1,1,1,2-Tetrafluoroethane

  • HFC 134A
  • Norflurane
Formula
F3CCH2F
Structure
Description
A colorless gas with a slight ethereal odor.
Uses
refrigeration agents; air conditioning agents; foaming agents

Registry Numbers and Inventories.
CAS
811-97-2
EC (EINECS/ELINCS)
212-377-0
RTECS
KI8842500
RTECS class
Tumorigen; Reproductive Effector
UN (DOT)
3159
Merck
13,4734
Beilstein/Gmelin
1733199
Beilstein Reference
4-01-00-00123
EPA OPP
100895
Swiss Giftliste 1
G-129269
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2H2F4
Formula mass
102.03
Boiling point, °C
-26.2
Vapor pressure, mmHg
4730
Vapor density (air=1)
3.18
Critical temperature
102
Critical pressure
40.07
Density
1.2076 g/cm3 (25 C)
Solubility in water
1.5 g/L
Viscosity
205 cp (25 C)
Surface tension
4.4 g/s2 (54.9 C)
Partition coefficient, pKow
1.274
Heat of vaporization
20.7 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and flame. Store in a cool, dry place. Do not store in direct sunlight.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with skin and eyes. Do not get on skin or in eyes.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb the liquid and scrub the area with detergent and water.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Alkali and alkaline earth metals, powdered aluminum, zinc, magnesium and beryllium.
Decomposition
Hydrofluoric acid, carbonyl fluoride.

Fire.
Flash Point,°C
-79
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam.
Fire potential
May burn but does not ignite readily.
Hazards
Containers may explode when heated. Ruptured cylinders may rocket.
Combustion products
All fluorocarbons will undergo thermal decomposition when exposed to flame or red-hot metal.

Health.
Poison_Class
-
Exposure effects
Headache, dizziness, and disorientation are common. Cerebral edema may be found on autopsy. Dichlorodifluoromethane was not teratogenic in rats and rabbits. <br>The reproductive effects of 1,1,1,2-tetrafluoroethane were studied in rats. No adverse effects on reproductive performance was noted or on the development, maturation or reproductive performance of up to two successive generations.
   Ingestion
Aspiration hazard. May cause irritation of the digestive tract.
   Inhalation
Vapor reduces oxygen available for breathing. May cause dyspnea (difficult breathing from shortness of breath).
   Skin
May cause frostbite.
   Eyes
Not available. Contact with liquid may cause severe tissue damage because of frostbit e.

First aid
 
   Ingestion
Do NOT induce vomiting. Get medical aid.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid if irritation develops or persists. Treat for frostbite.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
3159
Response guide
Hazard class
2.2
36. Halogenated hydrocarbons
Std. Transport #
4904304