Mecoprop

Synonyms

MCPP; (+)-alpha-(4-Chloro-2-methylphenoxy) propionic acid; (+-)-2-((4-Chloro-o-tolyl)oxy)propionic acid (8CI); 2-(2-Methyl-4-chlorophenoxy)propanoic acid; 2-(2-Methyl-4-chlorophenoxy)propionic acid; 2-(2-Methyl-4-chlorphenoxy)-propionsaeure [German]; 2-(4-Chloor-2-methyl-fenoxy)-propionzuur [Dutch]; 2-(4-Chlor-2-methyl-phenoxy)-propionsaeure [German]; 2-(4-Chloro-2-methylphenoxy)propanoic acid; 2-(4-Chloro-2-methylphenoxy)propionic acid; 2-(4-Chloro-2-tolyloxy)propionic acid; 2-(4-Chloro-o-tolyl)oxylpropionic acid; 2-(4-Chlorophenoxy-2-methyl)propionic acid; 2-(p-Chloro-o-tolyloxy)propionic acid; 2-MCPP; 2M 4KhP; 2M-4CP; 2M4KhP; 4-Chloro-2-methylphenoxy-alpha-propionic acid; Acide 2-(4-chloro-2-methyl-phenoxy)propionique [French]; Acido 2-(4-cloro-2-metil-fenossi)-propionico [Italian]; Anicon B; Anicon P; CMPP; Celatox CMPP; Chipco turf herbicide mcpp; Compitox; FBC CMPP; Iso-Cornox; Isocarnox; Kilprop; Kwas 4-chloro-2-metylofenoksypropionowy [Polish]; Kyselina 2-(4-chlor-2-methylfenoxy)propionova [Czech]; Liranox; MCPP; Mechlorprop; Mecomec; Mecopar; Mecopeop; Mecoper; Mecopex; Mecoturf; Mecprop; Mepro; Methoxone; Morogal; N.b. mecoprop; Okultin MP; Propionic acid, 2-(2-methyl-4-chlorophenoxy)-; Propionic acid, 2-(4-chloro-2-methylphenoxy); Proponex-plus; RD 4593; Rankotex; Runcatex; SYS 67 Mecmin; U 46 KV Fluid; Vi-Par; Vi-Pex; alpha-(2-Methyl-4-chlorophenoxy)propionic acid; [ChemIDplus] UN2765

Category

Herbicides, Chlorophenoxy

Description

Colorless to brown solid; [ICSC] Tan powder with lumps; [MSDSonline]

Sources/Uses

Used as selective post-emergence herbicide for control of broad-leaved weeds in wheat, barley, oats, herbage seed crops, grassland, under fruit trees and vines, and sport and ornamental turf; [HSDB] Mecoprop is a 50:50 ratio mixture of the R and S isomers of 2-(4-chloro-2-methylphenoxy)propanoic acid; Mecoprop is being replaced in the US by Mecoprop-p, which is the R isomer and the active isomer; [Reference #1]

Comments

A skin and eye irritant; [Hawley] A skin, eye, and respiratory tract irritant; Can be absorbed through skin; "Mecoprop is a chlorophenoxy-herbicide which, as a group, has been classified by IARC (1987) as possibly carcinogenic to humans, but the data on this specific substance are inconclusive." [ICSC] Causes increased liver enzymes in rat studiies; [Reference #1] An irritant; May cause serious eye injury; Can be absorbed through skin; [MSDSonline] See "2,4D." See "Mecoprop-p" and "Mecoprop dimethylamine salt."

Reference Link #1

Biomedical References

2.3E-06 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Phenoxy pesticide, solid, toxic."

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Processes

Industrial Processes with risk of exposure:

• Farming (Pesticides)