This invention relates to the application of a stabilizer for preventing or inhibiting discoloration in
amide herbicide formulations and the herbicide itself, belonging to the field of
pesticide formulation technology. The stabilizer is
epichlorohydrin and / or BHT; the application involves using the stabilizer in
amide herbicide formulations to prevent or inhibit discoloration. The
amide technical grade is one or more of
acetochlor,
metolachlor,
butachlor, and propachlor. The amide herbicide comprises, by
mass fraction: 20%–90% amide
technical grade, 3%–30% emulsifier, 0.1%–2% stabilizer, and 1%–75%
solvent. This invention significantly improves color stability:
epichlorohydrin and BHT effectively inhibit the oxidative discoloration process of amide herbicides, allowing the
technical grade to maintain a golden-yellow appearance during storage under light, preventing it from turning red or purplish-red. Maintaining the integrity of
efficacy:
Epichlorohydrin and BHT act only on the oxidation pathway of impurities and do not interfere with the main active ingredients of amide herbicides (such as
acetochlor and
butachlor), ensuring that the weeding effect is not affected.