International Chemical Safety Cards

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

(2,4,5-TRICHLOROPHENOXY)ACETIC ACID
2,4,5-T
C8H5Cl3O3 / C6H2Cl3OCH2COOH
Molecular mass: 255.5
CAS # 93-76-5
RTECS # AJ8400000
ICSC # 0075
UN # 2765
EC # 607-041-00-9
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
PREVENT DISPERSION OF DUST! STRICT HYGIENE! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!

INHALATION Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
SKIN Redness. See Notes.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
EYES Redness.
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. Unconsciousness. Vomiting.
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
SPILLAGE DISPOSAL STORAGE 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 (extra personal protection: P2 filter respirator for harmful particles).
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs.
Do not transport with food and feedstuffs.
Xn symbol
R: 22-36/37/38
S: (2-)24
UN Hazard Class: 6.1
UN Packing Group: III
Marine pollutant.
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0075 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

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

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PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS CRYSTALLINE POWDER.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating and on burning producing toxic and corrosive gases including phosgene (see ICSC # 0007) and hydrogen chloride (see ICSC # 0163). The solution in water is a weak acid.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: ppm; 10 mg/m3 (as TWA) (ACGIH 1994-1995).


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

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

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


PHYSICAL
PROPERTIES
 Melting point: 153-158°C
Relative density (water = 1): 1.80
Solubility in water: none
 Vapour pressure, Pa at 25°C: negligible
Octanol/water partition coefficient as log Pow: 4
ENVIRONMENTAL
DATA
 Avoid release to the environment in circumstances different to normal use.
N O T E S
Temperature of decomposition unknown in literature. Commercial products may contain dioxin which may cause characteristic health effects (chloracne, liver changes). 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 esters of 2,4,5-Trichlorophenoxyacetic acid. Esterone 245, Trioxone and Weedone are trade names.
Transport Emergency Card: TEC (R)-61G43c
ADDITIONAL INFORMATION


ICSC: 0075 (2,4,5-TRICHLOROPHENOXY)ACETIC ACID
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.