Bromopropylate

Bromopropylate

溴螨酯

isopropyl 4,4′-dibromobenzilate

1-methylethyl 4-bromo-α-(4-bromophenyl)-α-hydroxybenzeneacetate

18181-80-1

C₁₇H₁₆Br₂O₃

Acaricides / Miticides > Bridged diphenyl acaricides

Acaricide/Miticide

Emulsifiable concentrate. Premix Parters: atrazine; benazolin ioxynil; bentazone; 2,4-D; 2,4-D propanil; dicamba mecoprop; diflufenican ioxynil; ethofumesate ioxynil; fluroxypyr ioxynil; ioxynil; ioxynil isoproturon; ioxynil isoproturon mecoprop; ioxynil MCPA; ioxynil mecoprop; ioxynil mecoprop-P; MCPA; MCPA mecoprop; terbuthylazine;

Molecular weight:428.1; Physical form:White crystals. Density:1.59 at 20 °C; Melting point:77 °C; Vapour pressure:6.8 × 10-3 mPa(20 °C); Henry constant:<5.82 × 10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 5.4; Solubility:In water <0.5 mg/l (20 °C). In acetone 850, dichloromethane 970, dioxane 870, benzene 750, methanol 280, xylene 530, isopropanol 90 (all in g/kg, 20 °C).; Stability:Fairly stable in neutral or slightly acidic media; DT50 34 d ( pH 9).;

Oral:Acute oral LD₅₀ for rats >5000 mg Percutaneous:Acute percutaneous LD₅₀ for rats >4000 mg/kg. Slightly irritating to skin; non-irritating to eyes (rabbits). Inhalation: LC₅₀ for rats >4000 mg/kg. Phytotoxicity:Slightly phytotoxic to certain varieties of apple, plum, and ornamentals.

Ecotoxicology:
 Algae: EC₅₀ (72h) for Scenedesmus subspicatus >52 mg/l.Bees:Not toxic to bees; LC₅₀ (24 h) 183 mg/bee.Birds:Acute oral LD₅₀ for Japanese quail >2000 mg/kg. Dietary LC₅₀ (8 d) for Pekin ducks 600, Japanese quail 1000 mg/kg diet.Daphnia:LC₅₀ (48 h) 0.17 mg/l.Fish: LC₅₀ (96 h) for rainbow trout 0.35, bluegill sunfish 0.5, carp 2.4 mg/l.Worms: LC₅₀ (14 d) for earthworms >1000 mg/kg soil.Other beneficial spp.:Safe on the relevant adult and immature stages of anthocorids, mirids, coccinellids, Chrysopa, Hemerobius, staphylinids, carabids, syrphids and dolichopodids in deciduous fruits, citrus and hops. The potential hazard to predatory mites c 

Environmental fate: 
Animals:Bromopropylate is rapidly and efficiently eliminated in animals. Metabolism occurs by cleavage of the isopropyl ester and, to a minor extent, by oxidation. Metabolites formed after oxidation were 3-hydroxybenzilate and conjugates.Soil:The principal metabolite in soil is 4,4-dibromobenzilic acid. For details of persistence in soil, see J. Environ. Qual., 1973, 2, 115. DT₅₀ c. 40-70 d (lab. and field studies). Low mobility in Plant:Studies with ¹⁴C-labelled bromopropylate showed little penetration into leaves or fruit. Degradation was slow.

Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)