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Product Name: Butylated Hydroxytoluene
Chemical Name: 2,6-Di-tert-butyl-p-cresol
CAS Number: 128-37-0
Manufacturer: Leading chemicals supplier information available on shipment documentation
Recommended Use: Antioxidant in food, pharmaceuticals, cosmetics, lubricants, and industrial applications
Synonyms: BHT, DBPC, 2,6-Di-tert-butyl-4-methylphenol
Contact Information: Refer to supplier safety contact on purchase documents
GHS Classification: Acute toxicity (oral) Category 5, Skin irritation Category 3, Eye irritation Category 2B, Hazardous to aquatic life Category 1
Pictogram: Exclamation mark, Environment
Signal Word: Warning
Hazard Statements: May cause mild skin irritation, causes eye irritation, harmful if swallowed in large amounts, very toxic to aquatic life with long lasting effects
Precautionary Statements: Avoid release to the environment, wash hands thoroughly after handling, use personal protective equipment as required
Chemical Name: 2,6-Di-tert-butyl-4-methylphenol
Common Name: Butylated Hydroxytoluene (BHT)
CAS Number: 128-37-0
Concentration: ≥ 99% by weight
Impurities: Trace levels of related alkylated phenols (by-products), all below safety thresholds defined by regulatory requirements
Inhalation: Move to fresh air, keep at rest in a position comfortable for breathing, seek medical advice if symptoms persist
Skin Contact: Wash off immediately with plenty of soap and water. Remove contaminated clothing and wash before reuse. Get medical attention for persistent irritation.
Eye Contact: Immediately flush eyes with gently flowing water for at least 15 minutes. Remove contact lenses if present and easy to do; continue rinsing. Get medical attention.
Ingestion: Rinse mouth thoroughly with water, do not induce vomiting, seek medical attention in case of discomfort or if large quantities are ingested.
Most Important Symptoms: Mild irritation of skin or eyes, temporary nausea or headache if exposed to high doses
Advice for First Responders: Use protective gloves, avoid direct contact, provide symptomatic treatment
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam
Unsuitable Media: Avoid high volume water jet; risk of spreading
Special Hazards: Will produce toxic fumes (carbon monoxide, carbon dioxide) when burned
Protective Equipment: Firefighters wear self-contained breathing apparatus, full protective gear
Firefighting Instructions: Move containers away from fire, cool exposed containers with water, avoid inhalation of combustion products
Personal Protection: Wear chemical-resistant gloves, protective goggles, suitable respiratory protection, and protective clothing
Environmental Precautions: Keep out of waterways, soil, and drains; alert local authorities to large spills
Spill Cleanup Methods: Stop leak if safe to do so. Collect spill with shovel or absorbents (vermiculite, dry sand), place in suitable container for disposal. Clean area with water and detergent, ventilate area.
Precautions for Safe Handling of Cleanup: Avoid dust formation, prevent wind dispersal, decontaminate equipment
Handling: Use only with adequate ventilation. Avoid dust generation. Prevent skin and eye contact. Do not eat, drink, or smoke while handling. After handling, wash thoroughly.
Storage Conditions: Store in cool, dry, well-ventilated area away from incompatible materials like strong oxidizers or acids. Keep container tightly closed when not in use. Protect from light and moisture.
Incompatibilities: Do not store with oxidizing agents or acids. Avoid proximity to ignition sources.
Special Storage Requirements: Use corrosion-resistant containers; ensure secondary containment for large volumes.
Occupational Exposure Limits: ACGIH TLV: 2 mg/m³ (inhalable fraction, 8-hour TWA)
Engineering Controls: Use local exhaust ventilation or process enclosure to minimize airborne dust, maintain eye-wash stations and safety showers in work area
Personal Protection: Wear chemical-resistant gloves (nitrile or PVC), splash goggles, laboratory coat or protective garment. Use approved respiratory protection for dusty conditions.
