Page 147 - Handbook of Hazardous Chemical Properties

DIMETHnSULFATE 137

Chemical Reactivity - Reactivity with Water : No reaction; Reactivity with Common Materials: No
hazardous reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not
pertinent; Polymerization: Not pertinent; Znhibitor of Polymerization: Not pertinent.

DIMETHYL ETHER
Chemical Designations - Synonyms: Methyl Ether; Wood Ether; Chemical Formula: CH,OCH,.
Observable Characteristics - Physical State (as normally shipped) : Liquid under pressure; Color:
Colorless; Odor: Chloroform-like; sweet.
Physical and Chemical Properties - Physical State at 15 rand Z atm. : Gas; Molecular Weight: 46.1;
Boiling Point at 1 atm.: -12.5, -24.7, 248.5; Freezing Point: -222.7, -141.5, 131.7; Critical
Temperature: 260.4, 1269,400.1; Critical Pressure: 780,53,5.4; Specijic Gravity: 0.724 at -24.7"C
(liquid); Vapor (Gas) Density: 1.6; Ratio of Specijic Heats of Vapor (Gas): 1.1456; Latent Heat of
Vaporization: 200,111,4.65; Heat of Combustion: -13,450, -7,480, -313; Heat ofDecomposition: Not
pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Mask for organic
vapors; plastic or rubber gloves; safety glasses; Symptoms Following Exposure: Inhalation produces
some anesthesia (but less than that of ethyl ether), blurring of vision, headache, intoxication, loss of
consciousness. Liquid or concentrated vapor irritates eyes. Contact of liquid with skin may cause
frostbite; General Treatment for Exposure: INHALATION: remove from exposure and support
respiration; call physician. EYES: wash with water for at least 15 min.; consult an eye specialist.
SKIN: treat frostbite by use of warm water or by wrapping the affected part blanket; Toxicity by
Zilhalation (Threshold Limit Value) : Data not available; Short-Term Exposure Limits: Data not available;
Toxicity by Ingestion: Not pertinent; Lute Toxicity: Data not available; Vapor (Gas) Irritant
Characteristics: Data not available; Liquid or Solid Zm'tant Characteristics: Data not available; Odor
Threshold Data not available.
Fire Hazards - Flash Point : Not pertinent (flammable gas); Flammable Limits in Air (%): 2 - 50; Fire
Extingllishing Agents: Let fre burn; shut off gas flow; cool exposed surroundings with water; Fire
Extinguishing Agents Not to be Used: Not pertinent; Special Hazards of Combustion Products: Not
pertinent; Behavior in Fire: Containers may explode. Vapors are heavier than air and may travel long
distance to source of ignition and flash back; Zgnition Temperature (deg. F): 662; Electrical Hazard:
Data not available; Burning Rate: 6.6 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; Znhibitor of Polymerization: Not pertinent.

DIMETHYL SULFATE
Chemical Designations - Synonyms: No common synonyms; Chemical Formula: (CH,),SO,.
Observable Characteristics - Physical State (as normally shipped): Liquid; Color: Colorless; Odor:
No characteristic odor; slight, not distinctive; weak onion.
Physical and Chemical Properties - Physical State at 15 "c and 1 atm. : Liquid; Molecular Weight:
126.13; Boiling Point at Z atm.: 371.8, 188.8, 462; Freezing Point: -25.2, -31.8, 241.4; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specijic Gravity: 1.33 at 15°C (liquid);
Vapor (Gas) Density: Not pertinent; Ratio of Specijic Heats of Vapor (Gas) Not pertinent; Latent Heat
:
of Vaporiza'on: Not pertinent; Heat of Combustion: Not pertinent; Heat of Decomposition: Not
pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Chemical goggles; self-
contained breathing apparatus; safety hat; rubber suit; rubber shoes; rubber gloves; safety shower and
eye wash fountain; Symptoms Following Eqosure: Severe irritation of eyes, eyelids, respiratory tract
and skin. Dry, painful cough; foamy, white sputum; difficulty in breathing; malaise and fever;
inflammationand edema of lungs; General Treatmentfor Exposure: Contact with dimethyl sulfate liquid
or vapor (> 1 ppm) requires immediate treatment. Call a physician, even if there is no evidence of
injury, as symptoms may not appear for several hours. INHALATION: get victim to fresh air