Molekula
3-Mercapto-1,2,4-triazole
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
3-Mercapto-1,2,4-triazole is a sulfur-containing heterocyclic compound used as a corrosion inhibitor, stabilizer, and intermediate in organic synthesis. It is a white to off-white crystalline powder with a molecular formula of C2H3N3S, a molecular weight of 101.13 g/mol, and a CAS number of 3179-31-5. It is stable at ambient storage conditions. Hazard classification includes signal word Danger. Molekula supplies 3-Mercapto-1,2,4-triazole from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £20.20 per pack ex VAT · £24.24 inc. VAT
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100 g — £93.20 per pack ex VAT · £111.84 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White or light yellow crystals |
| Melting Point | 218.0 - 223.0 °C |
| Identification | Conforms to reference |
| Loss on Drying | ≤0.5% |
| Assay | ≥99.0 % |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 10821503 |
| CAS Number | 3179-31-5 |
| IUPAC Name | 1,2-dihydro-1,2,4-triazole-3-thione |
| Molecular Formula | C2H3N3S |
| Molecular Weight | 101.13 |
| Exact Mass | 101.0048 |
| SMILES | C1=NC(=S)NN1 |
| InChIKey | AFBBKYQYNPNMAT-UHFFFAOYSA-N |
| InChI | InChI=1S/C2H3N3S/c6-2-3-1-4-5-2/h1H,(H2,3,4,5,6) |
| PubChem CID | 2723802 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933.99.8290 |
| Tariff Code | 2933998090 |
Safety & GHS
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Health Hazard
GHS07
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Hazardous to the Environment
GHS09
Hazard statements
- H302 Harmful if swallowed
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1,2-Dihydro-3H-1,2,4-triazole-3-thione
- 1,2,4-Triazole-3-thiol
- 1,2,4-Triazole-5-thiol
- 1,2,4-triazolethione
- 1H-1,2,4-Triazole-3-thiol
- 3H-1,2,4-Triazole-3-thione, 1,2-dihydro-
- 5-Mercapto-1,3,4-triazole
- delta2-1,2,4-Triazoline-5-thione
- Mercaptotriazole
- S-Triazole-3-thiol
Frequently asked questions
What is 3-Mercapto-1,2,4-triazole used for?
It is primarily used as a corrosion inhibitor and intermediate in the synthesis of pharmaceuticals and agrochemicals.
What is the chemical formula and molecular weight of 3-Mercapto-1,2,4-triazole?
The formula is C2H3N3S with a molecular weight of 101.13 g/mol.
How should 3-Mercapto-1,2,4-triazole be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade is available for 3-Mercapto-1,2,4-triazole?
Available in technical grade; custom purity options may be available upon request.
Can Molekula supply 3-Mercapto-1,2,4-triazole in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and lead times.
What documentation comes with an order of 3-Mercapto-1,2,4-triazole?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.