Page 315 - Handbook of Hazardous Chemical Properties

PARATHION, LIQUID 305

not available; Odor 77zreshold Not pertinent.
Fire Hazards - Flash Point : Not flammable, but supports combustion; Flammable Limits in Air (46):
Not flammable; Fire Extinguishing Agents: Not pertinent; Fire fitinguishing Agents Not to be Used:
Not pertinent; Special Hazardr of Combustion Products: Not pertinent; Behavior in Fire: Increases
intensity of any fire. Mixtures of liquid oxygen and any fuel are highly explosive; Ignition Temperature
: Not pertinent; Electrical Hazard Not pertinent; Burning Rate: Not pertinent.
Chemical Reactivity -Reactivity with Water: Heat of water will vigorously vaporize liquid oxygen;
Reactivity with Common Materials: Avoid organic and combustible materials, such as oil, grease, coal
dust, etc. If ignited, such mixtures can explode. Low temperature may cause brittleness in some
materials; Stability During Transport: Stable; Neutralizing Agents for Acidr and Causrics: Not
pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

P

PARAFORMALDEWDE
Chemical Designations - Synonyms: Formaldehyde polymer; Polyformaldehyde; Polyfooxymethylene;
Polyoxymethylene glycol; Chemical Formula: HO(CH,O)nH.
Observable Characterktics - Physical State (as shipped): Solid; Color: White; Odor: Pungent and
irritating; like formaldehyde.
Physical and Chemical Properties - Physical State at 15 rand 1 arm. : Solid; Molecular Weight: 600
(approx.); Boiling Point at I arm.: Decomposes; Freezing Point: 311 - 342, 155 - 172, 428 - 455;
Critical Temperature: Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 1.46 at 15 "C
(solid); Vapor (Gas) Specific Gravity: Not pertinent; Ratio of Specijic Heats of Vapor (Gas): Not
pertinent; Latent Heat of Vaporization: Not pertinent; Heat of Combustion: -6682, -3712, -155.4; Heat
of Decomposition: Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Goggles or face shield;
protective clothing; Symptoms FolLowing Exposure: Vapor or dust irritates eyes, mucous membranes,
and skin; may cause dermatitis. Ingestion of solid or of a solution in water irritates mouth, throat, and
stomach and may cause death, General Treatment for Exposure: INGESTION: give milk or white of
egg beaten with water; call a doctor. SKIN OR EYES: rinse with copious amounts of water; Toxicity
by Inhalation (Threshold Limit Value): 5 ppm; Short-Tern Inhalation Limits: Data not available;
Toxicity by Ingestion: Grade 3, LD,, 50 to 500 mglkg; Late Toxicity: Data not available; Vapor (Gas)
Irritant Characteristics: Vapor is moderately irritating such that personnel will not usually tolerate or
high vapor concentrations; Liquid or Solid Irritant Characteristics: Minimum hazard. If spilled on
clothing and allowed to remain, may cause smarting and reddening of skin; Odor 17rreshold: Data not
available.
Eire Hazards - Flash Point (deg. F): 199 OC; 160 CC; Flammable Limits in Air (46): (formaldehyde
gas) 7.0 - 73.0; Fire Extinguishing Agents: Water, foam, dry chemical, carbon dioxide; Fire
Extinguishing Agents Not to be Used: Data not available; Special Hazardr of Combustion Products: Not
pertinent; Behavior in Fire: Changes to formaldehyde gas which is highly flammable; Ignition
Temperature (deg. F): 572 (approx.); Electrical Hazard: Not pertinent; Burning Rate: Not pertinent.
Chemical Reactivity - Reactivity with Water: Forms water solution of formaldehyde gas; Reactivity
with Common Materials: No reaction; Stability During Tramport: Slowly decomposes to formaldehyde
gas; Neutralizing Agents forAcids and caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor
of Polymerization: Not pertinent.
PARATHION, LIQUID
Chemical Designations - Synonyms: 0,O-Diethyl 0-(p-nitrophenyl) phoshorothioate; 0,O-Diethylo-
(p-nitrophenyl) thiophosphate; Ethyl Parathion; Phosphorothioic acid; 0,O-diethyl 0-p-nitrophenyl