Molekula
Benzotriazole
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
Benzotriazole is an organic compound primarily used as a corrosion inhibitor in metalworking fluids, antifreeze, and industrial water systems to prevent copper and brass degradation. It also serves as an antifoggant (restrainer) in photographic emulsions and developers and a reagent in chemical synthesis. This white to slightly yellow crystalline solid has a CAS number of 95-14-7, a molecular formula of C6H5N3, and a molecular weight of 119.12. It is stored at ambient conditions and carries a signal word of "Warning" for safety classification. Molekula supplies Benzotriazole 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.
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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500 g — £90.40 per pack ex VAT · £108.48 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 needle crystal |
| Melting Point | 96 - 98°C |
| Water | ≤0.5% |
| Ash | ≤0.5% |
| pH | 4 - 6 |
| Assay | ≥99% |
| Chroma | ≤100 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 170 °C |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White to light tan, crystalline powder |
| Odour | No odor |
| Melting Point | 100 °C |
| Boiling Point | 203.9 °C at 15 mmHg |
| Density | 1.36 g/cm³ at 20 °C |
| Water Solubility | 19.8 g/L at 25 °C |
| Solubility (other solvents) | Soluble in alcohol, benzene, toluene, chloroform and N,N-dimethylformamide |
| Vapour Pressure | 5 Pa at 20 °C |
| pKa | pKa = 8.37 |
| log P (octanol/water) | 1.44 |
Source: PubChem CID 7220 (HSDB, CAMEO Chemicals, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90005191 |
| CAS Number | 95-14-7 |
| IUPAC Name | 2H-benzotriazole |
| EC Number | 202-394-1 |
| Molecular Formula | C6H5N3 |
| Molecular Weight | 119.12 |
| Exact Mass | 119.0483 |
| SMILES | C1=CC2=NNN=C2C=C1 |
| InChIKey | QRUDEWIWKLJBPS-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H5N3/c1-2-4-6-5(3-1)7-9-8-6/h1-4H,(H,7,8,9) |
| PubChem CID | 7220 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933.99.2400 |
| Tariff Code | 2933998081 |
Safety & GHS
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Health Hazard
GHS07
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Hazardous to the Environment
GHS09
Hazard statements
- EUH451 Can cause very long-lasting and diffuse contamination of water resources
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H332 Harmful if inhaled
- H411 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
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in Dutch, English, English (US), 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-Aminoazophenylene
- 1,2,3-1h-benzotriazole
- 1H-1,2,3-Benzotriazole
- 1H-Benzotriazole
- 2,3-Diazaindole
- Azimidobenzene
- Aziminobenzene
- Benzene azimide
- Benzisotriazole
- Benztriazole
Frequently asked questions
What is benzotriazole commonly used for?
Benzotriazole is primarily used as a corrosion inhibitor in metalworking fluids, antifreeze, and industrial cooling systems, as well as a reagent in organic synthesis and photoresist formulations.
What is the chemical formula and molecular weight of benzotriazole?
The chemical formula is C₆H₅N₃, and the molecular weight is 119.12 g/mol.
How should benzotriazole be stored?
Store benzotriazole at ambient temperature in a cool, dry place, away from incompatible substances and sources of ignition.
What grades of benzotriazole does Molekula supply?
Molekula supplies technical-grade benzotriazole suitable for industrial and research applications; purity may vary—please confirm specifications for your needs.
Can Molekula supply benzotriazole in bulk quantities?
Yes, Molekula can provide benzotriazole in bulk quantities—contact our sales team for pricing, lead times, and packaging options.
What documentation comes with a benzotriazole order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a packing slip; additional documentation (e.g., batch-specific reports) may be provided upon request.
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.