ICSC 1096 - HEXACHLOROCYCLOPENTADIENE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

HEXACHLOROCYCLOPENTADIENE

ICSC: 1096
_{October 2005}

1,2,3,4,5,5-Hexachloro-1,3-cyclopentadiene
Perchlorocyclopentadiene

CAS No: 77-47-4
RTECS No: GY1225000
UN No: 2646
EC No: 602-078-00-7

C₅Cl₆
Molecular mass: 272.7

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		AVOID ALL CONTACT!	IN ALL CASES CONSULT A DOCTOR!
Inhalation	Cough. Sore throat. Headache. Diarrhoea. Dizziness. Nausea. Vomiting. Laboured breathing.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	MAY BE ABSORBED! Redness. Pain. Skin burns.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes	Redness. Pain. Blurred vision. Severe deep burns.	Face shield 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. Burning sensation. Shock or collapse. (Further see Inhalation).	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable plastic containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place.	T+ Symbol N Symbol R: 22-24-26-34-50/53 S: (1/2-)25-39-45-53-60-61 UN Hazard Class: 6.1 UN Pack Group: I

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-61S2646 or 61GT1-I	Store in an area without drain or sewer access. Dry. Well closed. Ventilation along the floor.

IMPORTANT DATA

Physical State; Appearance
OILY YELLOW TO GREEN LIQUID, WITH PUNGENT ODOUR.

Physical dangers
The vapour is heavier than air.

Chemical dangers
The substance decomposes on heating producing toxic and corrosive fumes including hydrogen chloride and phosgene. Reacts with moist air to produce hydrogen chloride (see ICSC0163). Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001) in the presence of water.

Occupational exposure limits
TLV: 0.01 ppm as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK: IIb (not established but data is available); skin absorption (H); (DFG 2005).

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

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

Effects of short-term exposure
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of the substance may cause lung oedema (see Notes). The substance may cause effects on the kidneys and liver, resulting in tissue lesions. The effects may be delayed. Medical observation is indicated.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 239°C Melting point: -9°C Relative density (water = 1): 1.7 Solubility in water, g/100 ml at 25°C: 0.2 Vapour pressure, Pa at 20°C: 10.7 Relative vapour density (air = 1): 9.4 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Octanol/water partition coefficient as log Pow: 4-5	The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish. The substance may cause long-term effects in the aquatic environment.

NOTES

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.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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