TETRAMETHRIN

PRODUCT IDENTIFICATION
CAS NO.

7696-12-0

TETRAMETHRIN
FORMULA

C19H25NO4
MOL WT.

331.41

H.S. CODE

2926.90
SYNONYMS Phthalthrin; Neo-Pynamin;
Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1- propenyl)-,(1,3,4,5,6,7- hexahydro-1,3-dioxo-2H- isoindol-2-yl) methyl ester; 2,2-Dimethyl-3-(2-methyl-1-propenyl) cyclo propanecarboxylic acid (1,3,4,5,6,7-hexahydro-1,3-dioxo -2H-isoindol-2-yl)methyl ester; Sumitomo SP-1103; Tetramethrine; N-(chrysanthemoxymethyl)-1-cyclohexene- 1,2-dicarboximide; d-Tetramethrin;
(1,3,4,5,6,7-hexahydro-1,3-dioxo-2H-isoindol-2-yl)methyl 2,2-dimethyl-3-(2-methyl -1-propenyl) cyclopropanecarboxylate; (1-Cyclohexene-1,2-dicarboximido)methyl 2,2-dimethyl-3-(2-methyl propenyl)-cyclopropanecarboxylate;
SMILES

 

CLASSIFICATION

 Pyrethroid Ester Insecticide

TOXICITY

MAMMALS

Acute oral LD50 for rats >5,000 mg/kg
Acute percutaneousl LD50 for rats > 5,000 mg/kg
Acute inhalation LC50 (3 h) for rats > 2.74 mg/l air.
In 6 month feeding trial, NOEL for rats 1500 mg/kg diet

WILDLIFE

Acute oral LD50 for mallard ducks and quail >1,000 mg/kg

FISH

LC50(96 h) for bluegill sunfish 0.021 mg/l

BEE

LC50(96 h) for bluegill sunfish 0.021 mg/l

GENERAL DESCRIPTION AND APPLICATIONS
Tetramethrin, the second generation of synthetic pyrethroids, is a contact insecticide with a rapid knockdown action on flies, mosquitoes, cockroaches, wasps and other insect pests in public, home and garden primarily for indoor pest control uses. Tetramethrin is a mixture of four stereoisomers. But commercially effective Tetramethrin is a mixture of two isomers that have the highest insecticidal activity of a cis- to trans- ratio 15~25 : 75~85. It is formulated as an aerosol, an emulsifiable concentrate, and in mosquito coil in combination with other insecticides and synergists.
SPECIFICATION

APPEARANCE

White crystalline solid with a pyrethrum-like odor

PURITY

92.0% min

SPECIFIC GRAVITY

1.108 at 20กษ

VAPOR PRESSURE

0.944 mPa at 30กษ

MELTING POINT

60 ~ 80กษ

SOLUBILITY(20กษ)

Practically insoluble in water. In benzene and xylene 500, acetone, toluene and trichloroethane 400, cyclohexanone, ethylacetate and methylnaphthalene 350, methylisobutylketone 250, Freon 11(trichlorofluoromethane) 230, piperonyl butoxide 200, methanol 53, kerosene 30, hexnae 20, Freon 12(dichlorodifluoromethane) 13 (all in g/kg at 25กษ)

PARTITION COEFFICIENT

Kow logP = 4.49 at 20กษ

STABILITY

Sensitive to alkalis and strong acids. Stable on storage up th 50กษ.Unstable in alcoholic solution. Stable in ketones, chloroform, xylene, common aerosol propellants, etc.
Variable stability with inorganic carriers.

ISOMER RATIO

Cis/Trans = 15 ~ 25 / 75 ~ 85 (Typically 20/80)
TRANSPORTATION
PACKING

50kgs in drum
HAZARD CLASS 6.1 (Packing Group III)
LABEL

The label must read: Harmful by inhalation, in contact with skin, and if swallowed; keep out of reach of children; keep away from food, drink, and animal feed.

UN NO.  
REMARKS