ICSC 0075 - (2,4,5-TRICHLOROPHENOXY) ACETIC ACID

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

(2,4,5-TRICHLOROPHENOXY) ACETIC ACID

ICSC: 0075
_{April 2005}

2,4,5-T

CAS No: 93-76-5
RTECS No: AJ8400000
UN No: 3345
EC No: 607-041-00-9

C₈H₅Cl₃O₃ / C₆H₂Cl₃OCH₂COOH
Molecular mass: 255.5

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible under specific conditions. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Water spray, powder.
EXPLOSION

EXPOSURE	See NOTES.	PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN!
Inhalation	Cough. Sore throat.	Local exhaust or breathing protection.	Fresh air, rest.
Skin		Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Diarrhoea. Drowsiness. Headache. Nausea. Vomiting.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: P2 filter respirator for harmful particles. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment.	Xn Symbol N Symbol R: 22-36/37/38-50/53 S: (2-)24-60-61 UN Hazard Class: 6.1 UN Pack Group: III	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT7-III	Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Store in an area without drain or sewer access.

IMPORTANT DATA

Physical State; Appearance
WHITE CRYSTALLINE POWDER

Chemical dangers
The substance decomposes on heating and on burning producing toxic and corrosive gases including phosgene (see ICSC0007) and hydrogen chloride (see ICSC0163). The solution in water is a weak acid.

Occupational exposure limits
TLV: 10 mg/m³ as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2005).
MAK: (Inhalable fraction) 10 mg/m³; Peak limitation category: II(2); skin absorption (H); Pregnancy risk group: C; (DFG 2004).

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

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

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

Effects of long-term or repeated exposure
Animal tests show that this substance possibly causes toxicity to human reproduction or development. See Notes.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Decomposes below boiling point Melting point: 153-158°C Density: 1.80 g/cm³ Solubility in water, g/100 ml at 25°C: 0.03 Vapour pressure, Pa at 25°C: negligible Octanol/water partition coefficient as log Pow: 4	The substance is very 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.

NOTES

Temperature of decomposition unknown in literature.
Commercial products may contain toxic dioxin (see ICSC 1467 2,3,7,8-TCDD).
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.
The recommendations on this card also apply to salts of 2,4,5-Trichlorophenoxyacetic acid.
Esterone 245, Trioxone and Weedone are trade names.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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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.

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