ICSC 1089 - 2,3,4,6-TETRACHLOROPHENOL

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2,3,4,6-TETRACHLOROPHENOL	ICSC: 1089 (October 2005)
2,4,5,6-Tetrachlorophenol Phenol, 2,3,4,6-tetrachloro-

CAS #: 58-90-2

UN #: 2020

EC Number: 200-402-8

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use water spray, alcohol-resistant foam, dry powder, carbon dioxide.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Shortness of breath. Convulsions.	Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	MAY BE ABSORBED! Redness.	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.	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. Wash hands before eating.	Give a slurry of activated charcoal in water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: chemical protection suit and 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.	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 food and feedstuffs. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs.

2,3,4,6-TETRACHLOROPHENOL

ICSC: 1089

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance BROWN SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR. Physical dangers Chemical dangers Decomposes on heating. This produces corrosive fumes including hydrogen chloride.	Formula: C₆H₂Cl₄O Molecular mass: 231.9 Melting point: 70°C Density: 1.8 g/cm³ Solubility in water, g/100ml at 20°C: 0.1 (very poor) Flash point: 100°C Octanol/water partition coefficient as log Pow: 4.45

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
BROWN SOLID IN VARIOUS FORMS WITH CHARACTERISTIC ODOUR.

Physical dangers

Chemical dangers
Decomposes on heating. This produces corrosive fumes including hydrogen chloride.

Formula: C₆H₂Cl₄O
Molecular mass: 231.9
Melting point: 70°C
Density: 1.8 g/cm³
Solubility in water, g/100ml at 20°C: 0.1 (very poor)
Flash point: 100°C
Octanol/water partition coefficient as log Pow: 4.45

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation, 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 A harmful concentration of airborne particles can be reached quickly when dispersed. Effects of long-term or repeated exposure The substance may have effects on the liver. The substance may have effects on the skin. This may result in chloracne. See Notes.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, 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
A harmful concentration of airborne particles can be reached quickly when dispersed.

Effects of long-term or repeated exposure
The substance may have effects on the liver. The substance may have effects on the skin. This may result in chloracne. See Notes.

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish.

NOTES
2,3,4,6-Tetrachlorophenol is a polychlorophenol which, as a group, has been classified by IARC (1999) as possibly carcinogenic to humans, but the data on this specific substance are inconclusive. 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 in central nervous system. 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

2,3,4,6-Tetrachlorophenol is a polychlorophenol which, as a group, has been classified by IARC (1999) as possibly carcinogenic to humans, but the data on this specific substance are inconclusive.
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 in central nervous system.
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
Symbol: T, N; R: 25-36/38-50/53; S: (1/2)-26-28-37-45-60-61

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