History of N,N-Diethyl-3-methylbenzamide DEET CAS 134-62-3
DEET was invented by the US military during the “World War II” period. It was used by the army in 1946 and civilian use in 1957. It was first used as a pesticide on farms, and later the US government applied for it to be used during the war, especially in Vietnam and Southeast Asia.
Mechanism of action of DEET CAS 134-62-3
DEET is volatile and contains human sweat and breath. It works by blocking the 1-octene-3-ol of insect olfactory receptors. The more popular theory is that DEET effectively makes insects lose their sense of special smell to humans or animals. As people initially guessed, DEET did not affect the insect’s ability to smell carbon dioxide.
However, recent scientific studies have shown that DEET acts as a real mosquito repellent and works by making mosquitoes feel uncomfortable. The mosquitoes of the antennal sensilla of type A olfactory receptor neurons have been confirmed to have a clear response to DEET, and there are other known mosquito repellents, such as cineole, linalool, and thuja.
Chemical properties of DEET CAS 134-62-3
At room temperature, DEET is a pale yellow or colorless liquid.
It can be made from diethylcarbamoyl chloride and methyl benzoic acid. It can also be made from methyl benzoyl chloride and ethylamine.
Reaction with certain substances of DEET CAS 134-62-3
DEET is a powerful solvent that can dissolve plastics, man-made fibers, spandex, synthetic fiber tissues, leather, and colored or painted surfaces including nail polish.

Name: N,N-Diethyl-3-methylbenzamide; DEET
CAS: 134-62-3
Molecular Formula: C12H17NO
Molecular Weight: 191.27
HomeCASCAS 134 CAS 134-62-3

Names and Identifiers
Name N,N-Diethyl-3-methylbenzamide
Synonyms DEET
N,N-Diethyl-m-toluamide
m-Toluic acid diethylamide
3-methyl-2-deutero-N,N-diethylbenzamide
3-Methyl-N,N-diethylbenzamide
N,N-diethyl-3-methyl-Benzamide
n,n-diethyl-m-toluamid
2,4-diethyl-3-methylbenzamide
Diethyl-3-methylbenzamide

benzamide, N,N-diethyl-3-methyl-
Diethyltoluamide (USP)
N,N-Diethyl-3-methylbenzamid
N,N-diethyl-3-methyl-benzamide

N,N-Diéthyl-3-méthylbenzamide
N,N-Diethyl-3-methylbenzolcarboxamid
N,N-Diethyl-m-methylbenzamide
N,N-Diethyl-m-toluamide (DEET)
Diethyltoluamide
CAS 134-62-3
EINECS 205-149-7
InChI InChI=1/C12H17NO/c1-4-9-6-7-11(12(13)14)10(5-2)8(9)3/h6-7H,4-5H2,1-3H3,(H2,13,14)

Physico-chemical Properties
Molecular Formula C12H17NO
Molar Mass 191.27 g/mol
Density 1.006g/cm3
Boling Point 268.9°C at 760 mmHg
Flash Point 116.4°C
Solubility NEGLIGIBLE
Vapor Presure 0.0075mmHg at 25°C
Refractive Index 1.534

 
Risk and Safety
Hazard Symbols Xn – Harmful
Harmful
Risk Codes R22 – Harmful if swallowed
R36/38 – Irritating to eyes and skin.
R52/53 – Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Description S61 – Avoid release to the environment. Refer to special instructions / safety data sheets.

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CAS 134-62-3, N,N-Diethyl-3-methylbenzamide DEET, C12H17NO
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