85-34-7

Basic information

• Product Name: CHLORFENAC
• Synonyms: (2,3,6-trichlorophenyl)-aceticaci;(2,3,6-trichlorophenyl)ethanoicacid;2,3,6-tca;2,3,6-Trichlorobenzeneacetic acid;2,3,6-trichloro-benzeneaceticaci;2,3,6-trichlorobenzeneaceticacid;2,3,6-Trichlorphenylessigsaeure;2,3,6-trichlorphenylessigsaeure[german]
• CAS NO: 85-34-7
• Molecular Formula: C₈H₅Cl₃O₂
• Molecular Weight: 239.48
• EINECS: 201-599-3
• Product Categories: Alphabetic;F;FA - FL;Agro-Products;Aromatics;Intermediates & Fine Chemicals;Pharmaceuticals
• Mol File: 85-34-7.mol

Chemical Properties

• Melting Point: 161 °C
• Boiling Point: 341.55°C (rough estimate)
• Flash Point: 167.6 °C
• Appearance: /
• Density: 1.568
• Vapor Pressure: 1.32E-05mmHg at 25°C
• Refractive Index: 1.4521 (estimate)
• Storage Temp.: 0-6°C
• PKA: 3.63±0.10(Predicted)
• Water Solubility: 0.2g/L(28 oC)
• Merck: 13,2103
• BRN: 2113332
• CAS DataBase Reference: CHLORFENAC(CAS DataBase Reference)
• NIST Chemistry Reference: CHLORFENAC(85-34-7)
• EPA Substance Registry System: CHLORFENAC(85-34-7)

Safety Data

• Hazard Codes: N-Xn,N,Xn
• Statements: 51/53-22
• Safety Statements: 61-36-45-26
• RIDADR: 3077
• WGK Germany: 2
• RTECS: AJ8750000
• Hazardous Substances Data: 85-34-7(Hazardous Substances Data)

Usage

Uses

Used in Agriculture:
Chlorfenac is used as a herbicide for weed control, primarily in sugar canes but also in other crops. Its application helps to eliminate weeds that compete with the main crops for nutrients, sunlight, and space, thereby promoting the growth and yield of the desired plants.

Safety Profile

Moderately toxic by ingestion andskin contact. When heated to decomposition it emits toxicfumes of Clí. An herbicide used for preemergence seasonlongcontrol of weeds.

InChI:InChI=1/C8H5Cl3O2/c9-5-1-2-6(10)8(11)4(5)3-7(12)13/h1-2H,3H2,(H,12,13)/p-1

Upstream product

• 4960-48-9 2,3,6-trichlorobenzyl bromide 
• 2077-46-5 1,2,4-trichloro-3-methylbenzene 
• 3215-65-4 (2,3,6-trichlorophenyl)acetonitrile 

Downstream Products

• 21712-14-1 Tributylzinn-2,3,6-trichlorphenylacetat 
• 125314-22-9 3-(2,3,6-trichlorophenyl)-4-(1-methyl-3-indolyl)-1H-pyrrole-2,5-dione 

Relevant articles and documents

Method of manufacturing a dry water-soluble herbicidal salt composition

A method of manufacturing a solid, water-soluble herbicidal composition comprising a water-soluble salt of a herbicidal compound is disclosed. The herbicidal compound is a water-insoluble compound that includes a carboxylic acid functionality, such as a phenoxy-substituted carboxylic acid compound or a substituted benzoic acid compound, and is sufficiently pure to form a dry, solid herbicidal salt composition after interaction with a suitable neutralizing base, such as ammonia, an alkylamine, a dialkylamine, a trialkylamine, a hydroxyalkylamine, a dihydroxyalkylamine, an alkaline salt of an alkali metal or a combination thereof. The dry herbicidal salt composition includes at least about 90% by weight of the water-soluble herbicidal salt, and dissolves rapidly and essentially completely in water to form an aqueous herbicidal solution including up to about 75% by weight of the water-soluble herbicidal salt.

METABOLISM OF CHLOROPHENYLALANINES IN CROP AND WEED PLANTS IN RELATION TO THE FORMATION OF POTENTIAL HERBICIDAL END PRODUCTS

Metabolism of 12 synthetic D,L-chlorophenylalanines has been examined in several crop and weed plants.Twenty-five gram samples of excised shoots or leaves of bushbean, soybean, corn, pigweed, lambsquarters, and giant foxtail were allowed to metabolize 10-4 M solutions of the D,L-chlorophenylalanines for 24 hr in continuous light.The plant samples were then extracted in 80percent methanol and the soluble acidic metabolites fractionated into ether.Each ether concentrate was partially purified by fractional elution from a PrepSep C18 coloumn and then analysed by HPLC.Collected fractions were esterified with pentafluorobenzylbromide and examined by GC-MS to demonstrate the presence of PFB-esters of chlorophenylacetic, chlorobenzoic and/or chlorocinnamic acids.Since certain of these metabolites are known to be potent plant growth-regulators and herbicides, the results are discussed in relation to the potantial herbicidal action of certain chlorophenylalanines by the mechanism of 'lethal synthesis'.Key Word Index - Phaseolus vulgaris; Glycine max.; Leguminosae; Zea mays; Amaranthus retroflexus; Chenopodium album; Setaria faberii; metabolism; D,L-chlorophenylalanines; chlorophenylacetic acids; chlorobenzoic acids; chlorocinnamic acids; growth regulators.

Controlled release of bioactive materials using alginate gel beads

Alginate gel beads containing bioactive materials dispersed therein are the product and the process of this invention. These beads can be made to either float or sink in aqueous environments, and are capable of providing the controlled release of their bioactive materials when applied to terrestrial or aqueous environments.

Controlled release of bioactive materials using alginate gel beads

Alginate gel beads containing bioactive materials dispersed therein are the product and the process of this invention. These beads can be made to either float or sink in aqueous environments, and are capable of providing the controlled release of their bioactive materials when applied to terrestrial or aqueous environments.

5,6-Dihydro-1,2,4,6-thiatriazin-5-one-1,1-dioxides

5,6-Dihydro-1,2,4,6-thiatriazin-5-one-1,1-dioxides of the formula STR1 where R1 is hydrogen, a metal atom or an unsubstituted or substituted ammonium radical, R2 is a saturated or unsaturated straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical or 3 to 7 carbon atoms, a branched saturated or unsaturated aliphatic radical of 3 to 10 carbon atoms, a halogen-, alkoxy- or alkylmercapto-substituted aliphatic radical of 2 to 10 carbon atoms tetrahydrofuryl substituted methyl, a cycloalkoxy-substituted aliphatic radical of 4 to 10 carbon atoms, unsubstituted or halogen-substituted benzyl or phenyl, halophenyl, or alkylphenyl of a total of up to 10 carbon atoms, R3 is hydrogen, a straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical of 3 to 7 carbon atoms, a branched aliphatic radical of 3 to 10 carbon atoms, haloalkyl, or alkoxyalkyl of 2 to 10 carbon atoms and X is oxygen and may also be sulfur if R2 is unsubstituted or halogen-substituted benzyl, processes for their preparation, and herbicides containing the above compounds.

Pesticide-polymer systems prepared from vinyl monomers

Controlled release pesticide-polymer systems are prepared by the polymerization of vinyl monomers containing pendant pesticides. The vinyl monomers are prepared by reacting an acrylic acid derivative with a pesticide or a pesticide derivative having an active hydrogen. The pesticide-polymer systems prepared from the pesticide vinyl monomers release the active pesticide material by hydrolysis or chemical depolymerization under conditions of use.