3-Amino-1,2,4-triazole-5-carboxylic acid hydrate
3-Amino-1,2,4-triazole-5-carboxylic acid hydrate (CAS: 304655-78-5) is a chemical compound featuring a triazole ring with amino and carboxylic acid functionalities. With a molecular weight of 128.09 g/mol (anhydrous basis), this heterocyclic building block is primarily utilised in chemical synthesis. It has been employed in the preparation of novel three-dimensional metal-organic frameworks, demonstrating its utility in materials science research and development.
- Synonyms
- 304655-78-5, C3H4N4O2 · xH2O

Synthesis of Metal-Organic Frameworks
3-Amino-1,2,4-triazole-5-carboxylic acid hydrate serves as a ligand in the construction of novel three-dimensional metal-organic frameworks. Its structure facilitates the formation of complex coordination polymers with potential applications in gas storage or catalysis.
Heterocyclic Compound Synthesis
As a versatile heterocyclic building block, this compound is valuable for creating more complex molecules. Its reactive amine and carboxylic acid groups allow for diverse synthetic transformations in organic chemistry research.
Chemical Research Reagent
This chemical is employed in laboratory settings for exploratory synthesis and the development of new chemical entities. Its availability supports ongoing research in materials science and medicinal chemistry.
| Molecular weight | 128.09 (anhydrous basis) |
|---|---|
| Empirical formula | C3H4N4O2 · xH2O |
| Assay | 98% |
| Application | 3-Amino-1,2,4-triazole-5-carboxylic acid (AmTAZAc) has been used in the synthesis of new three-dimensional metal-organic framework, [ZnF(AmTAZ)] solvents1. |
| Melting point | 182 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-39 |
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 3-Amino-1,2,4-triazole-5-carboxylic acid hydrate used for?
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It is used as a building block in chemical synthesis, particularly for creating new three-dimensional metal-organic frameworks and other heterocyclic compounds.
What is the CAS number and formula for 3-Amino-1,2,4-triazole-5-carboxylic acid hydrate?
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The CAS number is 304655-78-5, and its empirical formula is C3H4N4O2 · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 98%. It is supplied as a research or technical grade material and is not represented as USP, EP, or BP grade.
What are the safety and handling recommendations for this compound?
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This compound is a Warning substance, identified by GHS07, with hazard statements H315, H319, and H335, indicating it causes skin irritation, serious eye irritation, and may cause respiratory irritation. Handle with appropriate personal protective equipment, avoid breathing dust, and ensure adequate ventilation. In case of contact with eyes, rinse cautiously with water for several minutes.
How is 3-Amino-1,2,4-triazole-5-carboxylic acid hydrate packed, shipped, and exported?
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We ensure secure and compliant packaging for all our chemicals, adhering to international shipping and export regulations for chemical substances.
How can I request a sample or a quote for this chemical?
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Please contact our sales team directly via the website or by phone to request a sample or a quotation for 3-Amino-1,2,4-triazole-5-carboxylic acid hydrate.
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