Product Name: 1H-1,2,3-Triazole
Synonyms: Benzotriazole, 1,2,3-Triazole
CAS Number: 288-36-8
Recommended Use: Used in chemical synthesis, corrosion inhibitors, pharmaceuticals, and agriculture
Supplier Details: Manufacturer or distributor details typically include address, emergency contact number, and email for quick response
Emergency Contact: National poison control centers or emergency helpline
Classification: Eye irritation Category 2, Acute toxicity Oral Category 4, Skin Sensitization Category 1
Signal Word: Warning
Hazard Statements: Causes serious eye irritation, may cause allergic skin reaction, harmful if swallowed
Symbol: Exclamation mark (GHS07)
Precautionary Statements: Wear protective gloves and eye protection, wash exposed skin thoroughly after handling, avoid breathing dust or vapors, contaminated clothing should not be allowed out of workplace, do not eat, drink or smoke during use, in case of inadequate ventilation, wear respiratory protection
Chemical Name: 1H-1,2,3-Triazole
CAS Number: 288-36-8
Concentration: >98% by weight (technical grade)
Impurities: Trace organics or residual solvents depending on source, typically less than 1%
Inhalation: Remove from exposure, bring to fresh air, keep person at rest. Seek medical advice if symptoms develop such as headache, dizziness, or difficulty breathing.
Skin Contact: Remove contaminated clothing immediately. Wash skin thoroughly with soap and water. If irritation or allergic reaction appears, get medical attention.
Eye Contact: Rinse eyes with clean water for at least 15 minutes, holding eyelids open. Remove contact lenses if present and easy to do. Get medical help if pain, redness, or vision problems occur.
Ingestion: Do not induce vomiting. Rinse mouth with water. Seek prompt medical advice. If person becomes unconscious, do not give anything by mouth.
Suitable Extinguishing Media: Water spray, dry powder, CO₂, or foam may be used. Avoid using direct water jet on chemical fires.
Special Hazards: In case of fire, toxic fumes such as nitrogen oxides and carbon monoxide can form.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and protective clothing reliant on local procedures.
Other Advice: Move containers away if it can be done safely. Cool exposed containers with water spray. Prevent spillage from entering drains or water sources.
Personal Precautions: Use personal protective equipment including gloves, protective clothing, eye/face protection, and suitable mask. Avoid breathing dust or vapor.
Environmental Precautions: Do not allow material to enter public sewers or surface water systems. Notify responsible authorities if large spills contaminate waterways.
Spill Cleanup Methods: Collect spillage using non-sparking tools and place in labeled, tightly-sealed drums for disposal. Ventilate the area and wash spill site after material pickup is complete.
Handling: Use in a well-ventilated area. Avoid inhalation, ingestion, and contact with skin or eyes. Prevent release into environment. Use proper personal protective gear. Wash hands thoroughly after manipulation.
Storage: Store in cool, dry, well-ventilated area away from incompatible materials such as strong oxidizing agents. Keep container tightly closed when not in use. Store away from food, beverage, and animal feed. Secure container to avoid spills.
Exposure Limits: No Occupational Exposure Limits (OEL) have been established by OSHA, ACGIH, or NIOSH for this substance.
Engineering Controls: Use process enclosures, local exhaust ventilation, or other suitable engineering controls.
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), safety goggles, laboratory coats or coveralls, and respiratory protection if dust or vapor formation is likely.
Hygiene: Do not eat, drink or smoke during work. Remove contaminated clothing and wash all exposed skin after handling.
Form: Crystalline solid or powder
Color: White to off-white
Odor: Mild, unpleasant, characteristic
Molecular Weight: 69.05 g/mol
Melting Point: 120-123°C
Boiling Point: 260-262°C (decomposes)
Density: 1.33 g/cm³ at 20°C
Solubility: Freely soluble in water, ethanol, acetone; soluble in most organic solvents
Vapor Pressure: Not available; considered low at standard conditions
pH: Usually neutral to weakly acidic in solution
Flash Point: Not flammable under normal laboratory conditions; may burn at high temperatures
Chemical Stability: Stable under recommended storage conditions. Sensitive to excessive heat.
Reactivity: May react with strong oxidizers, acids, or bases under certain conditions to produce hazardous compounds.
Conditions to Avoid: Excessive heat, moisture, direct sunlight, strong oxidizing or reducing agents.
Decomposition Products: Hazardous gases including nitrogen oxides and carbon monoxide may be released during thermal decomposition.
Acute Toxicity (Oral, LD50, rat): 700 mg/kg
Irritation: Causes eye irritation; can cause skin irritation and sensitization with repeated contact.
Inhalation: Dust or vapor may cause headache, dizziness, and respiratory discomfort at elevated exposures.
Chronic Effects: Prolonged or repeated exposure may cause allergic reactions, skin sensitization, or respiratory effects in sensitive individuals.
Carcinogenicity/Mutagenicity/Reproductive Effects: No known carcinogenic, mutagenic, or reproductive toxicity data for 1H-1,2,3-Triazole.
Ecotoxicity: Toxicity to aquatic organisms: LC50 (fish, 96 h): Estimated around 100 mg/L or higher; not classified as acutely toxic to aquatic life at expected release concentrations.
Persistence and Degradability: Moderately persistent in soil and water. Biodegradation expected but not rapid.
Bioaccumulation: Not expected to bioaccumulate significantly.
Mobility: Soluble in water, may migrate in soil and leach into groundwater if released.
Other Hazards: Harmful to aquatic environments if released in significant quantities.
Disposal Methods: Dispose of as hazardous chemical waste in accordance with local, state, and national regulations. Do not discharge to sewers or the environment.
Contaminated Packaging: Packaging containing remnants of triazole should be handled as hazardous, triple rinsed, punctured, and then sent for authorized disposal.
Recommended Disposal Process: Incineration in an approved facility designed for organic chemicals is recommended; do not landfill unused material.
UN Number: Not classified as dangerous for transport under most regulatory frameworks
Proper Shipping Name: 1H-1,2,3-Triazole, not regulated
Packing Group: Not assigned
Hazard Class: Not regulated as a hazardous material in ground, air, or sea transportation.
Special Precautions: Standard chemical transport procedures apply; ensure packaging is robust and prevents accidental release.
Occupational Safety: No OSHA or ACGIH exposure limits. Use good industrial hygiene and safety practices.
TSCA Status: Listed for commercial import and use under the US Toxic Substances Control Act
Other Regulatory Listings: Listed on EINECS (EU) and DSL (Canada). Not classified as hazardous for supply under most regional regulations.
Environmental Legislation: Ensure compliance with chemical storage, reporting, and disposal regulations under RCRA, EPCRA, Clean Water Act, and local provisions.
Label Requirements: Must use appropriate GHS labels including warning phrases, hazard and precautionary statements.
