O-Chlorobenzothiazole
2-Chlorobenzothiazole
CAS: 615-20-3
Molecular Formula: C7H4ClNS
O-Chlorobenzothiazole - Names and Identifiers
| Name | 2-Chlorobenzothiazole |
| Synonyms | usafek-2784 USAF ek-2784 2-Chlorobenzophiazole 2-CHLOROBENZOTHIAZOLE 2-Chlorobenzothiazole 2-chloro-benzothiazol O-Chlorobenzothiazole 2-CHLOROBENZO[D]THIAZOLE 2-BENZOTHIAZOLYL CHLORIDE 2-CHLORO-1,3-BENZOTHIAZOLE 2-chloro-1,3-benzothiazole |
| CAS | 615-20-3 |
| EINECS | 210-415-0 |
| InChI | InChI=1/C7H4ClNS/c8-7-9-5-3-1-2-4-6(5)10-7/h1-4H |
O-Chlorobenzothiazole - Physico-chemical Properties
| Molecular Formula | C7H4ClNS |
| Molar Mass | 169.63 |
| Density | 1.303 g/mL at 25 °C (lit.) |
| Melting Point | 21-23 °C (lit.) |
| Boling Point | 141 °C/30 mmHg (lit.) |
| Flash Point | >230°F |
| Water Solubility | insoluble |
| Solubility | Chloroform (Slightly), Methanol (Slightly) |
| Vapor Presure | 0.0392mmHg at 25°C |
| Appearance | Liquid |
| Specific Gravity | 1.3711.303 |
| Color | Clear yellow to yellow-brownish |
| BRN | 116316 |
| pKa | -0.23±0.10(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Refractive Index | n20/D 1.637(lit.) |
| Physical and Chemical Properties | This product is pink liquid, has a strong pungent odor, m. P. 21-23 °c, B. p.141 ℃/4 kPa,n20D 1.6380, relative density 1.303, F. P.>230 F (110 C), insoluble in water, soluble in toluene and other solvents. |
| Use | Herbicide in rice field for the production of pesticide mefenesin |
O-Chlorobenzothiazole - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | 2810 |
| WGK Germany | 3 |
| RTECS | DL3150000 |
| TSCA | Yes |
| HS Code | 29342080 |
| Hazard Note | Irritant |
O-Chlorobenzothiazole - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | 2-Chlorobenzothiazole is an intermediate of the herbicide benzothiazol. for the production of pesticide benthicam paddy herbicide |
| production method | its preparation method is to add 2-mercaptobenzothiazole, toluene and catalyst to the reaction kettle, raise the temperature, pass a certain amount of phosgene, react to the end point, use hydrogen to drive away hydrogen chloride and residual phosgene, and then desoluate to obtain the product. Chlorination can also be carried out with chlorine gas, 2-mercaptobenzothiazole, solvent and catalyst can be put into the reaction kettle, stirred, heated to a certain temperature, started to pass chlorine gas, and sampled and analyzed when the chlorine gas is passed to a certain amount. The raw materials have disappeared, desolated under reduced pressure, and then distilled to obtain the product. |
| category | pesticide |
| toxicity classification | highly toxic |
| acute toxicity | oral administration-rat LDL0: 250 mg/kg; Abdominal cavity-mouse LD50: 200 mg/kg |
| flammability hazard characteristics | combustible when heated; thermal decomposition discharges toxic nitrogen oxides, sulfur oxides, chloride smoke |
| storage and transportation characteristics | warehouse low temperature ventilation and drying; separate from food raw materials |
| fire extinguishing agent | water, carbon dioxide, foam, dry powder |
Last Update：2024-04-09 02:00:04
