5-methyl-1 H -benzotriazole

Structural formula
General
Surname	5-methyl-1 H -benzotriazole
other names	6-methylbenzotriazole 5-methyl-1 H -1,2,3-benzotriazole
Molecular formula	C 7 H 7 N 3
Brief description	powder
External identifiers / databases
CAS number 136-85-6 EC number 205-265-8 ECHA InfoCard 100,004,787 PubChem 8705 Wikidata Q17493530
properties
Molar mass	133.15 g mol −1
Physical state	firmly
Melting point	80-82 ° C
boiling point	210–212 ° C (16 hPa )
solubility	sparingly soluble in water (6 g l at 25 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 302-315-319-335 P: 261-305 + 351 + 338
Toxicological data	1,600 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 .

5-Methyl-1 H -benzotriazole , C ₇ H ₇ N ₃ is a chemical compound from the group of benzotriazoles .

properties

The compound is a powder that is difficult to ignite. It is difficult to dissolve in water.

use

5-Methyl-1 H -benzotriazole is contained in antifreeze and is used as a corrosion inhibitor for copper .

Individual evidence

1. ↑ ^{a b c d e f g} Entry on 5-methyl-1H-benzotriazole in the GESTIS substance database of the IFA , accessed on February 2, 2019 (JavaScript required)
2. ↑ ^{a b} Data sheet 5-Methyl-1H-benzotriazole from Sigma-Aldrich , accessed on February 2, 2019 ( PDF ).