N , N -dicyclohexylbenzothiazole-2-sulfenamide

Structural formula
General
Surname	N , N -dicyclohexylbenzothiazole-2-sulfenamide
other names	N , N -dicyclohexyl-2-benzothiazylsulfenamide; Benzothiazyl-2-dicyclohexylsulfenamide; N , N -dicyclohexyl-2-benzothiazolesulfenic acid amide; DCBS;
Molecular formula	C 19 H 26 N 2 S 2
Brief description	yellowish solid with a faint odor
External identifiers / databases
EC number	225-625-8
ECHA InfoCard	100.023.296
PubChem	21080
Wikidata	Q27262639
properties
Molar mass	346.59 g mol −1
Physical state	firmly
density	approx. 1.2 g cm −3
Melting point	> 96 ° C
solubility	practically insoluble in water (30 mg l −1 at 20 ° C); in most organic solvents such as B. ethanol , acetone , ethyl acetate and dichloromethane are good;
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 317-412
	P: 261-272-273-280-302 + 352-333 + 313-362 + 364-501
Toxicological data	6420 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

N , N -Dicyclohexylbenzothiazole-2-sulfenamide is a chemical compound from the group of sulfenamides and thiazoles .

properties

N , N -Dicyclohexylbenzothiazol-2-sulfenamide is a flammable, difficult to ignite, yellowish solid with a faint odor, which is practically insoluble in water. Above 200 ° C, the compound decomposes, producing (similar to its hydrolysis ) dicyclohexylamine and 2-mercaptobenzothiazole , followed by benzothiazole .

use

N , N -Dicyclohexylbenzothiazole-2-sulfenamide is used as a vulcanization accelerator.

Risk assessment

N , N -Dicyclohexylbenzothiazol-2-sulfenamide was included in the EU's ongoing action plan ( CoRAP ) in 2013 in accordance with Regulation (EC) No. 1907/2006 (REACH) as part of substance evaluation . The effects of the substance on human health and the environment are re-evaluated and, if necessary, follow-up measures are initiated. The reasons for the uptake of N , N -dicyclohexylbenzothiazole-2-sulfenamide were concerns about consumer use , exposure of workers and widespread use as well as the dangers arising from a possible assignment to the group of CMR or PBT / vPvB substances and the suspected dangers through sensitizing properties. The reassessment took place from 2013 and was carried out by Germany . A final report was then published.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on N, N-dicyclohexylbenzothiazole-2-sulfenamide in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
↑ GisChem: N, N-Dicyclohexylbenzothiazol-2-sulfenamid (DCBS) , accessed on May 1, 2018.
↑ ^a ^b ECHA: Results of the evaluation of the PBT / VPVB properties of N, N-Dicyclohexylbenzothiazole-2-sulphenamide , accessed on December 24, 2016.
^ European Chemicals Agency (ECHA): Substance Evaluation Report and Conclusion Document .
↑ Community rolling action plan ( CoRAP ) of the European Chemicals Agency (ECHA): N, N-dicyclohexylbenzothiazole-2-sulphenamide , accessed on March 26, 2019.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Entry on N, N-dicyclohexylbenzothiazole-2-sulfenamide in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .

[gischem-2] GisChem: N, N-Dicyclohexylbenzothiazol-2-sulfenamid (DCBS) , accessed on May 1, 2018.

[ECHA-3] ECHA: Results of the evaluation of the PBT / VPVB properties of N, N-Dicyclohexylbenzothiazole-2-sulphenamide , accessed on December 24, 2016.

[4] European Chemicals Agency (ECHA): Substance Evaluation Report and Conclusion Document .

[5] Community rolling action plan ( CoRAP ) of the European Chemicals Agency (ECHA): N, N-dicyclohexylbenzothiazole-2-sulphenamide , accessed on March 26, 2019.