Substance profile
1H-Benzotriazole
1H-Benzotriazole is needles from chloroform or benzene with a no odor.
01 · Identification
What 1H-Benzotriazole is
1H-Benzotriazole is needles from chloroform or benzene with a no odor. Its molecular formula is C6H5N3 and its molecular weight is 119.12 g/mol. It boils at 260 °C, melts at 100 °C.
Under the GHS it carries the signal word Warning.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H411 | Toxic to aquatic life with long lasting effects. |
03 · Physical and chemical properties
1H-Benzotriazole properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 260 °C (500 °F) | decomposes | HSDB |
| 204 °C (399.2 °F) | at 15 mmHg (reduced pressure) | HSDB | |
| 203.89 °C (399 °F) | at 15 mmHg (reduced pressure) | CAMEO | |
| Melting point | 100 °C (212 °F) | HSDB | |
| 98.5 °C (209.3 °F) | ICSC | ||
| 98.89 °C (210 °F) | range, midpoint shown | CAMEO | |
| Density | 1.36 g/cm³ | ICSC | |
| 1.36 g/cm³ | at 20 °C | HSDB | |
| Solubility | Slightly soluble in water | HSDB | |
| In water, 1-5 g/L at 23.7 °C | at 23.7 °C | HSDB | |
| In water, 1.98X10+4 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 0.0375 mmHg | at 20 °C | ICSC |
| 0.075 mmHg | below this value, at 25 °C | HSDB | |
| Flash point | 170 °C (338 °F) | HSDB | |
| 192.5 °C (378.5 °F) | range, midpoint shown | ICSC | |
| Autoignition temperature | 210 °C (410 °F) | ICSC | |
| Lower explosive limit (LEL) | May detonate at 220 °C or during vacuum distillation. | at 220 °C | HSDB |
| Vapor density | 4.1 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 1H-Benzotriazole
Storage conditions
Keep container tightly closed in a dry and well-ventilated place.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Strong oxidizing agents, heavy metals.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
The triazoles are a group of highly explosive materials that are sensitive to heat, friction, and impact. Sensitivity varies with the type substitution to the triazole ring. Metal chelated and halogen substitution of the triazol ring make for a particularly heat sensitive material. Azido and nitro derivatives have been employed as high explosives. No matter the derivative these materials should be treated as explosives.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1H-Benzotriazole in the storage compatibility matrix →