C9H9ClO3
200.62 g/mol
AgrochemicalDanger
MCPA
CAS94-74-6EC202-360-6
Category
Agrochemical
Compound Class
Organic Acid
Primary Use
post-emergence phenoxy herbicide
MCPA is a widely used phenoxy herbicide, introduced in 1945, that selectively controls broad-leaf weeds in pasture and cereal crops. Its mode of action involves acting as an auxin, a type of plant growth hormone.
selective control of broad-leaf weeds in pastureselective control of broad-leaf weeds in cereal crops
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.
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Related Compounds
ReferenceSame Category
2,4-dichlorophenoxyacetic acid
CAS94-75-7
Systemic herbicide for weed control
ReferenceSame Category
2,4-D-butyl
CAS94-80-4
Herbicide for weed control
ReferenceSame Category
2,4-DB
CAS94-82-6
selective post-emergence broadleaf herbicide
ReferenceSame Category
4-Amino-3,5-dichloro-6-fluoro-2-pyridone
CAS94133-62-7
Agrochemical intermediate for fluroxypyr synthesis
Related Reading
Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H312Harmful in contact with skin
H332Harmful if inhaled
H411Toxic to aquatic life with long lasting effects
H316Causes mild skin irritation
H320Causes eye irritation
H330Fatal if inhaled
H361Suspected of damaging fertility or the unborn child
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for MCPA (CAS 94-74-6) is 2918.99.
HS code (international, 6-digit)
2918.99
EU CN code (8-digit)
2918 99 90
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-(4-chloro-2-methylphenoxy)acetic acid
InChIKey
WHKUVVPPKQRRBV-UHFFFAOYSA-N
SMILES
CC1=C(C=CC(=C1)Cl)OCC(=O)O
Synonyms (108)
- 2M-4C
- 4K-2M
- CMPA
- MCPA
- 2,4-MCPA
- 2M-4Ch
- 2M-4Kh
- 4-Chloro-o-cresoxyacetic acid
- Acme MCPA Amine 4
- Agricorn 500 II
- Agritox 50
- Agroxon
- Agroxone
- Albar-M
- Anicon M
- Anicon kombi
- Atlas MCPA
- B-Selektonon M
- BH Mcpa
- Banvel M
- Bordermaster
- Brominal M & plus
- Campbell's MCPA 25, 50
- Caswell No. 557C
- Cekherbex
- Chiptox
- Chwastox
- Chwastox 30
- Chwastox Extra
- Cornox
- Cornox-M
- Dicopur-M
- Dicotex
- Dikotes
- Dikotex
- Dow MCP amine weed killer
- Emcepan
- Empal
- FLUID 4
- HEDAPUR M
- Hedapur M 52
- Hedarex M
- Hedonal M
- Herbicide M
- Hormotuho
- Hornotuho
- Kilsem
- Krezone
- Legumex Extra
- Legumex db
- Leuna M
- Leyspray
- Linormone
- M 40
- MCPA (Standard)
- MCPA, PESTANAL(R)
- Mecaphar
- Mephanac
- Metaxon
- Netazol
- Okultin M
- Phenoxylene 50
- Phenoxylene plus
- Phenoxylene super
- Raphone
- Razol dock killer
- Rhomenc
- Rhomene
- Rhonox
- Selektonon M
- Seppic mmd
- Shamrox
- Trasan
- Ustinex
- Vacate
- Verdone
- Vesakontuho mcpa
- Weedar MCPA
- Weedone mcpa ester
- Zelan
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