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2,4,5-TRICHLOROPHENOL ICSC: 0879
March 1998
2,4,5-TCP
1-Hydroxy-2,4,5-trichlorobenzene

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CAS # 95-95-4 C 6H 3Cl 3O / C 6H 2Cl 3(OH)
RTECS # SN1400000 Molecular mass: 197.5
UN # 2020
EC # 604-017-00-X

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID /    FIRE FIGHTING   
FIRE Combustible under specific conditions. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames. NO contact with strong oxidants.
Water spray, powder.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough.
Local exhaust or breathing protection.
Fresh air, rest.
Skin Redness. Pain.
Protective gloves. Protective clothing.
First rinse with plenty of water, then remove contaminated clothes and rinse again. Refer for medical attention.
Eyes Redness. Pain. Blurred vision.
Safety goggles, face shield, 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 take to a doctor.
Ingestion Abdominal pain. Diarrhoea. Dizziness. Headache. Vomiting. Fatigue. Sweating.
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment (extra personal protection: A/P2 filter respirator for organic vapour and harmful dust).
Xn Symbol
N Symbol
R: 22-36/38-50/53
S: 2-26-28-60-61
UN Hazard Class: 6.1
UN Pack Group: III
Do not transport with food and feedstuffs. Marine pollutant.

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-804
Separated from strong oxidants, food and feedstuffs.

IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS OR GREY FLAKES , WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
May explode on heating to decomposition. The substance decomposes on heating and on contact with strong oxidants producing toxic and irritating fumes (chlorine, hydrochloric acid). The substance is a weak acid. Reacts in an alkaline medium at high temperatures producing highly toxic chlorinated dioxins.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established. MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and through the skin and by ingestion.

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver and kidneys. This substance is possibly carcinogenic to humans (see Notes).

PHYSICAL PROPERTIES
Boiling point: 253°C
Melting point: 67°C
Density: 1.68 g/cm 3
Solubility in water, g/100 ml at 25°C: 0.1
Vapour pressure, Pa at 25°C: 2.9
Octanol/water partition coefficient as log Pow: 3.7

ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. Avoid release to the environment in circumstances different to normal use.

NOTES
Technical products may contain highly toxic impurities such as polychlorinated dibenzodioxins and dibenzofurans. The substance is combustible but no flash point is available in literature. Depending on the degree of exposure, periodic medical examination is indicated. If the substance is formulated with solvent(s) also consult the card(s) (ICSC) of the solvent(s). Carrier solvents used in commercial formulations may change physical and toxicological properties. Caswell No. 879, Collunosol, Dowicide 2, NCI-C61187, Nurelle, Preventol I are trade names. Also consult ICSC # 0588 - 2,3,4-trichlorophenol, 0589 - 2,3,5-trichlorophenol, ICSC # 0590 - 2,3,6-trichlorophenol and ICSC # 1122 - 2,4,6-trichlorophenol.

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

© IPCS 1999
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.



Updated by AS. Approved by EC. Last update: 10.10.2000.