Mepronil

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Mepronil

中文通用名

灭锈胺

IUPAC

3'-isopropoxy-o-toluanilide

CAS

2-methyl-N-[3-(1-methylethoxy)phenyl]benzamide

CAS No.

[55814-41-0]

Molecular Formula

C₁₇H₁₉NO₂

Molecular Structure

General Product Information

Category

Fungicides > Anilide fungicides

Activity

Fungicide

Physical & Safety Data

Physical Properties

Molecular weight:269.3; Physical form:Colourless crystals. Composition:Tech. is >94%. Melting point:92-93 °C; Flash point:225 °C; Vapour pressure:0.056 (20 °C); Henry constant:1.19 × 10-3 Pa m3 mol-1 ; Partition coefficient(n-octanol and water):logP = 3.66; Solubility:In water 12.7 /l (20 °C). In acetone >500, methanol >500, acetonitrile 314, benzene 282, hexane 1.1 (all in g/l, 20 °C).; Stability:Stable to light, air, and heat. Stable in neutral, acidic, and weakly alkaline conditions, but hydrolysed in highly alkaline conditions.;

Toxicology

Oral:Acute oral 50 for rats and mice >10 000 /. Percutaneous:Acute percutaneous 50 for rabbits and rats >10 000 /kg. Non-irritating to skin and eyes (rabbits). Inhalation:50 (6 h) for rats >1.32 /l.

Environmental Profile

Ecotoxicology:
Bees:Acute 50 (oral) >0.1 /bee; (contact) >1 /bee.Birds:Acute oral 50 for hens >8000 /.Daphnia:50 for D. carinata >10 /l.Fish:50 (96 h) for carp 8, rainbow trout 10 /l.

Environmental fate:
Animals:Almost all of the dose applied to rats was excreted in urine and faeces within 96 h.Soil:50 in flooded soil 46 d (volcanic sandy loam, 6.8, 1.47%), 50.5 d (alluvial, 6.5, 1.18%).Plant:Almost all ¹⁴C applied to rice leaf sheath or leaf remained in the part treated, with some translocation upwards. Five metabolites were identified.WATER SOLUBILITY:12.7 ppm at 20°C

Transport Information

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