Tolyltriazole
5-Methyl-1H-benzotriazole, one of the isomers in tolyltriazole
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| Names | |
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| Other names
_-Methyl-1H-benzotriazole (4, 5, 6, 7, mixture)
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| Identifiers | |
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3D model (JSmol)
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| C7H7N3 | |
| Molar mass | 133.154 g·mol−1 |
| Hazards | |
| GHS labelling: | |
| GHS07: Exclamation markGHS09: Environmental hazard | |
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Related compounds
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Benzotriazole |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
[edit | edit source]Synthesis and reactions
[edit | edit source]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
[edit | edit source]Tolyltriazole has uses similar to benzotriazole, but has better solubility in some organic solvents.[citation needed]
Corrosion inhibitor
[edit | edit source]Environmental relevance
[edit | edit source]Tolyltriazole (and benzotriazole) is a common "polar organic persistent pollutant", often detected at >0.1 μg/L.[2]
Related compounds
[edit | edit source]References
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- ^ 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
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