Aceticacid, 2-(4-chloro-2-methylphenoxy)- 94-74-6 CAS NO.94-74-6

2-methyl-4-chlorophenoxyacetic acid basic information
product name: 2-methyl-4-chlorophenoxyacetic acid
synonyms: 2-(4-chloro-2-methylphenoxy)acetic acid;2-methyl-4-chlorophenoxyacetic acid;2m-4kh;agritox;agroxone;agroxone(r);agricorn;4-chloro-o-cresoxyacetic acid
cas: 94-74-6
mf: c9h9clo3
mw: 200.62
einecs: 202-360-6
product categories: stain blocker;herbicide;agro-products;aromatics;isotope labelled compounds;building blocks;c9;carbonyl compounds;carboxylic acids;chemical synthesis;organic building blocks
mol file: 94-74-6.mol
2-methyl-4-chlorophenoxyacetic acid structure
2-methyl-4-chlorophenoxyacetic acid chemical properties
melting point 114-118 °c(lit.)
fp 2 °c
storage temp. approx 4°c
merck 5764
cas database reference 94-74-6(cas database reference)
nist chemistry reference [(4-chloro-o-tolyl)oxy]acetic acid(94-74-6)
epa substance registry system acetic acid, (4-chloro-2-methylphenoxy)- (94-74-6)
safety information
hazard codes xn,f,n
risk statements 22-38-41-36-20/21/22-11-50/53
safety statements 26-37-39-36-16-61-60-36/37
ridadr un 2765
wgk germany 2
rtecs ag1575000
hazardous substances data 94-74-6(hazardous substances data)
msds information
provider language
sigmaaldrich english
2-methyl-4-chlorophenoxyacetic acid usage and synthesis
usage labelled mcpa (c369470). herbicide.
definition chebi: a chlorophenoxyacetic acid that is (4-chlorophenoxy)acetic acid substituted by a methyl group at position 2.
general description colorless plates. corrosive. practically insoluble in water. used as an herbicide.
air & water reactions insoluble in water.
reactivity profile 2-methyl-4-chlorophenoxyacetic acid is a chlorinated benzoic acid derivative. reacts as a weak acid to neutralize bases, both organic (for example, the amines) and inorganic. may corrode iron, steel, and aluminum parts and containers if moist. reacts with cyanide salts in the presence of moisture to generate gaseous hydrogen cyanide. may react if moist with sulfites, nitrites, thiosulfates (to give h2s and so3), dithionites (so2), to generate flammable and/or toxic gases and heat. can be oxidized by strong oxidizing agents and reduced by strong reducing agents. these reactions generate heat. a variety of products is possible. like other acids, may initiate polymerization reactions or catalyze other reactions. is a chlorinated carboxylic acid herbicide. carboxylic acids donate hydrogen ions if a base is present to accept them. they react in this way with all bases, both organic (for example, the amines) and inorganic. their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. neutralization between an acid and a base produces water plus a salt. carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water. soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. the ph of solutions of carboxylic acids is therefore less than 7.0. carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 2-methyl-4-chlorophenoxyacetic acid to corrode or dissolve iron, steel, and aluminum parts and containers. carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. the reaction is slower for dry, solid carboxylic acids. insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give h2s and so3), dithionites (so2), to generate flammable and/or toxic gases and heat. their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. these reactions generate heat. a wide variety of products is possible. like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.
2-methyl-4-chlorophenoxyacetic acid preparation products and raw materials
raw materials phenol-->chloroacetic acid-->o-cresol-->4-chloro-2-methylphenol