ICSC 0573 - 2,3,5,6-TETRACHLOROPHENOL

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2,3,5,6-TETRACHLOROPHENOL	ICSC: 0573 (September 1997)
Phenol, 2,3,5,6-tetrachloro- 2,3,5,6-Tetrachlorohydroxybenzene

CAS #: 935-95-5

UN #: 2020

EC Number: 213-310-8

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. See Notes.	Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Dry skin. Redness. Burning sensation. Pain.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .
Eyes	Redness. Pain.	Wear safety goggles or eye protection in combination with breathing protection if powder.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Abdominal pain. Diarrhoea. Headache. Dizziness. Vomiting. Weakness. Convulsions. Muscle spasms. Fever. Sweating. See Notes.	Do not eat, drink, or smoke during work.	Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: III
STORAGE
Provision to contain effluent from fire extinguishing. Separated from strong oxidants and food and feedstuffs.
PACKAGING
Do not transport with food and feedstuffs. Marine pollutant.

2,3,5,6-TETRACHLOROPHENOL

ICSC: 0573

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance BROWN CRYSTALS WITH CHARACTERISTIC ODOUR. Physical dangers Chemical dangers Decomposes on heating and on contact with strong oxidants. This produces toxic and corrosive fumes of hydrogen chloride. The substance is a weak acid.	Formula: C₆H₂Cl₄O Molecular mass: 231.9 Decomposes at 288°C Melting point: 115°C Relative density (water = 1): 1.6 (60°C) Solubility in water: poor Vapour pressure, Pa at 100°C: 130 Relative vapour density (air = 1): 8.0 Octanol/water partition coefficient as log Pow: 3.9

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
BROWN CRYSTALS WITH CHARACTERISTIC ODOUR.

Physical dangers

Chemical dangers
Decomposes on heating and on contact with strong oxidants. This produces toxic and corrosive fumes of hydrogen chloride. The substance is a weak acid.

Formula: C₆H₂Cl₄O
Molecular mass: 231.9
Decomposes at 288°C
Melting point: 115°C
Relative density (water = 1): 1.6 (60°C)
Solubility in water: poor
Vapour pressure, Pa at 100°C: 130
Relative vapour density (air = 1): 8.0
Octanol/water partition coefficient as log Pow: 3.9

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. Effects of short-term exposure The substance is irritating to the eyes, skin and respiratory tract. See Notes.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of long-term or repeated exposure Repeated or prolonged contact with skin may cause dermatitis.

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. See Notes.

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis.

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment.

NOTES
No data are available on this isomer but a mixture of tetrachlorophenols may cause irritation of the skin, eyes and respiratory tract. These substances may cause acute metabolic effects resulting in damage in several organs notably CNS. Some technical products may contain highly toxic impurities including polychlorinated dibenzo-p-dioxins and furans. Depending on the degree of exposure, periodic medical examination is suggested.

NOTES

No data are available on this isomer but a mixture of tetrachlorophenols may cause irritation of the skin, eyes and respiratory tract.
These substances may cause acute metabolic effects resulting in damage in several organs notably CNS.
Some technical products may contain highly toxic impurities including polychlorinated dibenzo-p-dioxins and furans.
Depending on the degree of exposure, periodic medical examination is suggested.

ADDITIONAL INFORMATION

EC Classification

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