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Product Name: Tert Butylhydroquinone
Chemical Formula: C10H14O2
CAS Number: 1948-33-0
Synonyms: TBHQ, 2-tert-Butylhydroquinone, tert-Butyl-1,4-benzenediol
Molecular Weight: 166.22 g/mol
Recommended Use: Food antioxidant, industrial chemical stabilizer
Supplier Contact: Refer to manufacturer or distributor contact information
Emergency Phone: Refer to local emergency services or relevant hotlines
GHS Classification: Acute Toxicity (Oral) Category 4, Skin Irritation Category 2, Eye Irritation Category 2A
Signal Word: Warning
Hazard Statements: Harmful if swallowed. Causes skin and serious eye irritation. May cause allergic skin reactions. Dust may cause respiratory irritation.
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing dust. Wear protective gloves and eye/face protection. Wash skin thoroughly after handling. Do not eat, drink, or smoke when handling the substance. Remove contaminated clothing and wash before use.
Chemical Name: Tert Butylhydroquinone
Concentration: >99%
CAS Number: 1948-33-0
Impurities or Stabilizing Additives: Minimal, if any, dependent on supplier specification. Check Certificate of Analysis for batch-specific purity.
Inhalation: Move person to fresh air. Seek medical advice if symptoms persist. Remove to uncontaminated area if breathing difficulty develops.
Skin Contact: Wash affected area with plenty of soap and water. Remove contaminated clothing. Seek medical attention if irritation develops or persists.
Eye Contact: Rinse eyes cautiously with water for several minutes. Remove contact lenses if easy to do. Continue rinsing. Get medical attention if irritation occurs.
Ingestion: Rinse mouth. Do not induce vomiting. Seek immediate medical attention. Never give anything by mouth to an unconscious person.
Most Important Symptoms: Irritation, redness, discomfort in eyes, skin, and respiratory tract.
Note to Physicians: Symptomatic and supportive treatment.
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical powder, or carbon dioxide. Select extinguishing media suitable for surrounding fire.
Specific Hazards: Decomposition may produce irritating or toxic fumes including carbon monoxide and carbon dioxide.
Protective Equipment: Firefighters require self-contained breathing apparatus and suitable protective gear.
Explosion Hazards: Fine dust dispersed in air can create a potential for a dust explosion.
Special Procedures: Cool containers exposed to fire with water spray. Avoid breathing combustion products.
Personal Precautions: Use personal protective equipment. Avoid breathing dust. Ensure adequate ventilation.
Environmental Precautions: Prevent product from entering drains, surface water, or soil. Notify authorities if large quantities enter waterways.
Methods for Containment: Contain spill using inert absorbent material.
Cleanup Methods: Sweep or shovel material into suitable containers. Minimize dust generation. Wash spill area with water.
Disposal: Dispose of waste in accordance with local, regional, and federal regulations.
Handling: Handle with care. Use only in well-ventilated areas. Avoid contact with skin, eyes, and clothing. Prevent formation of dust and aerosols.
Storage: Store in tightly closed original container. Keep in a cool, dry, and well-ventilated place. Protect from direct sunlight, moisture, and incompatible materials.
Incompatible Materials: Strong oxidizers, strong acids.
Hygiene Requirements: Practice good industrial hygiene. Wash thoroughly after handling. Do not eat, drink, or smoke while using product.
Occupational Exposure Limit: Not established specifically for TBHQ. Handle in accordance with occupational exposure guidelines for similar dusts.
Engineering Controls: Use local exhaust ventilation to minimize exposure.
Personal Protective Equipment:
Eye Protection: Safety goggles or face shield
Skin Protection: Protective gloves made from resistant materials (nitrile recommended), lab coat or apron
Respiratory Protection: Approved particulate respirator where dust generation occurs
General Hygiene: Wash hands and forearms thoroughly after handling. Do not allow contaminated clothing to remain in contact with skin.
Appearance: White to off-white crystalline powder
Odor: Faint aromatic
Odor Threshold: Not available
pH: Slightly acidic to neutral in water
Boiling Point: Decomposes before boiling
Melting Point: 126-129°C
Solubility: Moderately soluble in water, soluble in ethanol and organic solvents
Vapor Pressure: Negligible at room temperature
Relative Density: About 1.05 g/cm3
Partition Coefficient (log Kow): Estimated 1.5
Evaporation Rate: Not applicable (solid material)
Flash Point: Above 180 °C (closed cup)
Flammability: May form combustible dust-air mixtures
Auto-ignition Temperature: Not determined
Explosive Properties: Dusts may pose explosion risk
Chemical Stability: Stable under normal conditions
Conditions to Avoid: Heat, sparks, open flames, moisture, and strong oxidizing agents
Incompatible Materials: Strong acids, strong oxidizers
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, irritant fumes
Polymerization: Hazardous polymerization does not occur
Routes of Exposure: Inhalation, skin, eye contact, ingestion
Acute Toxicity: Oral LD50 (rat) 700 mg/kg
Skin Corrosion/Irritation: Can cause skin irritation
Serious Eye Damage/Irritation: May cause eye irritation
Respiratory Sensitization: Dust may irritate mucous membranes
Carcinogenicity: Not classified as carcinogen by IARC, NTP, or OSHA
Reproductive Toxicity: No data showing reproductive hazard
Chronic Effects: Prolonged exposure may cause dermatitis and allergic reactions
Symptom Description: Redness, itching, irritation, possible allergic reaction
Epidemiological Data: No evidence from food use or workplace control indicates significant hazard at permitted exposure levels
Aquatic Toxicity: Toxic to aquatic life in high concentrations
Persistence and Degradability: Moderately persistent, slowly biodegradable in the environment
Bioaccumulative Potential: Low to moderate
Mobility in Soil: Binds to soil constituents, not expected to migrate significantly
Environmental Precautions: Prevent release to waterways and soil. Large spills may affect aquatic organisms
Other Effects: No information available regarding ozone depletion or global warming potential
Waste Disposal Methods: Handle waste in accordance with local, regional, and federal regulations. Place contaminated material in approved containers. Do not flush to sewer.
Unused Product: Dispose of unused material through a licensed chemical waste disposal contractor
Contaminated Packaging: Triple rinse and offer for recycling or disposal if permitted
Environmental Hazards: Avoid uncontrolled release to environment
Special Precautions: Wear appropriate protective equipment during cleanup and disposal processes
UN Number: Not regulated for transport under most modes (check regional requirements)
Proper Shipping Name: Not classified as hazardous under USDOT, IATA, IMO
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Marine Pollutant: Not designated
Special Transport Precautions: Use sealed containers. Prevent package breakage and spillage. Ensure shipping documents describe the substance accurately.
Additional Notes: Comply with all national and local transportation regulations
TSCA Status: Listed in the United States
EINECS/ELINCS Number: 217-752-2 (Listed in Europe)
Food Additive Regulations: Approved as an antioxidant in foods up to 0.02% of fat content under FDA, EFSA and other authorities; observe national limits
OSHA Hazard Communication: This material is subject to the OSHA Hazard Communication Standard
WHMIS Status: Controlled product in Canada
SARA 313: Not subject to reporting
California Proposition 65: Not listed
Other Regulatory Notes: Check regional, national, and local requirements for worker safety and environmental protection
