1-Chloro-1,1-difluoroethane
HCFC 142 b
C2H3ClF2 / CH3CClF2
Molecular mass: 100.5
(cylinder)
ICSC # 0643
CAS # 75-68-3
RTECS # KH7650000
UN # 2517
|
|
Types of Hazard/ Exposure
|
Acute Hazards/ Symptoms
|
Prevention
|
First Aid/
Fire Fighting
|
|
FIRE
|
Extremely flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
|
NO open flames, NO sparks, and NO smoking.
|
Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out; in other cases extinguish with
water spray.
|
|
Explosion
|
Gas/air mixtures are explosive.
|
Closed system, ventilation, explosion-proof electrical equipment and lighting.
|
In case of fire: keep cylinder cool by spraying with water.
Combat fire from a sheltered position.
|
|
|
|
Exposure
|
|
|
|
|
•Inhalation
|
Drowsiness.
Suffocation. (See Notes).
|
Ventilation.
|
Fresh air, rest.
Artificial respiration if indicated.
Refer for medical attention.
|
|
•Skin
|
ON CONTACT WITH LIQUID: FROSTBITE.
|
Cold-insulating gloves.
|
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes.
Refer for medical attention.
|
|
•Eyes
|
See Skin.
|
Safety goggles,
or eye protection in combination with breathing protection.
|
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
|
|
•Ingestion
|
|
|
|
|
Spillage Disposal
|
Storage
|
Packaging & Labelling
|
Evacuate danger area!
Consult an expert!
Ventilation.
Remove all ignition sources.
NEVER direct water jet on liquid.
(Extra personal protection: chemical protection suit including self-contained breathing apparatus).
|
Fireproof.
Cool.
|
UN Hazard Class: 2.1
|
|
|
|
Important Data
|
Physical State; Appearance:
COLOURLESS COMPRESSED LIQUEFIED GAS.
Physical Dangers:
The gas is heavier than air
and may travel along the ground; distant ignition possible,
and may accumulate in low ceiling spaces causing deficiency of oxygen.
Chemical Dangers:
The substance decomposes
on burning
producing toxic and corrosive gases including hydrogen chloride and hydrogen fluoride.
Reacts violently with oxidants
causing fire hazard.
Occupational Exposure Limits:
TLV not established.
MAK: 1000 ppm, 4200 mg/m3,
Peak limitation category: II(8) : Pregnancy risk group: D
(DFG 2006).
|
Routes of Exposure:
The substance can be absorbed into the body
by inhalation.
Inhalation Risk:
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.
Effects of Short-Term Exposure:
Rapid evaporation of the liquid may cause frostbite.
The substance may cause effects on the cardiovascular system.
Effects of Long-Term or Repeated Exposure:
|
|
Physical
Properties
|
Boiling point: -9°C
Melting point: -131°C
Relative density (water = 1): 1.1
Solubility in water, g/100 ml at 25°C: 0.19
Vapour pressure, kPa at 25°C: 337
|
Relative vapour density (air = 1): 3.5
Flash point: Flammable Gas
Auto-ignition temperature: 632°C
Explosive limits, vol% in air: 6.2 - 17.9
Octanol/water partition coefficient as log Pow: 1.6
|
|
Environmental
Data
|
Avoid release to the environment in circumstances different to normal use.
|
|
N O T E S
|
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.
Check oxygen content before entering area.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Freon 142B, Genetron 142B, Isotron 142B are trade names.
Transport Emergency Card: TEC (R)-20G41
NFPA Code: H; F4; R0.
Card has been partially updated in August 2007: see Occupational Exposure Limits.
|
|
|
ADDITIONAL INFORMATION
|
|
|
|
ICSC: 0643
|
CHLORODIFLUOROETHANE
|
|
(C) IPCS, CEC, 1994
|
|
|
IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
|
|
|