New approach to synthesis of insecticide Sevin


Carbaryl is a wide-spectrum carbamate insecticide which controls over 100 species of insects on citrus, fruit, cotton, forests, lawns, nuts, ornamentals, shade trees, and other crops, as well as on poultry, livestock and pets. It is also used as a molluscicide and an acaricide. Carbaryl works whether it is ingested into the stomach of the pest or absorbed through direct contact. The chemical name for carbaryl is 1- naphthol N-methylcarbamate. Carbaryl is formulated as a solid which varies from colorless to white to gray, depending on the purity of the compound. The crystals are odorless. This chemical is stable to heat, light and acids under storage conditions. It is non-corrosive to metals, packaging materials, or application equipment. It is found in all types of formulations including baits, dusts, wettable powder, granules, oil, molassas, aqueous dispersions and suspensions.

Chemical identifying information for Carbaryl

Cas Number: 63-25-2; Synonyms: Carbamic acid, methyl-, 1-naphthyl ester, Methylcarbamic acid-1-naphthyl ester, 1-Naphthyl methylcarbamate, Carbamine, Denapon, Dicarbam, Hexavin, Karbaspray, Nac, Ravyon, Septene, Sevin, Tercyl, Tricarnam, and Union Carbide 7744; NIOSH registry number: FC5950000; Chemical formula: C12H11NO2; Molecular Weight: 201.24

Routes of Sevin synthesis:

1) With using naphtol-1 and phosgene:

naphtol-1 and phosgene

2) With using naphtol-1 and methyl isocyanate:

naphtol-1 and methyl isocyanate

3) With using naphtol-1 and methylcarbamoyl chloride:

naphtol-1 and methylcarbamoyl chloride

In these routes of synthesis of Carbaryl highly toxic substances such as phosgene, methyl isocyanate and methylcarbamoyl chloride are used.

We have developed a new and cost-effective approach to Sevin synthesis without using of toxic reagents:

methyl isocyanate and methylcarbamoyl chloride

If you are interested in this route of Sevin synthesis, please contact us.