Page 270 - Handbook of Hazardous Chemical Properties

260 METHYLFORMAL
degree burns on short exposure; may cause secondary burns on long exposure; Odor Zhreshold: Data
not available.
-
Fire Hazards - Flash Point (deg. F): 155 OC; Flammable Limits in Air (I): 6.6; Fire
1.1
Extinguishing Agents: Foam, carbon dioxide, dry chemical; Fire Extinguishing Agents Not To Be Used:
Not pertinent; Special Hazards of Combustion Products: Irritating vapors are generated when heated;
Behavior in Fire: Not pertinent; Ignition Temperature (deg. F): 939; Electrical Hazard: Not pertinent;
Burning Rate: Data not available.
Chemical Reactivity - Reactivity with Water: No rwtion; Reactivity with Common Materials: No
reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Flush with
water, neutralize with dilute acetic acid; Polymerization: Not pertinent; Inhibitor of Polymerization:
Not pertinent.

METHnFORMAL
Chemical Designations - Synonyms: Dimethoxymethane; Dimethylformal; Formaldehyde
dimethylacetat; Methylal; Methylene dimethyl ether; Chemical Fornula: CH,(OCH,),.
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless; Odor: Mild,
ethereal; chloroform-like.
Physical and Chemical Properties - Physical State at 15 "c and I am. : Liquid; Molecular Weight:
76.1; Boiling Point at I atm.: 108, 42, 315; Freezing Point: -157, -105, 168; Critical Temperme:
419,215,488; Critical Pressure: Not pertinent; Specijic Gravity: 0.861 at 20 "C (liquid); Vapor (Gas)
Specific Gravity: 2.6; Ratio of Specific Heats of Vapor (Gas): 1.0888; Latent Heat of Vaporizm'on:
161.5, 89.8, 3.76; Heat of Combustion: -10,970, -6,100, -255; Heat ofDecomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Self-contained brathug
apparatus or all-purpose canister mask; gloves; rubber gloves; chemical safety goggles; impervious
apron and boots; Symptoms Following Exposure: Inhalation causes irritation of respiratory system and
depression of central nervous system. Liquid causes irritation of eyes and will irritate skin if allowed
to remain. Ingestion causes depression of central nervous system; General Treatment for Exposure:
INHALATION: remove victim from contaminated area and administer artificial respiration and oxygen
if necessary. EYES: flush with plenty of water; get medical attention. SKIN: flush with plenty of
water. INGESTION: induce vomiting, then give gastric lavage and saline cathartics; subsequent
treatment is symptomatic and supportive; Toxicity by Inhalation (Threshold Limit Value): 1 ,OOO ppm;
Short-Tern Inhalation Limits: Data not available; Toxicity by Ingestion: Grade 1; LD,, 5 to 15 g/kg;
Late Toxicity: Liver and kidney injury may follow high exposures; Vapor (Gas) Irritant Characteristics:
Vapors causes a slight smarting of the eyes or respiratory system if present in high concentrations. The
effect is temporary; Liquid or Solid Irritant Characteristics: Minimum hazard. If spilled on clothing
and allowed to remain, may cause smarting and reddening of skin; Odor Threshold: Data not available.
Fire Hazards - Flash Point (deg. F): 0 OC; Flammable Limits in Air (96): 1.6 - 17.6; Fire
Extinguishing Agents: Dry chemical, foam, carbon dioxide; Fire Extinguishing Agents Not To Be Used:
Water may be ineffective; Special Hazards of Combustion Products: Irritating formaldehyde smoke may
be present in smoke; Behavior in Fire: Not pertinent; Ignition Temperature (deg. q: 459; Electrical
Hazard: Data not available; Burning Rate: 5.5 mmlmin.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

METHYL FORMATE
Chemical Designations - Synonyms: Formic acid, methyl ester; Chemical Fomla: HCOOH,.
Observable Characteristics - Physical State (as shipped) : Liquid; Color: Colorless; Odor: Pleasant;
agreeable.
Physical and Chemical Properties - Physical State at 15 'C and I am. : Liquid; Molecular Weight:
60.1; Boiling Point UI 1 atm.: 89.2, 31.8, 305; Freezing Point: -147.6, -99.8, 173.4; Critical
Temperature: 417, 214, 487; Critical Pressure: 870, 59.2, 6.00; Specipc Gravity: 0.977 at 20 "C