ICSC 0439 - 2,5-DICHLOROPHENOL

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2,5-DICHLOROPHENOL	ICSC: 0439 (May 2010)
2,5-Dichlorohydroxybenzene 1-Hydroxy-2,5-dichlorobenzene

CAS #: 583-78-8

UN #: 2020

EC Number: 209-520-4

	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, foam, powder, carbon dioxide.

STRICT HYGIENE! PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Sore throat. Cough. Burning sensation.	Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness. 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 face shield or eye protection in combination with breathing protection.	Rinse with plenty of water (remove contact lenses if easily possible). Refer for medical attention.
Ingestion	Sore throat. Burning sensation.	Do not eat, drink, or smoke during work.	Rinse mouth. Rest. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. 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 Harmful if swallowed Causes skin irritation Causes serious eye irritation Toxic to aquatic life Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: III
STORAGE
Store only in original container. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. Separated from oxidants and food and feedstuffs. Ventilation along the floor.
PACKAGING
Do not transport with food and feedstuffs. Marine pollutant.

2,5-DICHLOROPHENOL

ICSC: 0439

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS CRYSTALS WITH CHARACTERISTIC ODOUR. Physical dangers No data. Chemical dangers Decomposes on heating. This produces toxic and corrosive fumes including acid anhydrides and hydrogen chloride. Decomposes on burning. This produces toxic fumes including phosgene. Reacts with strong oxidants.	Formula: C₆H₄Cl₂O Molecular mass: 163 Boiling point at 99.2kPa: 211°C Melting point: 59°C Solubility in water, g/100ml: 0.2 (poor) Vapour pressure, Pa at 25°C: 7 Relative vapour density (air = 1): 5.6 Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00 Octanol/water partition coefficient as log Pow: 3.14

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS CRYSTALS WITH CHARACTERISTIC ODOUR.

Physical dangers
No data.

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes including acid anhydrides and hydrogen chloride. Decomposes on burning. This produces toxic fumes including phosgene. Reacts with strong oxidants.

Formula: C₆H₄Cl₂O
Molecular mass: 163
Boiling point at 99.2kPa: 211°C
Melting point: 59°C
Solubility in water, g/100ml: 0.2 (poor)
Vapour pressure, Pa at 25°C: 7
Relative vapour density (air = 1): 5.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Octanol/water partition coefficient as log Pow: 3.14

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 severely irritating to the eyes, skin and respiratory tract. Exposure could cause chloracne.	Inhalation risk A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. Effects of long-term or repeated exposure 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 severely irritating to the eyes, skin and respiratory tract. Exposure could cause chloracne.

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

Effects of long-term or repeated exposure
See Notes.

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is toxic to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal.

NOTES
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. The substance is combustible but no flash point is available in literature. See ICSCs 0438 and 0440.

ADDITIONAL INFORMATION

EC Classification

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