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81406-37-3 Bio Agro Chemicals Fluroxypyr Meptyl 25% EC Fluroxypyr MHE

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81406-37-3 Bio Agro Chemicals Fluroxypyr Meptyl 25% EC Fluroxypyr MHE

Brand Name : MOLOTUS
Model Number : fluroxypyr-meptyl 25% EC
Certification : ISO
Place of Origin : CHINA
MOQ : Negotiable
Price : Negotiable
Payment Terms : L/C, T/T, Western Union
Delivery Time : 20-25 days
Packaging Details : 25KG Package as client's demand
Active Ingredient : fluroxypyr-meptyl
Formulation : 25% EC
Other Name : fluroxypyr MHE
M.f. : C7H5Cl2FN2O3
Weeds : Galium aparine and Kochia spp
Stability : Stable under normal storage conditions
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81406-37-3 Bio Agro Chemicals Fluroxypyr Meptyl 25% EC Fluroxypyr MHE


NOMENCLATURE

fluroxypyr

Common name fluroxypyr (BSI, draft E-ISO, (m) draft F-ISO, ANSI)

IUPAC name 4-amino-3,5-dichloro-6-fluoro-2-pyridyloxyacetic acid

Chemical Abstracts name [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acid

CAS RN [69377-81-7]


fluroxypyr-meptyl

Chemical Abstracts name 1-methylheptyl [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetate

Other names fluroxypyr MHE CAS RN [81406-37-3] EEC no. 279-752-9


PHYSICAL CHEMISTRY

fluroxypyr

Mol. wt. 255.0 M.f. C7H5Cl2FN2O3 Form White, crystalline solid. M.p. 232-233 ºC V.p. 3.784 ´ 10-6 mPa (20 ºC, Knudsen effusion); 5 ´ 10-2 mPa (25 °C) KOW logP = -1.24 (unstated pH) Henry 1.06 ´ 10-8 Pa m3 mol-1 (calc.) S.g./density 1.09 (24 ºC) Solubility In water 5700 (pH 5.0), 7300 (pH 9.2) (both mg/l, 20 ºC) . In acetone 51.0, methanol 34.6, ethyl acetate 10.6, isopropanol 9.2, dichloromethane 0.1, toluene 0.8, xylene 0.3 (all in g/l, 20 ºC). Stability Stable in acidic media. Fluroxypyr is acidic, and reacts with alkalis to form salts. DT50 in water 185 d (pH 9, 20 ºC). Stable at temperatures up to melting point. Stable in visible light. pKa 2.94


fluroxypyr-meptyl

Mol. wt. 367.2 M.f. C15H21Cl2FN2O3 Form Off-white solid. M.p. 58.2-60 ºC V.p. 1.349 ´ 10-3 mPa (20 ºC, Knudsen effusion); 2 ´ 10-2 mPa (20 °C, method unspecified) KOW logP = 4.53 (pH 5), 5.04 (pH 7) Henry 5.5 ´ 10-3 Pa m3 mol-1 S.g./density 1.322 Solubility In water 0.09 mg/l. In acetone 867, methanol 469, ethyl acetate 792, dichloromethane 896, toluene 735, xylene 642, hexane 45 (all in g/l, 20 ºC). Stability Stable under normal storage conditions; decomposes above m.p. Stable in visible light. Hydrolytic DT50 454 d (pH 7), 3.2 d (pH 9); stable at pH 5. Stable to aquatic photolysis. In natural waters, DT50 1-3 d.


APPLICATIONS

Biochemistry Synthetic auxin (acting like indolylacetic acid). Mode of action Fluroxypyr is applied as fluroxypyr-meptyl. After predominantly foliar uptake, the ester is hydrolysed to the parent acid, which is the herbicidally active form, and translocated rapidly to other parts of the plants. Acts by inducing characteristic auxin-type responses, e.g. leaf curling. Uses Fluroxypyr is effective by post-emergence foliar application, controlling a range of economically important broad-leaved weeds (including Galium aparine and Kochia spp.) in all small grain crops, and Rumex spp. and Urtica dioica in pastures. Directed applications are used against herbaceous and woody broad-leaved weeds in orchards (apple only) and plantation crops (rubber and oilpalm), and broad-leaved brush spp. in conifer forests. Post-emergence, broadcast applications of fluroxypyr in maize up to the 6-leaf stage of the crop are used for control of Calystegia sepium, Convolvulus arvensis and Solanum nigrum. The meptyl and 2-butoxy-1-methylethyl esters have similar activity, the advantage of the latter being the wider range of formulation options that are available. Applied at 180-400 g a.e./ha. Phytotoxicity Non-phytotoxic to the crops for which its use is recommended. Formulation types EC; EW; SE.




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