1H-Benzotriazole Chemical Properties
- Melting point:
- 97-99 °C(lit.)
- Boiling point:
- 204 °C (15 mmHg)
- 1,36 g/cm3
- vapor density
- 4.1 (vs air)
- vapor pressure
- 0.04 mm Hg ( 20 °C)
- refractive index
- 1.5589 (estimate)
- Flash point:
- 170 °C
- storage temp.
- 1.6(at 20℃)
- Powder, Granules, Crystals, Needles or Flakes
- White to yellow-beige
- 6.0-7.0 (100g/l, H2O, 20℃)suspension
- Water Solubility
- 25 g/l in water (20 ºC)
- Stable, but may be light sensitive. Incompatible with strong oxidizing agents, heavy metals.
- CAS DataBase Reference
- 95-14-7(CAS DataBase Reference)
- NIST Chemistry Reference
- EPA Substance Registry System
- 1,2,3-Benzotriazole (95-14-7)
- Hazard Codes
- Risk Statements
- Safety Statements
- WGK Germany
- Autoignition Temperature
- 400 °C
- Hazard Note
- HS Code
- Hazardous Substances Data
- 95-14-7(Hazardous Substances Data)
- LD50 orally in Rabbit: 560 mg/kg LD50 dermal Rabbit > 2000 mg/kg
1H-Benzotriazole Usage And Synthesis
yellow to beige solid
Benzotriazole (BT) is an anticorrosive agent well known for its use in aircraft deicing and antifreeze fluids but also used in dishwasher detergents. in vivo.
ChEBI: The simplest member of the class of benzotriazoles that consists of a benzene nucleus fused to a 1H-1,2,3-triazole ring.
White to light tan crystals or white powder. No odor.
Air & Water Reactions
Dust may form an explosive mixture in air. Slightly soluble in water.
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.
Highly toxic by ingestion. May explode under vacuum distillation.
ACUTE/CHRONIC HAZARDS: When heated to decomposition 1H-Benzotriazole emits toxic fumes. 1H-Benzotriazole can react violently during vacuum distillation.
Flash point data are not available for 1H-Benzotriazole. 1H-Benzotriazole is probably combustible.
Chronic (2-year) feeding studies were conducted. Rats were given 0, 6700, or 12,000 ppm in feed for 78 weeks and held for an additional 26 weeks. Mice were given 0, 11,700, or 23,500 ppm in feed in 104 weeks. The authors concluded that under the conditions shown in this study, there were no convincing evidence that 1-H-benzotriazole was carcinogenic in rats or mice.
1,2,3-Benzotriazole crystallises from toluene, CHCl3, Me2NCHO or a saturated aqueous solution, and is dried at room temperature or in a vacuum oven at 65o. Losses are less if the material is distilled in a vacuum. CAUTION: may EXPLODE during distillation; necessary precautions must be taken. [Damschroder & Peterson Org Synth Coll Vol III 106 1955, Beilstein 26 III/IV 93.]
1H-Benzotriazole Preparation Products And Raw materials
- 5-(2-METHYL-4-NITROPHENYL)FURAN-2-CARBOXYLIC ACID [2-(3-CHLORO-4-METHYL-PHENYL)]-2H-BENZOTRIAZOLE
- 3-HYDROXY-3H-BENZOTRIAZOLE-5-SULFONIC ACID DIMETHYLAMIDE
- 3A,7A-DIHYDRO-BENZOTRIAZOLE-1-CARBOTHIOIC ACID ALLYLAMIDE,3A,7A-DIHYDRO-N-(2-PROPENYL)-1H-BENZOTRIAZOLE-1-CARBOTHIOAMIDE
- Tolytriazole sodium salt
- 1-Hydroxybenzotriazole hydrate
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