4-choro-2(3h)-benzothiazolone

4-choro-2(3h)-benzothiazolone - Names and Identifiers

Name	4-Choro-2(3H)-benzothiazolone
Synonyms	CHBT 4-CHLOROBENZOTHIAZOLONE 4-Choro-2-benzothiazolone 4-CHARO-2(3H)BENZOTHIAZOLONE 4-Choro-2(3H)-benzothiazolone 4-choro-2(3h)-benzothiazolone 4-Chlorobenzothiazol-2(3H)-one 4-Chloro-2(3H)-benzothiazolone 4-chlorobenzothiazol-2(3H)-one 2(3H)-Benzothiazolone, 4-chloro- 2-HYDROXY-4-CHLORO BENZOTHIOZOLE 4-chloro-1,3-benzothiazol-2(3H)-one 2(3H)-Benzothiazolone,4-chloro-(9CI)
CAS	39205-62-4
EINECS	254-354-8
InChI	InChI=1/C7H4ClNOS/c8-4-2-1-3-5-6(4)9-7(10)11-5/h1-3H,(H,9,10)

4-choro-2(3h)-benzothiazolone - Physico-chemical Properties

Molecular Formula	C7H4ClNOS
Molar Mass	185.63
Density	1.515±0.06 g/cm3(Predicted)
Melting Point	204-205°C
Boling Point	394.2°C at 760 mmHg
Flash Point	192.2°C
Vapor Presure	8.85E-07mmHg at 25°C
pKa	9.35±0.20(Predicted)
Storage Condition	Sealed in dry,Room Temperature
Refractive Index	1.669
Physical and Chemical Properties	This product is a white needle-like solid, m.p.200 ~ 202 ℃, soluble in ethanol and dichloroethane and other organic solvents, insoluble in water.

4-choro-2(3h)-benzothiazolone - Risk and Safety

HS Code

29342000

4-choro-2(3h)-benzothiazolone - Reference Information

Use

4-Chlorobenzothiazolone is an intermediate of herbicide herbicides.

production method

its preparation method is to put 2-amino -4-chlorobenzothiazole hydrobromide, dichloroethane, hydrochloric acid and water into the reaction kettle, stir at a temperature of 15-20 ℃, add sodium nitrite solution dropwise, continue stirring for 3 hours after adding, preset stratification, and dissolving and dissolving the oil layer at normal pressure to evaporate dichloroethane, ethanol is added while it is hot, and 30% hydrochloric acid and sulfuric acid are added dropwise at the same time. After dropwise addition, the reaction is refluxed for 3 hours. After the reaction is finished, the product is cooled, filtered and dried.

Last Update：2024-04-10 22:29:15