Page 140 - Handbook of Hazardous Chemical Properties

130 1,l DIFLUOROETHAh’E

1,l DIFLUOROETRANE
Chemical Designations - Synonyms: Ethylidene Difluoride; Ethylidene Fluoride; Refrigerant 152a;
Chemical Formula: CH,C€IF2.
Observable Characteristics - Physical State (as normally shipped): Liquefied compressed gas; Color:
Colorless; Odor: Faint.
Physical and Chemical Properties - Physical State at 15 ‘C and I am. : Gas; Molecular Weight:
66.05; Boiling Point at I atm.: 52.3, 11.3, 248.5; Freezing Point: -179, -117, 156; Critical
Temperature: 236.3, 113.5.386.6; Critical Pressure: 652,44.37,4.50; Specijic Gravity: 0.95 at 20°C
(liquid); Vapor (Gas) Density: 2.3; Ratio of Specijic Heats of Vapor (Gas): 1.141; Latent Heat of
Vaporization: 140.5,78.03,3.265; Heat of Combustion: -7,950, -4,420, -185; Heat ofDecomposition:
Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Individual breathing
devices with air supply; neoprene gloves; protective clothing; eye protection; Symptoms Following
Exposure: Inhalation of concentrated gas will cause suffocation. Contact will liquid can damage eyes
because of low temperature. Frostbite may result from contact with liquid; General Treatment for
Exposure: INHALATION: remove to fresh air; use artificial respiration if necessary. EYES: get
medical attention promptly if liquid has entered eyes. SKIN: soak in lukewarm water (for frostbite);
Toxicity by Inhalation (Threshold Limit Value): Data not available; Short-Tenn Exposure Limits: Data
not available; Toxicity by Ingestion: Not pertinent (boils at -24.7”C); Late Toxicity: Data not available;
Vapor (Gas) Irritant Characteristics: Data not available; Liquid or Solid Irritant Characteristics: Data
not available; Odor Threshold: Data not available.
Fire Hazards - Flash Point : Not pertinent; Flammuble Limits in Air (%): 3.7 - 18; Fire Extinguishing
Agents: Shut off gas source; use water to cool adjacent combustibles; Fire Extinguishing Agents Not
to be Used: Data not available; Special Hazards of Combustion Products: Irritating hydrogen fluoride
fumes may form in fire; Behavior in Fire: Containers may explode. Vapors are heavier than air And
may travel a considerable distance; Ignition Temperature : Data not available; Electrical Hazard: Data
not available; Burning Rate: Not pertinent.
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.

DIFLUOROPHOSPHORIC ACID, ANHYDROUS
Chemical Designations - Synonym: Difluorophosphorus Acid; Chemical Formula: HOPOF,.
Observable Characteristics - Physical State (as normally shipped): Liquid; Color: Colorless; Odor:
Sharp, very irritating.
Physical and Chemical Properties - Physical State at 15 “c and I atm. : Liquid; Molecular Weight:
103.0; Boiling Point at I am.: 241, 116, 389; Freezing Point: -139, -95, 178; Critical Temperature:
Not pertinent; Critical Pressure: Not pertinent; Specijic Gravity: 1.583 at 25°C (liquid); Vapor (Gas)
Density: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Latent Heat of
Vaporization: 140,77,3.2; Heat of Combustion: Not pertinent; Heat ofDecomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Air line mask or self-
contained breathing apparatus; full protective clothing; Symptoms Following Exposure: Inhalation
causes severe irritation of upper respiratory tract. Contact with liquid causes severe irritation of eyes
and skin. Ingestion causes severe burns of mouth and stomach; General Treatment for Exposure: Get
medical exposure attention as soon as possible following exposures to this compound. INHALATION
remove victim from exposure and support respiration. EYES: wash with copious volumes of water for
at least 15 min. INGESTION: if victim is conscious, have him drink large amounts of water followed
by milk or milk of magnesia; Toxicity by Inhalation (ThresholdLimit Value): Data not available; Short-
Term Exposure Limits: Data not available; Toxicity by Ingestion: Data not available; Late Toxicity: Data
not available; Vapor (Gas) Im’tanf Characteristics: Vapors cause moderate irritation such that personnel
will find high concentrations’ unpleasant. The effect is temporary; Liquid or Solid Irritant
Characteristics: Severe skin irritant. Causes second- and third-degree bums on short contact and is very