Production Methods
Mecoprop-sodium 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 sodium hydroxide under controlled pH and temperature, ensuring complete conversion to the sodium salt while preventing degradation or unwanted ester formation. Once neutralisation reaches the target stoichiometry, the resulting aqueous mecoprop-sodium solution is filtered to remove any insoluble residues, adjusted for active-ingredient concentration, and standardized for pH and density.
