4-METHYL-2-HYDRAZINO BENZOTHIAZOLE
4-Methyl-2-hydrazino benzothiazole
CAS: 20174-68-9
Molecular Formula: C8H9N3S
4-METHYL-2-HYDRAZINO BENZOTHIAZOLE - Names and Identifiers
4-METHYL-2-HYDRAZINO BENZOTHIAZOLE - Physico-chemical Properties
| Molecular Formula | C8H9N3S |
| Molar Mass | 179.24 |
| Density | 1.44±0.1 g/cm3(Predicted) |
| Melting Point | 167-169 °C |
| Boling Point | 351.5±35.0 °C(Predicted) |
| Flash Point | 159.6°C |
| Vapor Presure | 8.68E-05mmHg at 25°C |
| Appearance | White needle crystal |
| pKa | 2.62±0.20(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Store in freezer, under -20°C |
| Refractive Index | 1.774 |
| Physical and Chemical Properties | 4-methyl-2-hydrazinobenzothiazole pure white needle-like crystals, m.p.163 ~ 165 ℃, industrial products for light gray Flake crystals, insoluble in water. |
| Use | Used as a pesticide intermediate |
4-METHYL-2-HYDRAZINO BENZOTHIAZOLE - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | 4-methyl-2-hydrazinyl benzothiazole is an intermediate of the fungicide tricyclazole. Used as pesticide intermediate |
| production method | its preparation method is to add hydrazine hydrate and ethylene glycol into the reaction kettle, and add 4-methyl 2-amino benzothiazole hydrochloride under stirring (if 4-methyl -2-aminobenzothiazole also needs to add appropriate amount of hydrochloric acid). After feeding, the temperature is raised to 116 ℃ for pre-steaming. At the same time, nitrogen is introduced. After the former fraction is collected, it is discarded after treatment. The fraction at 116~122 ℃ is collected as a low-boiling substance. The low-boiling substance is concentrated and applied. Then it is heated and refluxed at 122~124 ℃ for 5 hours to maintain the state of nitrogen. The reaction is over. The nitrogen is stopped, the nitrogen is cooled to 30 ℃, the mother liquid is removed in a suction filter cylinder under vacuum, and the filter cake is put into a pulping kettle, add water at 35 ℃ for beating for 2 hours, then put it into a suction filter cylinder to pump the beating water, then wash the filter cake with water to the end point, and centrifuge to remove the washing water to obtain the finished product. The concentrated solution of the mother liquor beating water in the reaction process is concentrated and analyzed by gas chromatography, and then the content of hydrazine hydrate and ethylene glycol can be inserted into the next reaction. |
Last Update：2024-04-09 15:16:48
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View History
4-METHYL-2-HYDRAZINO BENZOTHIAZOLE
METHYL 2-FLUOROBENZOATE
132098-58-9
Nsc187483
Allyltrimethylammonium chloride
117612-53-0
Sodium Hydrogen Sulfide
10344-69-1
144385-79-5
15980-22-0
METHYL 2-FLUOROBENZOATE
132098-58-9
Nsc187483
Allyltrimethylammonium chloride
117612-53-0
Sodium Hydrogen Sulfide
10344-69-1
144385-79-5
15980-22-0