IUPAC Name: (3-Phenoxyphenyl)methyl (1R,3S)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate 
Molecular Formula: C₂₁H₂₀Cl₂O₃
Molecular Weight: 391.31
Density: 1.293g/cm³
Melting Point: 34 °C
Boiling Point: 465.9°C at 760mmHg
Flash Point: 159.4°C
Freely Rotating Bonds: 7
Polar Surface Area: 35.53 Å²
Index of Refraction: 1.615
Molar Refractivity: 105.69 cm³
Molar Volume: 302.5 cm³
Polarizability: 41.89× 10^-24 cm³
Surface Tension: 50.5 dyne/cm
Enthalpy of Vaporization: 72.76 kJ/mol
Vapour Pressure: 7.41E-09 mmHg at 25°C 
Appearance: colourless crystals
Stability: stable, incompatible with strong oxidising agents
The Cas Register Number of trans-Permethrin is 61949-77-7.The chemical synonyms of trans-Permethrin (CAS NO.61949-77-7) are Trans-permethrin ; trans-Henyl)methyleste ; trans-Meta-phenoxybenzyl3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarbox ; m-Phenoxybenzyl trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate ; Isomericmix;trans-permethrin (bsi,ansi,esa,ban) ; trans-Permethrin solution ; trans-Permethrin standard .Product categories of trans-Permethrin (CAS NO.61949-77-7) are Acaricides Pesticides and Metabolites ; Alpha sort ; Insecticides ; N-PAlphabetic ; P ; PER - POLA Pesticides ; Pesticides ; Pesticides and Metabolites ; Pyrethroids .The molecular structure of trans-Permethrin (CAS NO.61949-77-7) is.

 trans-Permethrin (CAS NO.61949-77-7) is used as pesticide .

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 53 ,1991,p. 329.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 53 ,1991,p. 329.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human No Available Data IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 53 ,1991,p. 329.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

A poison by intravenous route. Moderately toxic by intraperitoneal route. Questionable carcinogen. When heated to decomposition it emits toxic vapors of Cl⁻.
Hazard Codes: F,Xn,N
Risk Statements: 11-38-50/53-65-67 
R11: Highly flammable. R38:Irritating to skin. 
R50/53: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R65: Harmful: may cause lung damage if swallowed. 
R67: Vapours may cause drowsiness and dizziness.
Safety Statements: 60-61-62 
S60: This material and its container must be disposed of as hazardous waste. 
S61: Avoid release to the environment. Refer to special instructions / safety data sheets. 
S62: If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label.
RIDADR: UN 1145 3/PG 2