ICSC 1426 - DICHLOROACETYLENE

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DICHLOROACETYLENE	ICSC: 1426 (October 2001)
Dichloroethyne

CAS #: 7572-29-4

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Gives off irritating or toxic fumes (or gases) in a fire. Vapour/air mixtures are explosive. Explosive.	NO open flames, NO sparks and NO smoking. NO contact with acids or oxidizing agents. NO contact with hot surfaces. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT expose to friction or shock.	Use water spray, foam, carbon dioxide. Combat fire from a sheltered position. In case of fire: keep cylinder cool by spraying with water.

STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Headache. Nausea. Vomiting. Sore throat. Dizziness. Facial paralysis, numbness and tremor.	Use closed system or ventilation.	Fresh air, rest. Refer for medical attention.
Skin		Protective gloves.	Rinse and then wash skin with water and soap.
Eyes	Redness.	Wear 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 refer for medical attention.
Ingestion	Abdominal pain. Further see Inhalation.	Do not eat, drink, or smoke during work.	Refer for medical attention . Rinse mouth.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Remove all ignition sources. Do NOT wash away into sewer. Personal protection: filter respirator for organic vapours of low boiling point adapted to the airborne concentration of the substance.	According to UN GHS Criteria Transportation UN Classification
STORAGE
Fireproof. Separated from strong acids and oxidants. Cool. Well closed. Keep in a well-ventilated room.
PACKAGING
Airtight.

DICHLOROACETYLENE

ICSC: 1426

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance OILY LIQUID WITH CHARACTERISTIC ODOUR. Physical dangers Chemical dangers May decompose explosively on shock, friction or concussion. May explode on heating. Decomposes on heating. This produces toxic fumes including chlorine. Reacts violently with oxidants and acids.	Formula: C₂Cl₂ Molecular mass: 94.9 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

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
OILY LIQUID WITH CHARACTERISTIC ODOUR.

Physical dangers

Chemical dangers
May decompose explosively on shock, friction or concussion. May explode on heating. Decomposes on heating. This produces toxic fumes including chlorine. Reacts violently with oxidants and acids.

Formula: C₂Cl₂
Molecular mass: 94.9
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

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour. Effects of short-term exposure The substance may cause effects on the nervous system and kidneys. This may result in tissue lesions, impaired functions and kidney impairment.	Inhalation risk A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour.

Effects of short-term exposure
The substance may cause effects on the nervous system and kidneys. This may result in tissue lesions, impaired functions and kidney impairment.

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

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.1 ppm as STEL; A3 (confirmed animal carcinogen with unknown relevance to humans). MAK: carcinogen category: 2

ENVIRONMENT

NOTES
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.

NOTES

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

EC Classification
Symbol: E, Xn; R: 2-40-48/20; S: (2)-36/37

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