Page 345 - Handbook of Hazardous Chemical Properties

PYRIDINE 335

Formula: CH&HCH,NH.
Observable Characteristics - Physical State (as nonnully shipped): Liquid; Color: Colorless; Odor:
Strong, ammonia-like.
Physical and Chemical Properties - Physical State at I5 "c and I atm. : Liquid; Molecular Weight:
57.1; Boiling Point at I am.: 151,66,339; Freezing Point: Not pertinent; Critical Temperature: Not
pertinent; Critical Pressure: Not pertinent; Spec@c Gravity: 0.802 at 25 "C (Liquid); Vapor (Gar)
Density: 2; Ratio of Specific Heats of Vapor (Gas): Data not available; Latent Heat of Vqorization:
250, 139, 5.82; Heat of Combustion: (est.) -15.500, -8.600, -360; Heat of Decomposition: Not
pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Self-contained breathing
apparatus; goggles or face shield; @mptoms Following Exposure: Inhalation causes vomiting, breathing
difficulty, and irritation of eyes, nose, and throat; on prolonged exposure, vapors tend to redden the
whites of the eyes. Contact with liquid causes eye irritation, like that &used by strong ammonia. Liquid
causes skin burns, which are slow lo heal. Ingestion causes burns of mouth and stomach; Generd
Treafment for Exposure: INHALATION move victim to fresh air; if he is not breathing, apply
artificial respiration, oxygen; if breathing is difficult, administer oxygen; call physician. EYES: flush
with plenty of water for at least 30 min. and obtain prompt medical attention. SKIN: remove all
contaminated clothing and flush with water; rinse with vinegar and water. INGESTION: drink large
amounts of milk or water; get prompt medical attention; Toxicity by Inhalation (Threshold Limit
Value):2 ppm; Short-Tern Exposure Limits: Data not available; Toxicity by Ingestion: Grade 4, oral
LD,, = 19 mg/kg (rat); Late Toxicity: Data not available; Vapor (Gas) Irntant Characteristics: Data
not available; Liquid or Solid Irritant Characteristics: Data not available; Odor l7zreshold: Data not
available.
Fire Hazards -Flash Point (&g. F): 25 OC; Flammable Limits in Air (96): No data; Fire Extinguishing
Agents: Dry chemical or carbon dioxide; Fire Extinguishing Agents Not To Be Used: Water or foam
may be ineffective; Special Hazards of Combustion Products: Irritating nitrogen oxides are generated
in fires; Behavior in Fire: Containers may explode when exposed to heat; Ign'tion Temperature : No
data; Electrical Hazard: No data; Burning Rate: 4.1 dmin.
Chemical Reactivity - Reactivity with Water: A slow, non-hazardous reaction occurs, forming
propanolamine; Reactivity with Common Materials: No reactions; Stability During Transport: The
product is stable if it is kept in contact with solid caustic soda (sodium hydroxide); Neutrelizing Agents
for AcidF and Caurtics: Dilute with water and rinse with vinegar solution; Polymerization: This
material will polymerize explosively when in contact with any acid; Inhibitor of Polymerization: Solid
sodium hydroxide (caustic soda).

PYRIDINE
Chemical Designations - @nonyms: No common synonyms; Chemical Fornula: C,H,N.
Observable Characteristics - Physical State (as mdly shipped) : Liquid; Color: Yellow or colorless;
Odor: Disagreeable: strong unpleasant, characteristic unpleasant: sharp penetrating, unpleasant.
Physical and Chemical Properties - Physical State at I5 "c and I am.: Liquid; Molecular Weight:
79.1; Boiling Point at I am.: 239.5, 115.3, 388.5; Freezing Point: -44, -42, 231; Critical
Temperature: 656.2, 346.8, 620; Critical Pressure: 817.3, 55.6, 5.63; Specijic Gravity: 0.983 at 20
"C (solid); Vqor (Gar) Density: 2.73; Ratio ofSpecipc Heats of Vapor (Gas): 1.123; Latent Heat of
Vaporization: 193, 107, 4.48; Heat of Combustion: -14.390, -7992, -334.6; Heat ofDecomposition:
Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Air-supplied mask or
organic canister; vapor-proof goggles; rubber gloves and protective clothing; @mptoms Following
Exposure: Vapor irritates eyes and nose. Liquid irritates skin and is absorbed through the skin.
Overexposure causes nausea, headache, nervous symptoms, increased ~ri~ry frequency; General
Treatment fir Exposure: INHALATION remove victim from contaminated area; give artificial
respiration and oxygen if necessary; treat symptomatically. INGESTION induce vomiting and follow
with gastric lavage. SKIN wash thoroughly with water. EYES: irrigate with water for at least 15 min.