1,1-Difluoro-1,2,2,2-tetrachloroethane
CFC-112a
C2Cl4F2 / ClF2CCCl3
Molecular mass: 203.8
ICSC # 1420
CAS # 76-11-9
RTECS # KI1425000
|
|
Types of Hazard/ Exposure
|
Acute Hazards/ Symptoms
|
Prevention
|
First Aid/
Fire Fighting
|
|
FIRE
|
Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
|
|
In case of fire in the surroundings: use appropriate extinguishing media.
|
|
Explosion
|
|
|
|
|
|
|
Exposure
|
|
|
|
|
•Inhalation
|
Cough.
Sore throat.
Laboured breathing.
Shortness of breath.
Cardiac arrhythmia.
Confusion.
Drowsiness.
Unconsciousness.
|
Ventilation, local exhaust, or breathing protection.
|
Fresh air, rest.
Half-upright position.
Artificial respiration may be needed.
Refer for medical attention.
See Notes.
|
|
•Skin
|
|
Protective gloves.
|
Rinse and then wash skin with water and soap.
|
|
•Eyes
|
|
Safety spectacles.
|
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
|
|
•Ingestion
|
|
Do not eat, drink, or smoke during work.
|
Rinse mouth.
|
|
Spillage Disposal
|
Storage
|
Packaging & Labelling
|
Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Do NOT let this chemical enter the environment.
|
See Chemical Dangers.
Well closed.
|
|
|
|
|
Important Data
|
Physical State; Appearance:
COLOURLESS
TO WHITE
SOLID IN VARIOUS FORMS
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
On contact with hot surfaces or flames this substance decomposes forming toxic fumes includinghydrogen chloride,hydrogen fluorideandphosgene.
Reacts
with
alkali metals
, powdered
aluminium
, magnesium and
zinc
.
Attacks plastic, rubber and coatings.
Occupational Exposure Limits:
TLV: 500 ppm as TWA; (ACGIH 2003).
MAK: 1000 ppm, 8500 mg/m3
Peak limitation category: II(8);
(DFG 2003).
OSHA PEL: TWA 500 ppm (4170 mg/m3)
NIOSH REL: TWA 500 ppm (4170 mg/m3)
NIOSH IDLH: 2000 ppm See: 76119
|
Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour.
Inhalation Risk:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster.
Effects of Short-Term Exposure:
Inhalation of the substance at high levels may cause lung oedema (see Notes).
The substance may cause effects on the
cardiovascular system
and
central nervous system
, resulting in
cardiac disorders
and central nervous system depression.
Exposure could cause lowering of consciousness.
Effects of Long-Term or Repeated Exposure:
|
|
Physical
Properties
|
Boiling point: 91.5°C
Melting point: 40.6°C
Density: 1.65
g/cm3
at 25°C
Solubility in water:
none
|
Vapour pressure, kPa at 20°C: 5.3
Relative vapour density (air = 1): 7.0
Octanol/water partition coefficient as log Pow: 3.41
|
|
Environmental
Data
|
This substance may be hazardous in the environment; special attention should be given to its impact on the ozone layer.
|
|
N O T E S
|
|
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential.
|
|
ADDITIONAL INFORMATION
|
|
|
|
ICSC: 1420
|
1,1,1,2-TETRACHLORO-2,2-DIFLUOROETHANE
|
|
(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.
|
|
|