C8H5Cl3O3
255.5 g/mol
AgrochemicalWarning
2,4,5-trichlorophenoxyacetic acid
CAS93-76-5EC202-273-3
Category
Agrochemical
Compound Class
Organic Acid
Primary Use
selective herbicide for broad-leafed plants
2,4,5-Trichlorophenoxyacetic acid is a synthetic auxin and chlorophenoxy acetic acid herbicide that was developed in the late 1940s for defoliation and selective control of broad-leafed plants. It was widely used in agriculture until toxicity concerns, particularly contamination with dioxins, led to its phase-out starting in the late 1970s.
selective herbicide for broad-leafed plantsdefoliant in agriculture
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:Rotterdam PIC
CAS 93-76-5
Related Compounds
ReferenceSame Category
2,4,5-t-isopropyl
CAS93-78-7
Herbicide active ingredient
ReferenceSame Category
2,4,5-T-butyl
CAS93-79-8
herbicide for crops and industrial areas
ReferenceSame Category
2,3,5,6-tetrachlorophenol
CAS935-95-5
Fungicide
ReferenceSame Category
Pyrazosulfuron-ethyl
CAS93697-74-6
herbicide active ingredient
Referencestereoisomer of
2,4,5-Trichlorophenoxyacetic acid-d4
CAS358731-37-0
deuterated herbicide reference standard
Related Reading
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H312Harmful in contact with skin
H360May damage fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
H373May cause damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for 2,4,5-trichlorophenoxyacetic acid (CAS 93-76-5) is 2918.91, 3808.59.
HS code (international, 6-digit)
2918.91, 3808.59
EU CN code (8-digit)
2918 91 00, 3808 59 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-(2,4,5-trichlorophenoxy)acetic acid
InChIKey
SMYMJHWAQXWPDB-UHFFFAOYSA-N
SMILES
C1=C(C(=CC(=C1Cl)Cl)Cl)OCC(=O)O
Synonyms (76)
- F52
- VEON
- 2,4,5-T
- 2,4,5-T acid
- 2,4,5-T, PESTANAL(R)
- 2,5-T
- Arbokan
- BCF-Bushkiller
- Brush Killer
- Brush RHAP
- Brushtox
- Crossbow
- Debroussaillant concentre
- Decamine 4T
- Ded-weed brush killer
- Envert-T
- Estercide t-2 and t-245
- Esteron 245
- Esteron 245 be
- Farmco fence rider
- Fence rider
- Forron
- Forst U 46
- Fortex
- Fruitone A
- Inverton 245
- Line rider
- Lo-vol
- Phortox
- Reddon
- Reddox
- Spontox
- Super D weedone
- T-Nox
- Tippon
- Tippontormona
- Trichlorophenoxyacetic acid
- Trioxon
- Trioxone
- U 46
- Veon 245
- Verton 2T
- Visko Rhap
- Visko rhap low volatile ester
- Weedone 2,4,5-T
- Weedone 2,5-T