International Chemical Safety Cards

2,5-DICHLOROPHENOL

ICSC: 0439

1-Hydroxy-2,5-dichlorobenzene
2,5-Dichlorohydroxybenzene
C₆H₄Cl₂O
Molecular mass: 163.0

ICSC #    0439
CAS #     583-78-8
RTECS # SK8600000
UN #        2020
May 06, 2010 Validated
Fa, rack 2005: TEC updated; 13903130, 13905 reselected;

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	water spray, foam, powder, carbon dioxide
EXPLOSION

EXPOSURE		STRICT HYGIENE! PREVENT DISPERSION OF DUST!
•INHALATION	Sore throat. Cough. Burning sensation.	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.	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

STORAGE

PACKAGING & LABELLING

Personal protection: Chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment.

Store in original container. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. Separated from oxidants , food and feedstuffs . Ventilation along the floor.

Do not transport with food and feedstuffs.
UN Hazard Class: 6.1
UN Packing Group: III
Signal: Warning
Excl mark
Harmful if swallowed
Causes skin irritation
Causes serious eye irritation
Toxic to aquatic life

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0439

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

2,5-DICHLOROPHENOL

ICSC: 0439

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PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
applies for the 2,4- isomer, but not data found for this one

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive fumes .

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is severely irritating to the eyes , the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
See Notes. nce is possibly carcinogenic to humans.

PHYSICAL
PROPERTIES

Boiling point at 99.2kPa: 211°C
Melting point: 59°C
Solubility in water, g/100 ml: 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

ENVIRONMENTAL
DATA

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

N O T E S

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. Also consult ICSC 0438 2,4-Dichlorophenol and 0440 3,5-Dichlorophenol.

ADDITIONAL INFORMATION

ICSC: 0439	2,5-DICHLOROPHENOL
(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.