Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Info
Name: 1,2,4-Triazole
Alias: s-Triazole, 1H-1,2,4-Triazole
CAS No.: 288-88-0
Molecular Formula: C2H3N3
Molecular Weight: 69.07
2. Physical & Chemical Properties
Physical Properties
- Appearance: White crystalline powder
- Odor: Slight ammonia-like odor
- Solubility: Freely soluble in water, methanol, ethanol; slightly soluble in acetone; insoluble in benzene, ether, aliphatic hydrocarbons
- Melting Point: 120–122 ℃
- pH (1% aqueous solution): 7.5–8.5, weak alkalinity
- Hygroscopy: Slightly hygroscopic under high humidity
- Crystal form: Needle crystal with good fluidity after drying
- Volatility: Sublimes slightly at high temperature
Chemical Properties
- Molecular structure: Five-membered nitrogen heterocycle containing three nitrogen atoms, two tautomeric structures (1H / 4H)
- N-H active hydrogen: Easy to generate N-substituted derivatives via alkylation, halogenation reaction
- Weak alkalinity: Heterocyclic nitrogen can combine with inorganic acids to form triazole salts
- Thermal stability: Stable below 110℃; above melting point slowly sublimates without obvious decomposition
- Photostability: Stable under normal light, no discoloration after long-term sealed storage
- Metal coordination: Nitrogen atoms have lone pair electrons, can form complexes with copper, zinc, cobalt and other metal ions
- Corrosion inhibition: Adsorb on metal surface to form protective film, serve as metal rust inhibitor
- Compatibility: Compatible with most organic solvents, pesticide intermediates; incompatible with strong oxidants, concentrated strong acid
3. Main Application Fields
1. Pesticide Intermediate (Core Application)
Key skeleton raw material for triazole fungicides (tebuconazole, propiconazole, diniconazole); used to synthesize high-efficiency broad-spectrum fungicides for crop powdery mildew, rust disease control.
2. Pharmaceutical Intermediate
Synthetic raw material for triazole anti-fungal APIs (fluconazole, itraconazole, anastrozole); construct nitrogen heterocyclic pharmacophore of anti-tumor and anti-infective drugs.
3. Metal Corrosion Inhibitor
Additive for circulating cooling water, metal cutting fluid, copper polishing solution; inhibit oxidation rust of copper, iron and alloy materials.
4. Electronic Chemical Auxiliary
Surface treatment agent for circuit board copper foil; improve copper surface stability and oxidation resistance.
5. Organic Synthesis Raw Material
Reagent for preparing triazole derivatives, UV absorbers, polymer crosslinking modifiers.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 288-88-0 |
| Molecular Formula | C2H3N3 |
| Molecular Weight | 69.07 |
| Appearance | White crystalline powder |
| GC Purity | Industrial Grade ≥98.0%; Pharma Grade ≥99.5% |
| Melting Range | 120.0 ~ 122.0 ℃ |
| Moisture Content (KF) | ≤0.10% |
| Residue on Ignition | ≤0.10% |
| Heavy Metals (Pb) | ≤10 ppm |
| pH (1% aqueous solution) | 7.5–8.5 |
| Bulk Package | 25kg PE lined fiber drum / aluminum foil vacuum bag |
| Storage Condition | Hermetic cool dry warehouse ≤25℃; isolate humid air, strong oxidants and acidic raw materials |
| Transportation Rule | Heterocyclic amine solid, moisture-proof sealed packaging |
| Shelf Life | 24 months under intact sealed packaging |
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