1H-Benzotriazole-4-sulfonic acid
1H-Benzotriazole-4-sulfonic acid (CAS: 26725-50-8; C6H5N3O3S) is a chemical compound with a molecular weight of 199.19 g/mol. It functions as a reactant in the synthesis of supramolecular complexes and as a corrosion inhibitor in advanced material preparations. Tech Serve Solutions supplies this compound for research and development purposes, adhering to strict quality standards.

Preparation of Supramolecular Complexes
Serves as a key reactant in the synthesis of copper benzotriazolesulfonate phenanthroline supramolecular complexes, contributing to novel material science applications.
Corrosion Inhibition
Utilised as a corrosion inhibitor in the development of polystyrene nanosphere-templated cerium molybdate nanocontainers, enhancing material durability.
Chemical Synthesis Reagent
A versatile reagent used in various chemical synthesis pathways, including C-C, C-S, and C-X bond formations, supporting diverse organic chemistry research.
| Molecular weight | 199.19 |
|---|---|
| Empirical formula | C6H5N3O3S |
| Assay | 97% |
| Application | • Reactant for preparation of copper benzotriazolesulfonate phenanthroline supramolecular complex1• Used as a corrosion inhibitor in preparation of polystyrene nanosphere-templated cerium molybdate nanocontainers loaded with corrosion inhibitors2 |
| Melting point | 285 °C (dec.)(lit.) |

Hazard statements
- H302Harmful if swallowed
- H319Causes serious eye irritation
Precautionary statements
- 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 |
| Safety statements (S) | 36 |
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 1H-Benzotriazole-4-sulfonic acid used for?
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1H-Benzotriazole-4-sulfonic acid is used as a reactant for preparing copper benzotriazolesulfonate phenanthroline supramolecular complexes and as a corrosion inhibitor in the preparation of nanocontainers.
What are the CAS number and formula for 1H-Benzotriazole-4-sulfonic acid?
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The CAS number is 26725-50-8, and the empirical formula is C6H5N3O3S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1H-Benzotriazole-4-sulfonic acid at a purity of 97%. This is a technical/research grade, and TSS does not represent it as USP, BP, or EP grade.
What are the primary safety concerns when handling 1H-Benzotriazole-4-sulfonic acid?
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1H-Benzotriazole-4-sulfonic acid is classified as harmful if swallowed (H302) and causes serious eye irritation (H319). It requires handling with appropriate personal protective equipment, including a dust mask (type N95), eyeshields, and gloves. Appropriate ventilation is also recommended.
Is 1H-Benzotriazole-4-sulfonic acid a controlled substance?
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The provided data does not indicate that 1H-Benzotriazole-4-sulfonic acid is a controlled substance.
How is 1H-Benzotriazole-4-sulfonic acid packed and shipped?
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1H-Benzotriazole-4-sulfonic acid is carefully packed to ensure safe transport and is exported globally by Tech Serve Solutions, adhering to all relevant shipping regulations.
How can I request a sample or a quote for 1H-Benzotriazole-4-sulfonic acid?
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To request a sample or a quote, please contact Tech Serve Solutions directly through our website or by calling our sales department. Our team will be pleased to assist you.
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