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Tolyltriazole

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Tolyltriazole
Skeletal formula of tolyltriazole
5-Methyl-1H-benzotriazole, one of the isomers in tolyltriazole
Names
Other names
_-Methyl-1H-benzotriazole (4, 5, 6, 7, mixture)
Identifiers
ECHA InfoCard 100.045.073 Edit this at Wikidata
Properties
C7H7N3
Molar mass 133.154 g·mol−1
Hazards
GHS labelling:
GHS07: Exclamation markGHS09: Environmental hazard
Warning
Related compounds
Related compounds
Benzotriazole
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Tolyltriazole is a mixture of isomers or congeners that differ from benzotriazole by the addition of one methyl group attached somewhere on the benzene ring. "The term tolyltriazole (CAS 29385-43-1) generally [refers to] the commercial mixture composed of approximately equal amounts of 4- and 5-methylbenzotriazole, with small quantities of [their respective 7- and 6-methyl tautomers]".[1]

Structure

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Synthesis and reactions

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Synthesis is much like that of benzotriazole, but starting with methyl-o-phenylenediamine instead of o-phenylenediamine. Isomers of methyl-o-phenylenediamine include 3-methyl-o-phenylenediamine, 4-methyl-o-phenylenediamine, and N-methyl-o-phenylenediamine (not involved here).

Applications

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Tolyltriazole has uses similar to benzotriazole, but has better solubility in some organic solvents.[citation needed]

Corrosion inhibitor

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Environmental relevance

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Hydroxybenzotriazole

References

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  1. ^ Benzotriazole and Tolyltriazole: Evaluation of health hazards and proposal of health-based quality criteria for soil and drinking water, Environmental Project No. 1526, 2006, 2013, The Danish Environmental Protection Agency, ISBN 9 7 8-87-93026-81-0