2-methylthiobenzothiazole

Structural formula
General
Surname	2-methylthiobenzothiazole
other names	2-methyl mercaptobenzothiazole 2-methylthiobenzothiazole MeSBT MTBT Methylcaptax
Molecular formula	C 8 H 7 NS 2
Brief description	Prisms
External identifiers / databases
CAS number 615-22-5 EC number 210-417-1 ECHA InfoCard 100.009.471 PubChem 11989 Wikidata Q15999703
properties
Molar mass	181.28 g mol −1
Physical state	firmly
Melting point	43-46 ° C 52 ° C
boiling point	174 ° C
solubility	very sparingly soluble in water (125 mg l −1 at 24 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319-335 P: 261-305 + 351 + 338
Toxicological data	980 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 .

2-Methylthiobenzothiazole is a chemical compound from the group of thiazoles , which is formed as a breakdown product of the fungicide (benzothiazol-2-ylthio) methylthiocyanate or the vulcanization accelerator mercaptobenzothiazole . A few tons are released every year in Germany through tire wear . The substance is aerobically difficult to biodegrade in the sewage treatment plant and can therefore be detected in surface waters in the two to three-digit ng · l ⁻¹ range.

Individual evidence

1. ↑ ^{a b c} David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-376.
2. ↑ ^{a b c} Data sheet 2- (Methylthio) benzothiazole, 97% from Sigma-Aldrich , accessed on April 1, 2014 ( PDF ).
3. ↑ ^{a b} HLUG report 6.25: Benzothiazoles
4. ↑ Data sheet at Clearsynth ( Memento from April 7, 2014 in the Internet Archive )