© 2026 Nanjing Finechem Holdings Co., Ltd,
All Right Reserved
Product Name: 3-Tert-Butyl-4-Hydroxyanisole Chemical Formula: C11H16O2 Synonyms: 2(1,1-Dimethylethyl)-4-methoxyphenol, Butylated Hydroxyanisole CAS Number: 121-00-6 Recommended Use: Antioxidant in food and pharmaceuticals Supplier: Manufacturer or distributor contact details available on the packaging label Emergency Telephone: Refer to local Poison Control Center or emergency services UN Number: Not regulated
Hazard Classification: Eye irritation (Category 2), Skin irritation (Category 2), Specific target organ toxicity - single exposure (Category 3) Signal Word: Warning Hazard Statements: Causes skin and eye irritation, may cause respiratory irritation Pictograms: Exclamation mark Precautionary Statements: Avoid breathing dust or vapors, wash hands thoroughly after handling, use only outdoors or in well-ventilated area, wear protective gloves, clothing, and eye protection Routes of Exposure: Skin contact, eye contact, inhalation, ingestion Target Organs: Eyes, skin, respiratory system
Chemical Name: 3-Tert-Butyl-4-Hydroxyanisole Concentration: >95% Impurities: Trace unidentified organics <5% Additives: None reported EC Number: 204-327-1
Inhalation: Get to fresh air immediately, ensure open air flow, seek medical attention if symptoms persist Skin Contact: Remove contaminated clothing, wash skin with plenty of soap and water, consult physician if irritation continues Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, call physician if discomfort persists Ingestion: Rinse mouth thoroughly, do not induce vomiting, drink water if conscious, call physician immediately Symptoms to Watch: Redness, irritation, difficulty breathing, headache, nausea
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide Unsuitable Extinguishing Media: Direct water jets (may spread chemical) Specific Hazards: Combustion yields carbon monoxide, carbon dioxide, smoke, irritating vapors Protective Equipment: Full protective suit, self-contained breathing apparatus Firefighting Procedures: Remove containers from fire if safe, use water spray to cool surfaces, contain contaminated water
Personal Precautions: Use personal protective equipment, ventilate area, keep unprotected persons away Environmental Precautions: Prevent product from entering drains, surface water, or soil Spill Cleanup Methods: Absorb spillage with inert material (sand, earth), collect in suitable chemical waste container, wash affected area with water Disposal: Dispose according to local, regional, national regulations Decontamination: Wash hands and affected skin with soap and water after handling
Handling: Use in well-ventilated places, avoid prolonged or repeated contact with skin and eyes, do not breathe dust Storage Conditions: Store tightly closed in a cool, dry, well-ventilated place away from direct sunlight and incompatible substances Incompatibilities: Strong oxidizing agents, strong acids, strong bases Hygiene Practices: Wash hands before breaks and after work, do not eat, drink, or smoke when using this material Packaging Materials: Store in original container or containers made of compatible, chemical-resistant material
Exposure Limits: ACGIH TLV 10 mg/m3 (inhalable fraction) Engineering Controls: Use local exhaust ventilation or process enclosure, ensure emergency eyewash and shower stations near worksite Personal Protection: Wear chemical-resistant gloves (nitrile or neoprene), safety goggles, protective clothing (lab coat or apron), use respiratory protection if ventilation is inadequate Work Practices: Keep containers closed when not in use, avoid generating or breathing dust Environmental Exposure Limits: Follow guidelines for industrial and laboratory discharge
Appearance: White to pale yellow, crystalline powder Odor: Mild, faint aromatic Odor Threshold: Data not available pH: Not determined Melting Point: 48-63°C Boiling Point: >264°C Flash Point: >140°C (closed cup) Evaporation Rate: Not determined Flammability: May be combustible at high temperature Vapor Pressure: <1 mm Hg @ 20°C Vapor Density: Not determined Solubility: Soluble in alcohol, ether, oils; slightly soluble in water Partition Coefficient (log Kow): 2.6 - 3.5 Autoignition Temperature: Data not found Decomposition Products: Carbon oxides on heating Viscosity: Not applicable (solid)
Chemical Stability: Stable under recommended storage conditions and normal use Reactivity: Not reactive under normal handling Hazardous Reactions: Exothermic reaction possible with strong oxidizing agents Decomposition Products: Carbon monoxide, carbon dioxide, fumes Conditions to Avoid: Exposure to heat, ignition sources, moisture Incompatible Materials: Strong oxidizers, strong acids, bases
Likely Routes of Exposure: Inhalation, skin contact, eye contact, ingestion Acute Toxicity: LD50 (oral, rat) 2,000-5,000 mg/kg; LD50 (skin, rabbit) >2,000 mg/kg Irritation: Causes moderate eye and skin irritation Sensitization: Not considered a skin sensitizer under normal exposure Chronic Effects: Prolonged, repeated exposure may cause reversible liver or kidney changes in animals at high doses Carcinogenicity: IARC classified as Group 2B (possibly carcinogenic to humans) based on animal data Mutagenicity: No evidence in standard tests Other Data: No reproductive toxicity observed at relevant exposure levels
Ecotoxicity: Toxic to aquatic life at high concentrations Aquatic Toxicity: LC50 (fish, 96h): 6.7 mg/L; EC50 (daphnia, 48h): 1.1 mg/L Persistence and Degradability: Moderately persistent, slowly biodegradable Bioaccumulation Potential: Potential for bioaccumulation in aquatic organisms (log Kow >2) Mobility in Soil: Low due to partial water insolubility Impact on Sewage Treatment: May inhibit microorganisms at high concentrations
Waste Treatment Methods: Dispose of in accordance with federal, state, and local regulations Incineration: Suitable for chemical incineration in approved facility Container Disposal: Rinse thoroughly, remove labels, discard as hazardous waste Avoid Release: Do not allow material into surface or groundwater, sewage system
UN Number: Not assigned (not regulated for transport under most conditions) UN Proper Shipping Name: Not regulated Transport Hazard Class: Not applicable Packing Group: Not applicable Marine Pollutant: No Special Precautions: Transport in accordance with national and local requirements, keep container tightly closed Additional Transport Information: Avoid extreme heat, direct sunlight, and moisture during transportation
OSHA: Not specifically regulated as hazardous SARA 313: Not listed EPCRA: Not subject to emergency planning TSCA: Listed REACH: Registered, subject to restrictions for food contact California Proposition 65: Not listed as a known carcinogen or reproductive toxin International Inventory: Listed on major chemical inventories including EINECS, DSL, ENCS, AICS, and KECI Labelling: Proper labeling required according to GHS classification Other Regulation: Use only as permitted in regulated applications (food, cosmetics, pharmaceuticals)
