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MCPA(Chiptox,Dow MCP)Herbicide Profile 9/89 Page I of 6
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<br /> MCPA (Chiptox, Dow MCP) Herbicide Profile 9/89
<br /> EPA Pesticide Fact Sheet
<br /> Name of Chemical: MCPA
<br /> Reason for Issuance: REGISTRATION STANDARD (SRR)
<br /> Date Issued: SEP 22, 1989
<br /> Fact Sheet Number: 208
<br /> 1. DESCRIPTION OF CHEMICAL
<br /> +� - Generic name: 2-methyl-4-chlorophenoxyacetic acid, and its sodium
<br /> salt, esters and organic amines
<br /> - Common name: MCPA
<br /> - Trade names: ACME MCPA AMINE 4, AGRITOX, AGRO ONE, BORDERMASTER, BH
<br /> .� MCPA, CHIPTOX, DED-WEED, EMPAL, KILSEM, MEPHANAL, METHOXONE, PHOMENE,
<br /> RHONOX, and WEEDAR
<br /> - EPA Pesticide Chemical (Shaughnessy) Number:
<br /> MCPA acid - 030501
<br /> Sodium salt - 030502
<br /> Diethanolamine salt - 030511
<br /> Dimethylamine salt - 030516
<br /> Butoxyethyl Ester - 030553
<br /> Isobutyl Ester - 030562
<br /> Isooctyl Ester - 030563
<br /> Isopropyl Ester - 030566
<br /> - Chemical Abstracts Service (CAS) Number: MCPA acid - 94-74-6.
<br /> - Year of Initial Registration: 1973
<br /> - Pesticide Type: Herbicide
<br /> - Chemical Family: Phenoxy herbicides
<br /> - U.S. Registrant: Dow Chemical
<br /> 2. USE PATTERNS AND FORMULATIONS
<br /> Application sites
<br /> - Terrestrial food crop use on small grains
<br /> (wheat, oats, barley, rye) , peas, beans, pasture grasses,
<br /> grain sorghum, alfalfa and clovers.
<br /> - Terrestrial nonfood crop use on homelawns, ornamental turf,
<br /> ` flax, grass seed crops, noncrop areas pasture grasses,
<br /> rangeland grasses, and forestry.
<br /> - Aquatic food use on rice.
<br /> ----- ------
<br /> Formulations -----.Formulations
<br /> - Granular (MCPA acid and isooctyl ester) ; soluble concentrate/liquid
<br /> (sodium salt, diethanolamine salt, dimethylamine salt) ; Technical
<br /> (MCPA acid, Butoxyethyl ester, isooctyl ester) ; Formulation
<br /> Intermediate (Butyl ester, isobutyl ester, isopropyl ester,
<br /> dimethylamine salt, MCPA acid) ; Ready-To-Use (Dimethylamine salt) ; and
<br /> Emulsifiable Concentrate (Butoxyethyl ester, isooctyl ester) . There
<br /> are 117 federally registered products containing MCPA as an active
<br /> ingredient either by itself or itself or in combination with other
<br /> pesticides.
<br /> - Methods of application: Aerial and ground equipment, knapsack
<br /> sprayers, pressure and hose-end applicators, and lawn spreaders.
<br /> - Application rates: 0.2 - 3.0 lb active ingredient per acre.
<br /> - Mode of activity: MCPA is absorbed through both leaves and roots and
<br /> ` is readily translocated throughout the plant. MCPA stimulates nucleic
<br /> acid and protein synthesis affecting the activity of enzymes,
<br /> respiration and cell division. Broadleaf plants exhibit malformed
<br /> leaves, stems and roots.
<br /> r_
<br /> http://pmep.cce.comell.edu/profiles/herb-growthreg/fatty-alcohol-monuron/mcpa/herb-prof-mcpa.html 10/30/2003
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