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Product Name: 2,3,5-Triphenyltetrazolium Chloride
Synonyms: Tetrazolium red, TTC
Chemical Formula: C19H15ClN4
CAS Number: 298-96-4
Manufacturer: Standard laboratory suppliers
Recommended Use: Laboratory reagent, cytochemical stain, indicator in microbiology
Contact for Emergency: Company emergency hotline or local poison control
Product Code: As labeled by individual supplier
Classification: Irritant to eyes, skin, respiratory tract; category not classified as a carcinogen
Hazard Pictogram: Exclamation mark (if labeled for irritant risk)
Signal Word: Warning
Hazard Statements: Causes skin irritation, causes serious eye irritation, harmful if swallowed
Precautionary Statements: Avoid contact with skin or eyes, avoid dust generation, do not breathe dust or vapor, wash hands thoroughly after handling
Symptoms of Exposure: Redness, itching, burning sensation on skin and eyes, possible respiratory discomfort
Chemical Name: 2,3,5-Triphenyltetrazolium Chloride
Percent: 98–100% pure
Impurities: Trace water, minor related organic compounds
Ingredient Classification: Not considered hazardous at typical laboratory amounts, but handle as a chemical irritant
Molecular Weight: 334.8 g/mol
Inhalation: Move person to fresh air, monitor for trouble breathing, seek medical attention if symptoms persist
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with water and mild soap, seek medical care for irritation or persistent symptoms
Eye Contact: Rinse gently with clean water for at least 15 minutes, hold eyelids open, remove contact lenses if present, seek medical advice
Ingestion: Rinse mouth with water, do not induce vomiting, call physician immediately and provide material information
Most Important Symptoms: Irritation to exposed tissues, possible allergic response
Immediate Medical Attention Needed: For persistent symptoms or severe exposure
Suitable Extinguishing Media: Dry chemical, CO2, foam, water spray
Hazards from Combustion Products: Toxic fumes including nitrogen oxides, carbon monoxide, hydrochloric acid gases
Special Protective Equipment: Firefighters should wear NIOSH-approved self-contained breathing apparatus, full protective clothing
Advice for Firefighters: Try to contain contaminated runoff, ventilate enclosed areas after fire is out
Explosion Hazards: Not considered explosive, but dust may form flammable mixtures with air under rare conditions
Personal Precautions: Use personal protective gear including gloves, goggles, lab coat, N95 dust mask
Environmental Precautions: Avoid spill into drains, waterways, or soil
Containment: Ventilate area, avoid raising dust, isolate spill area
Clean-up Methods: Sweep up loose material carefully, transfer to sealed container for disposal, wipe area with damp towels
Decontamination: Wash affected surfaces with soapy water, ventilate and collect washings for waste disposal
Incompatible Materials for Clean-up: Avoid using strong acids or oxidizers during clean-up
Precautions during Handling: Keep container tightly closed, avoid breathing dust, use only in chemical fume hood, prevent contact with eyes, skin, clothing
General Hygiene Practices: Wash hands and exposed skin after use, do not eat, drink, or smoke in lab area
Storage Conditions: Store in cool, dry, well-ventilated place, keep away from direct sunlight, moisture, sources of ignition
Incompatible Storage: Segregate from strong acids, bases, and oxidizing materials
Package Integrity: Ensure containers are labeled, undamaged, and secure on sturdy shelves
Control Parameters: No established occupational exposure limits for this compound
Ventilation: Operate under chemical fume hood or with local exhaust
Personal Protective Equipment: Nitrile or latex gloves, safety goggles or face shield, lab coat, use of N95 respirator for dusty situations
Hygiene Measures: Avoid touching face, remove lab coat and gloves after use, wash thoroughly
Engineering Controls: Maintain ventilation and local exhaust, install spill containment if risk assessment justifies
Environmental Exposure Controls: Prevent run-off into drains or surface waters, use secondary containment if needed
Appearance: Red crystalline powder
Odor: Odorless
Solubility: Easily dissolves in water, alcohol
pH: Neutral to slightly acidic in solution
Melting Point: 229–233 °C (decomposition)
Boiling Point: Not applicable (decomposes)
Vapor Pressure: Negligible under normal conditions
Density: Approximately 1.3 g/cm3 at 20 °C
Flash Point: No data, not considered highly flammable
Other Data: Stable under recommended storage; keep away from light for color stability
Chemical Stability: Stable under normal handling and storage
Conditions to Avoid: Moisture, direct sunlight, high temperature, sources of ignition
Materials to Avoid: Strong acids, strong oxidizing agents, reducing agents
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, chlorine compounds, irritating organic vapors
Hazardous Polymerization: Not reported
Reactivity: Does not polymerize or undergo rapid hazardous reaction under ordinary conditions
Likely Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Effects: May produce irritation to eyes, skin, respiratory tract, stomach upset if swallowed
Chronic Effects: No conclusive human data, avoid repeated exposure
LD50 (oral, rat): Approximately 500 mg/kg (literature values vary slightly)
Signs and Symptoms: Redness, drying, cracking of skin, burning in throat, coughing or dizziness if inhaled
Carcinogenicity: Not listed as a carcinogen by IARC, NTP, or OSHA
Mutagenicity: Not enough data for assessment
Sensitization: Possible sensitizer for susceptible groups
Ecotoxicity: Toxic to aquatic organisms at significant concentrations, possible bioaccumulation not well documented
Persistence and Degradability: Likely to degrade slowly in the environment
Mobility in Soil: Moderate, but spills may reach groundwater in porous soils
Bioaccumulative Potential: Limited evidence for significant accumulation in higher organisms
Other Adverse Effects: Chemical by-products from transformation may be hazardous
Precautionary Environmental Measures: Prevent uncontrolled releases, treat spill water as hazardous
Disposal Methods: Collect residue and contaminated materials in clearly labeled hazardous chemical waste receptacle
Recommended Waste Treatment: Dispose by incineration in accordance with local, national regulations, use approved chemical treatment/
Special Precautions: Consult local hazardous waste authority and company council on disposal, do not pour down drain
Packaging Disposal: Contaminated containers must be disposed as hazardous material
UN Number: Not assigned for laboratory shipment, check commercial bulk shipping regulations
Transport Hazard Class: No specific DOT/ADR hazard classification
Proper Shipping Name: Laboratory Chemical, N.O.S. (Not Otherwise Specified)
Packing Group: Not specified for smaller packaging
Environmental Hazards: Not a marine pollutant at common quantities, avoid bulk or unchecked shipment near water sources
Special Transport Precautions: Store in leak-proof, labeled containers; ship with chemical documentation
Regulatory Notes: Confirm with shipping and import/export authorities for updates
TSCA Status: Listed on US Toxic Substances Control Act Inventory
OSHA Hazard: Regulated as laboratory chemical for employee protection
DSL/NDSL (Canada): Listed
EU Regulation: Not classified under CLP as hazardous chemical at standard use amount
WHMIS Classification: D2B (Toxic material causing other chronic effects)
Other Regulations: Compliant with REACH pre-registration, not on California Prop 65 list
Labeling Requirements: Use GHS signal word and pictogram where applicable; indicate product name, risk phrases, supplier contact information