Hygiene Measures: Wash hands/face before breaks and after work, avoid inhaling dust, remove contaminated clothing immediately and wash before reuse
Appearance: White or pale yellow crystalline powder
Odor: Faint aromatic or phenolic odor
Odor Threshold: Not determined
pH: Not applicable (insoluble in water)
Melting Point: 69–71°C (156–160°F)
Boiling Point: 265°C (509°F) at 101.3kPa
Flash Point: 127°C (open cup)
Evaporation Rate: Not applicable
Flammability: Combustible dust
Explosive Limits: Not available
Vapor Pressure: 5.3 x 10⁻⁴ Pa at 25°C
Vapor Density: Not available
Relative Density: 1.048 at 20°C
Solubility: Poorly soluble in water (6 mg/L), soluble in ethanol, acetone, oils
Partition Coefficient (log Kow): 5.1
Autoignition Temperature: 490°C
Decomposition Temperature: Not determined
Viscosity: Not applicable
Chemical Stability: Stable at recommended storage and handling temperatures
Possibility of Hazardous Reactions: No dangerous reactions known under normal use
Conditions to Avoid: Exposure to heat, open flames, or strong oxidizing agents
Incompatible Materials: Strong acids, oxidizers, peroxides
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, irritating organic vapors if involved in fire
Acute Toxicity: Oral LD₅₀ (rat): 890–1970 mg/kg, signs of toxicity primarily manifest at high doses
Skin Corrosion/Irritation: Mild irritant (rabbit studies)
Eye Damage/Irritation: Mild, reversible irritation (rabbit studies)
Respiratory Sensitization: No data indicating sensitization
Skin Sensitization: Not classified as a skin sensitizer
Germ Cell Mutagenicity: Results of mutagenicity studies generally negative
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, ACGIH, or OSHA
Reproductive Toxicity: No clear evidence for reproductive or developmental toxicity under typical occupational exposures
Specific Target Organ Toxicity (Single/Repeated Exposure): Not classified, though repeated large oral doses in lab animals caused liver effects
Aspiration Hazard: Not an aspiration hazard under normal use
Acute Aquatic Toxicity: Very toxic to aquatic organisms (Fish LC₅₀ 0.5–4.6 mg/L)
Chronic Aquatic Toxicity: Expected to have long lasting effects in aquatic environment
Bioaccumulation Potential: High, log Kow = 5.1
Mobility in Soil: Low, binds strongly to soil particles
Degradability: Slowly biodegradable in the environment, persistent in water or sediment
Other Adverse Effects: No data on effects on ozone layer, but known toxicity to aquatic invertebrates and algae at low concentrations
Waste Disposal Methods: Handle in accordance with local regulations, send to licensed waste disposal contractor. Incineration preferred for large volumes. Do not discharge to natural waters or sewage systems.
Container Disposal: Empty containers should be triple rinsed, punctured, and disposed of at authorized facilities. Avoid atmospheric release of dust during disposal.
Precautions for Disposal: Avoid contamination of soil, waterways, drains; observe all national and local regulations regarding disposal of hazardous waste
Additional Considerations: For spill residues or triple-rinsed containers, follow all safety protocols in waste handling
UN Number: Not regulated as a hazardous material for transport under most major regulations (ADR, IATA, IMDG)
Proper Shipping Name: Butylated Hydroxytoluene
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Environmental Hazards: Environmentally hazardous substance, protect from spills during transport
Transport Precautions: Secure containers, avoid excessive heat, prevent rough handling; notify carrier of potential environmental hazard
Global Inventory Status: Listed or compliant with chemical inventories in United States (TSCA), Canada (DSL), EU (EINECS), Australia (AICS), Japan (ENCS), Korea (KECI), China (IECSC)
U.S. Regulations: OSHA: Not regulated as hazardous, SARA 313: Not subject to reporting, CERCLA: Not assigned a reportable quantity
EU Regulations: REACH registered, classified as hazardous for the environment; complies with EU food regulatory tolerances as antioxidant additive (E321)
Other Labels: In food applications, subject to maximum permitted levels set by regulatory authorities
Workplace Labeling: GHS compliant, includes pictograms for health and environment
Additional Notes: Check all local, state, and national regulations for specific registration, use, and labeling requirements for occupational, food, or specialty applications
