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theta-Cypermethrin

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theta-Cypermethrin Basic information

Product Name:
theta-Cypermethrin
CAS:
71697-59-1
MF:
C22H19Cl2NO3
MW:
416.3
EINECS:
265-898-0;257-842-9
Mol File:
71697-59-1.mol
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theta-Cypermethrin Chemical Properties

Boiling point:
511.3±50.0 °C(Predicted)
Density 
1.329±0.06 g/cm3(Predicted)
vapor pressure 
1.8×10-7 Pa (20 °C)
storage temp. 
0-6°C
Water Solubility 
0.11 mg l-1(25 °C)
EPA Substance Registry System
Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, (R)-cyano(3-phenoxyphenyl)methyl ester, (1S,3R)-rel- (71697-59-1)
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theta-Cypermethrin Usage And Synthesis

Uses

Theta-cypermethrin is used for public health and animal pest control.

Metabolic pathway

Theta-cypermethrin is composed of two of the four trans-cypermethrin isomers of cypermethrin (1RtransaS and 1StransaR). The fate of these two isomers (separately) has been reported for soils. Metabolite analysis was conducted in enough detail to indicate that the fate of the components was very similar to their fate when presented to biological systems as part of cypermethrin. Thus reference can be made to the cypermethrin entry for details. The structure and Scheme numbering used below refers to the cypermethrin entry.

Degradation

Theta-cypermethrin is stable as a solid but it is readily hydrolysed in alkaline solution. Its half-lives at pH values 3,7 and 9 (25 °C) were 50,20 and 10 days (PM). By analogy with cypermethrin, the rate-determining step in dilute solution is nucleophilic attack by OH-. Half-lives of transcypermethrin in river water and sea water at 25 °C were 5 and 7 days, respectively. Major products were 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid (2, DCVA), 3-phenoxybenzaldehyde (9, 3PBAl) and a-carbamoyl-3-phenoxybenzyl 3-(2,2-dichlorovinyl)-2,2- dimethylcyclopropanecarboxylate (the amide 3); minor products were the a-carboxy analogue of 3 (4) and 3-phenoxybenzoic acid (10,3PBA) (see cypermethrin, Schemes la and 1b).
Photodecomposition would be expected to be similar to that of cypermethrin.

theta-Cypermethrin Preparation Products And Raw materials

Raw materials

Preparation Products

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theta-CypermethrinSupplierMore

Hangzhou Yuhao Chemical Technology Co., Ltd
Tel:
0571-82693216
Email:
info@yuhaochemical.com
Nanjing Sunlida Biological Technology Co., Ltd.
Tel:
025-58378339;025-57798810
Email:
sales@sunlidabio.com;sales@sunlidabio.com
Shanghai Huikai Chemical Technology Co., Ltd.
Tel:
021-61995394 18916691159
Email:
chemicalsea@163.com
TianJin Alta Scientific Co., Ltd.
Tel:
+86-022-6537-8550
Email:
contact@altascientific.com
Hangzhou J&H Chemical Co., Ltd.
Tel:
0571-87396432-
Email:
sales@jhechem.com;
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