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NIOSH

DICHLOROACETYLENE

ICSC: 1426

Dichloroethyne
C2Cl2
Molecular mass: 94.9
ICSC # 1426 		CAS # 7572-29-4
RTECS # AP1080000
EC # 602-069-00-8
October 17, 2001 Validated
Pi, Study (1st batch of chemical part)

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Explosive. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking. NO contact with acid(s) or oxidants. NO contact with hot surfaces.
Water spray, foam, carbon dioxide, NO dry chemical.
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT expose to friction or shock.
Combat fire from a sheltered position. In case of fire: keep cylinder cool by spraying with water.
EXPOSURE
STRICT HYGIENE!

•INHALATION Headache. Nausea. Vomiting. Sore throat. Dizziness. Facial paralysis, numbness and tremor.
Closed system and ventilation.
Fresh air, rest. Refer for medical attention.
•SKIN
Protective gloves.
Rinse and then wash skin with water and soap.
•EYES Redness.
Safety spectacles, 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 Abdominal pain. (Further see Inhalation).
Do not eat, drink, or smoke during work.
Refer for medical attention. Rinse mouth.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Remove all ignition sources. Do NOT wash away into sewer. (Extra personal protection: filter respirator for organic vapours of low boiling compounds.)
Fireproof. Separated from strong acids and oxidants. Cool. Well closed. Keep in a well-ventilated room.
Airtight.
E symbol
Xn symbol
R: 2-40-48/20
S: 2-36/37
ICSC: 1426 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.

DICHLOROACETYLENE

ICSC: 1426

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
OILY LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
May decompose explosively on shock, friction, or concussion. May explode on heating. The substance decomposes on heating producing toxic fumes including chlorine . Reacts violently with oxidants and with acids .

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (Ceiling value) 0.1 ppm A3 (ACGIH 2001).
MAK: Carcinogen category: 2 (DFG 2000).
OSHA PEL†: none
NIOSH REL: Ca C 0.1 ppm (0.4 mg/m3) See Appendix A
NIOSH IDLH: Ca N.D. See: IDLH INDEX


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour.

INHALATION RISK:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance may cause effects on the nervous system and kidneys , resulting in tissue lesions , impaired functions and kidney impairment .

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 32°C
(explodes)
Melting point: -66°C
Relative density (water = 1): 1.2
Solubility in water: none
Relative vapour density (air = 1): 3.3
Flash point: see Notes

ENVIRONMENTAL
DATA


N O T E S

The substance is combustible but no flash point is available in literature. Combustion in a confined space may turn into detonation. The occupational exposure limit value should not be exceeded during any part of the working exposure. The substance is not commercially available, but it is a decomposition product of trichlorethylene, trichloroethane and it is also a by-product of vinylidene chloride.

ADDITIONAL INFORMATION



ICSC: 1426 DICHLOROACETYLENE
(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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