physician if exposure has been severe; Toxicity by
Inhalation (ThresholdLimit Value): Data not available; Short-Term Exposure Limits: Data not available;
Toxicity by Ingestion: Grade2, oral LD,, =719 mglkg (rat); Lute Toxicity: Depresses growth in chicks;
Vapor (Gas) Im.tant characteristics: Data not available; Liquid or Solid Im’tant Characteristics: Data
not available; Odor Thresholri: Odorless.
Fire Hazards - Flash Point : Not pertinent; this is a combustible solid; Flummable Limits in Air (96):
Not pertinent; Fire Extinguishing Agents: Water, foam, dry chemical, or carbon dioxide; Fire
Extinguishing Agents Not To Be Used: Not pertinent; Special Hazards of Combustion Products: Not
pertinent; Behavior in Fire: Not pertinent; Zgnition Temperature : No data; Electrical Hazard: Not
pertinent; Burning Rate: Not pertinent.
Chemical Reactivity - Reactivity with Warer: No reactions; 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.