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NIOSH

1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE

ICSC: 1421

1,2-Difluoro-1,1,2,2-tetrachloroethane
CFC-112
Fluorocarbon 112
C2Cl4F2 / Cl2FCCCl2F
Molecular mass: 203.8
ICSC # 1421 		CAS # 76-12-0
RTECS # KI1420000
November 27, 2003 Validated

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 Redness.
Protective gloves.
Rinse and then wash skin with water and soap.
•EYES Redness.
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.

ICSC: 1421 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

1,1,2,2-TETRACHLORO-1,2-DIFLUOROETHANE

ICSC: 1421

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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 , including hydrogen chloride hydrogen fluoride and phosgene . Reacts with alkali metals powdered magnesium, aluminium and zinc . Attacks plastic , rubber and coatings

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 50 ppm as TWA; (ACGIH 2008).
MAK: 200 ppm, 1700 mg/m3;
Peak limitation category: II(2); Pregnancy risk group: D);
(DFG 2008).
OSHA PEL: TWA 500 ppm (4170 mg/m3)
NIOSH REL: TWA 500 ppm (4170 mg/m3)
NIOSH IDLH: 2000 ppm See: 76120


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.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is mildly irritating to the eyes , the respiratory tract and the skin . 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: 93°C
Melting point: 26°C
Density: 1.65
g/cm3
Solubility in water, g/100 ml: 0.012
Vapour pressure, kPa at 20°C: 5.3
Relative vapour density (air = 1): 7.0

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. Freon 112 is a trade name.

ADDITIONAL INFORMATION



ICSC: 1421 1,1,2,2-TETRACHLORO-1,2-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.
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