5-Methyl-1H-benzotriazole
5-Methyl-1H-benzotriazole (CAS: 136-85-6, Formula: C7H7N3) is a heterocyclic organic compound with a molecular weight of 133.15 g/mol. This chemical is primarily utilised as a building block in chemical synthesis and features in the determination of benzothiazoles and benzotriazoles in wastewater samples. Supplied by Tech Serve Solutions, it is available at a purity of 98%.

Analytical Chemistry
Used as a reference standard or reagent in analytical methods, such as the GC-MS determination of benzothiazoles and benzotriazoles in wastewater samples.
Organic Synthesis
Serves as a valuable heterocyclic building block in the synthesis of more complex organic molecules and chemical intermediates.
Research and Development
A chemical reagent employed in laboratory research for developing new compounds and investigating chemical reactions.
| Molecular weight | 133.15 |
|---|---|
| Empirical formula | C7H7N3 |
| Assay | 98% |
| Boiling point | 210-212 °C/12 mmHg(lit.) |
| Application | 5-Methyl-1H-benzotriazole was used in determination of benzothiazoles and benzotriazoles in waste water samples by GC-MS1. |
| Melting point | 80-82 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 5-Methyl-1H-benzotriazole used for?
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5-Methyl-1H-benzotriazole is used in analytical chemistry, for instance, in the determination of benzothiazoles and benzotriazoles in wastewater samples by GC-MS. It is also a building block in organic synthesis and chemical research.
What are the CAS number and formula for 5-Methyl-1H-benzotriazole?
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The CAS number is 136-85-6, and the empirical formula is C7H7N3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Methyl-1H-benzotriazole with a purity of 98%. This is a technical grade for research and industrial use; TSS does not represent it as USP, BP, or EP grade.
How should 5-Methyl-1H-benzotriazole be handled safely?
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Handle with appropriate personal protective equipment, including a dust mask (type N95 recommended), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation. Refer to the Safety Data Sheet for comprehensive handling instructions.
Is 5-Methyl-1H-benzotriazole shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 5-Methyl-1H-benzotriazole.
How can I request a quote or sample?
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Please contact our sales team directly via the website or provide your details for a prompt response to your quote or sample request.
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