2-Methyl-4-chlorophenoxyacetic acid

Public-database records for 2-Methyl-4-chlorophenoxyacetic acid (CAS 94-74-6), reproduced here for independent cross-checking.

Safety classification and hazard statements

Physical description and handling notes

• White solid; [Hawley] Slightly beige solid; [MSDSonline]
• WHITE CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR.
• White to light brown solid flakes, crystal powder or liquid.
• Plates from benzene or toluene
• White crystalline solid (pure compd)
• Colorless crystalline solid (pure)

Reported physical properties

How this substance is indexed

Documented uses

• Used as a post-emergence herbicide for control of annual and perennial broad leaved weeds in cereals, herbage seed crops, flax, rice, vines, peas, potatoes, asparagus, grassland, turf, orchards, roadsides, forestry, and aquatic areas; [HSDB]
• MCPA is used as a postemergence herbicide for control of broadleaf weeds in agricultural applications.
• HERBICIDE FOR CONTROL OF ANNUAL & PERENNIAL WEEDS
• Post-emergence control of annual and perennial broad leaved weeds (including thistles and docks) in cereals (alone or undersown), herbage seed crops, flax, rice, vines, peas, potatoes, asparagus, grassland, turf, under fruit trees, and on roadside verges and embankments. Control of broad-leaved and woody weeds in forestry. Control of aquatic broad leaved weeds.
• Dioxins occur as by-products from the manufacture of organochlorides, the bleaching of paper, chlorination by waste and drinking water treatment plants, municipal solid waste and industrial incinerators, and natural sources such as volcanoes and forest fires. (L177, L178)
• Herbicides, Transformation products

Names this substance appears under

MCPA; 94-74-6; 2-METHYL-4-CHLOROPHENOXYACETIC ACID; (4-Chloro-2-methylphenoxy)acetic acid; Zelan; Mephanac; Emcepan; Netazol; Rhonox; Herbicide M; Hedarex M; Hedonal M; Okultin M; Leuna M; Bordermaster; Hornotuho

Computed molecular descriptors

Database abstract

2-Methyl-4-chlorophenoxyacetic acid · CAS 94-74-6 · C9H9ClO3. UNII D888C394VO. 熔点: 118-119 °C; 熔点: 113-119 °C; 密度: 1.56 @ 25 °C/15.5 °C.

Source: PubChem / Wikidata; the batch COA governs where values differ.