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potassium 2-(4-chloro-2-methylphenoxy)propionate

CAS No.
1929-86-8
Chemical Name:
potassium 2-(4-chloro-2-methylphenoxy)propionate
Synonyms
MCPP,K-SALT;MECOPROP,POTASSIUMSALT;potassium 2-(4-chloro-2-methylphenoxy)propionate;Potassium α-(4-chloro-2-methylphenoxy)propionate;2-(2-Methyl-4-chlorophenoxy)propanoic acid potassium salt;2-(4-Chloro-2-methylphenoxy)-propionic acid potassium salt;Propanoic acid, 2-(4-chloro-2-methylphenoxy)-, potassium salt
CBNumber:
CB8876016
Molecular Formula:
C10H10ClKO3
Molecular Weight:
252.7359
MDL Number:
MOL File:
1929-86-8.mol
Last updated:2026-07-31 15:25:14

potassium 2-(4-chloro-2-methylphenoxy)propionate Properties

Boiling point 101.6℃ at 101.7kPa
Density 1.172 at 20℃
vapor pressure 21.07-29.06hPa at 20-25℃
LogP -1-2.65 at 20℃ and pH4-9
Surface tension 44.8mN/m at 413g/L and 20℃
FDA UNII 883N15854T
EPA Substance Registry System Mecoprop potassium salt (1929-86-8)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)Environment (GHS09)Corrosion (GHS05)
GHS07,GHS09,GHS05
Signal word  Danger
Hazard statements  H315-H410-H302-H318
Precautionary statements  P273-P391-P501-P264-P280-P302+P352-P321-P332+P313-P362-P264-P270-P301+P312-P330-P501-P280-P305+P351+P338-P310
REACH Registrations Active

potassium 2-(4-chloro-2-methylphenoxy)propionate Chemical Properties, Uses, Production

Production Methods

Mecoprop-potassium is produced through the same neutralisation-based industrial logic used for other alkali-metal salts of phenoxy herbicides, with the goal of generating a highly water-soluble, formulation ready active. The process begins with synthesis and purification of racemic mecoprop acid via the standard phenoxypropionate route. The purified acid is then dissolved or slurried in water and treated with potassium hydroxide under controlled pH and temperature, ensuring complete conversion to the potassium salt while preventing degradation or unwanted ester formation. Once neutralisation reaches the target stoichiometry, the resulting aqueous mecoprop-potassium solution is filtered to remove any insoluble residues, adjusted for active-ingredient concentration, and standardized for pH and density.

Mechanism of action

Selective, systemic, absorbed through leaves and translocated to roots. Synthetic auxin.

Pesticide Type

Herbicide

potassium 2-(4-chloro-2-methylphenoxy)propionate Preparation Products And Raw materials

Raw materials

Preparation Products

potassium 2-(4-chloro-2-methylphenoxy)propionate Suppliers

Global Suppliers ( 2)
Supplier Tel Email Country ProdList Advantage
Shaanxi DIDU pharmaceutical and Chemical Co., Ltd 029-029-81120477 17792793610 1033@dideu.com China 9990 58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. +8618950047208 ellena@amitychem.com China 43392 58
potassium 2-(4-chloro-2-methylphenoxy)propionate Propanoic acid, 2-(4-chloro-2-methylphenoxy)-, potassium salt MECOPROP,POTASSIUMSALT MCPP,K-SALT 2-(4-Chloro-2-methylphenoxy)-propionic acid potassium salt 2-(2-Methyl-4-chlorophenoxy)propanoic acid potassium salt Potassium α-(4-chloro-2-methylphenoxy)propionate 1929-86-8