Name | 2-chloro-3-isothiocyanato-prop-1-ene |
Synonyms | 2-chloro allyl isothiocyanate 2-Chloro-3-isothiocyanatopropene 2-Chloro-2-propenyl isothiocyanate 2-chloro-3-isothiocyanato-prop-1-ene |
CAS | 14214-31-4 |
Molecular Formula | C4H4ClNS |
Molar Mass | 133.6 |
Density | 1.2700 |
Boling Point | 182°C |
Storage Condition | Room Temprature |
Refractive Index | 1.5560 (estimate) |
Physical and Chemical Properties | Chemical quality This product is colorless liquid, B. p.73 ~ 76 ℃/2.4kpa, insoluble in water, soluble in organic solvent. |
Use | Use 2-chloropropenyl isothiocyanate is an intermediate of the insecticide thiamethoxam and thiamethoxam. |
Hazard Symbols | T - Toxic |
Risk Codes | 25 - Toxic if swallowed |
Safety Description | 45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
UN IDs | UN 2811 6.1 / PGIII |
Raw Materials | METHYL CHLORIDE Sodium thiocyanate 2,3-Dichloropropene |
Downstream Products | 2-Chloro-5-chloromethylthiazole |
the preparation method is to add solvents acetonitrile, 2, 3-dichloropropene and sodium thiocyanate in the reaction kettle, heat and reflux for 3.5h in the presence of a catalyst, filter the insoluble matter, concentrate the filtrate, then add methylene chloride, filter the insoluble matter, concentrate the residue, heat the oil bath to 140 ℃ for 1h, and distill the product under reduced pressure. Reaction equation: CH2 = CHClCH2Cl NaSCN & rarr;CH2 = CHClCH2NCS