2,4,5-T
C8H5Cl3O3 / C6H2Cl3OCH2COOH
Molecular mass: 255.5
ICSC # 0075
CAS # 93-76-5
RTECS # AJ8400000
UN # 3345
EC # 607-041-00-9
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible under specific conditions.
Liquid formulations containing organic solvents may be flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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Water spray, powder.
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Explosion
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Exposure
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See NOTES.
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PREVENT DISPERSION OF DUST!
AVOID Exposure OF (PREGNANT) WOMEN!
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•Inhalation
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Cough.
Sore throat.
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Local exhaust or breathing protection.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
Pain.
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Safety goggles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Diarrhoea.
Drowsiness.
Headache.
Nausea.
Vomiting.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Give a slurry of activated charcoal in water to drink.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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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.
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Provision to contain effluent from fire extinguishing.
Separated from food and feedstuffs.
Store in an area without drain or sewer access.
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Do not transport with food and feedstuffs.
Xn symbol
N symbol
R: 22-36/37/38-50/53
S: 2-24-60-61
UN Hazard Class: 6.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
WHITE
CRYSTALLINE POWDER
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
and
on burning
producing toxic and corrosive gasesincludingphosgene (see ICSC0007)andhydrogen 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).
OSHA PEL: TWA 10 mg/m3
NIOSH REL: TWA 10 mg/m3
NIOSH IDLH: 250 mg/m3 See: 93765
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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.
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Physical
Properties
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Decomposes below boiling point
Melting point: 153-158°C
Density: 1.80
g/cm3
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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
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Environmental
Data
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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.
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N O T E S
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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.
Transport Emergency Card: TEC (R)-61GT7-III
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ADDITIONAL INFORMATION
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ICSC: 0075
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(2,4,5-TRICHLOROPHENOXY) ACETIC ACID
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(C) IPCS, CEC, 1994
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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.
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