Product Name: 2-Tert-Butyl-P-Cresol
Synonyms: 4-Methyl-2-(1,1-dimethylethyl)phenol, 2-(1,1-dimethylethyl)-p-cresol
Recommended Use: Antioxidant in plastics, rubbers, and food packaging
CAS Number: 88-18-6
Manufacturer: Listed on supplier label
Emergency Contact: Refer to local or company-specific emergency phone number
UN Number: See Transport Information
REACH Registration Number: If applicable, available upon request
GHS Classification: Skin irritation (Category 2), Eye irritation (Category 2A), Hazardous to aquatic life (Category 2)
Signal Word: Warning
Hazard Statements: Causes skin irritation, causes serious eye irritation, toxic to aquatic life with long lasting effects
Precautionary Statements: Avoid contact with skin and eyes, avoid release into environment, wear protective gloves and eye protection
Pictograms: Exclamation mark, Environment
Most Important Hazards: Direct contact can irritate or damage skin and eyes, dust or vapors may irritate respiratory tract, environmental risk for aquatic toxicity
Chemical Identity: 2-Tert-Butyl-P-Cresol
Concentration: ≥99% pure
Impurities: Typical process impurities <1% by weight, specify if above threshold for hazard
Molecular Formula: C11H16O
Molecular Weight: 164.25 g/mol
Structure: Alkylated phenol, contains methyl and tert-butyl groups
Inhalation: Remove victim to fresh air away from exposure, seek medical attention if symptoms persist
Skin Contact: Wash affected area with soap and plenty of water, remove contaminated clothing, get medical help if irritation continues
Eye Contact: Rinse eyes cautiously with water for at least 15 minutes, remove contact lenses if present and possible, seek immediate medical attention
Ingestion: Rinse mouth thoroughly, do not induce vomiting unless directed by medical personnel, get medical assistance right away
Indications for Immediate Medical Attention: Persistent irritation, difficulty breathing, severe symptoms on ingestion or inhalation
Suitable Extinguishing Media: Dry chemical, CO2, or alcohol-resistant foam
Unsuitable Extinguishing Media: Direct water jets may spread burning material
Special Hazards: May emit toxic fumes such as carbon oxides under fire conditions
Protective Equipment: Full firefighting protective gear, self-contained breathing apparatus
Advice for Firefighters: Evacuate area, approach fire with wind at your back, contain contaminated firefighting water
Personal Precautions: Avoid breathing dust, wear gloves, goggles and mask; prevent skin and eye contact
Environmental Precautions: Prevent entry into drains, runoff into waterways, or soil; notify authorities for large spills
Containment: Collect spillage with inert absorbent material like sand or earth; avoid raising dust
Cleanup Procedures: Shovel into secure containers for disposal, ventilate area, wash spill site after material pickup
Emergency Procedures: Evacuate unnecessary personnel, secure the area, wear recommended personal protective equipment
Handling: Handle in well-ventilated places; avoid creating dust and contact with skin, eyes, or clothing; do not smoke or drink
Technical Measures: Use only in closed systems or areas with exhaust ventilation, ground/bond container and receiving equipment
Storage Conditions: Store in tightly closed containers in a cool, dry, well-ventilated area, away from extreme heat or ignition sources
Specific Storage Requirements: Keep away from strong oxidizers, acids, and foodstuffs
Packaging Materials: Use corrosion-resistant, chemically compatible packaging
Occupational Exposure Limits: Threshold limits not established by OSHA or ACGIH; follow local guidelines or workplace assessment
Engineering Controls: Use fume hoods, local exhaust ventilation, eye washes and showers near work area
Personal Protective Equipment: Nitrile or neoprene gloves, chemical safety goggles or face shield, protective clothing, respirator for dusty/fume conditions (e.g., NIOSH-approved respirator)
Safe Work Practices: Wash hands and face after handling, no eating or smoking in the work area, change contaminated clothing
Appearance: White to pale yellow crystalline solid
Odor: Phenolic, weak aromatic
Odor Threshold: Not determined (based on available data)
pH: Not applicable (insoluble in water)
Melting Point: 36–44°C (97–111°F)
Boiling Point: 264°C (507°F)
Flash Point: 116°C (241°F) (closed cup)
Evaporation Rate: Not available
Flammability: May form combustible dust concentrations; combustible solid
Vapor Pressure: Very low at room temperature
Density: 1.045 g/cm³ at 20°C
Solubility: Low solubility in water, soluble in ethanol, benzene, and organic solvents
Partition Coefficient (log Kow): 4.5 (estimated)
Viscosity: Not applicable for solids
Decomposition Temperature: >260°C
Auto-ignition Temperature: Not established
Chemical Stability: Stable under normal storage and handling conditions
Reactivity: Reacts with strong oxidizing agents; can potentially react with acids
Hazardous Reactions: Avoid contact with strong oxidants (e.g., peroxides, permanganates) to prevent violent reactions
Conditions to Avoid: Direct sunlight, elevated temperatures, humidity, open flames
Decomposition Products: Releases toxic fumes of carbon oxides if heated or burned
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity: Oral LD50 (rat): ~5000 mg/kg; inhalation and dermal toxicity data limited, not acutely toxic by standard exposure routes
Irritation/Corrosivity: Skin and eye irritant; dust or concentrated solutions may cause significant irritation
Chronic Effects: Prolonged exposure can aggravate skin conditions, potential to cause dermatitis
Mutagenicity/Carcinogenicity: Not classified as mutagenic or carcinogenic based on available evidence
Reproductive Toxicity: Not identified as toxic to reproduction
Symptoms of Exposure: Redness, itching, burning sensation in skin or eyes, coughing, sore throat if inhaled
Aquatic Toxicity: Harmful to aquatic life (LC50/EC50 for fish and daphnia in range of 1–10 mg/L)
Persistence and Degradability: Moderately persistent, not readily biodegradable
Bioaccumulation Potential: May bioaccumulate in aquatic organisms (log Kow >4)
Soil Mobility: Low mobility, binds to sediments
Other Adverse Effects: Avoid release to environment, no evidence of significant ozone depletion or global warming potential
Waste Management: Treat as hazardous waste; consult local, regional, and national regulations
Methods of Disposal: Dispose of product by incineration in a licensed facility or in compliance with applicable environmental regulations
Packaging Disposal: Triple rinse containers before disposal, puncture and dispose of safely; do not reuse empty containers
Precautions: Avoid discharge into drains, surface waters, and soils
Regulatory Compliance: Classification for disposal based on hazardous chemical regulations in your jurisdiction
UN Number: UN3077 (Environmentally hazardous substance, solid, n.o.s., if applicable)
Proper Shipping Name: Environmentally Hazardous Substance, Solid, N.O.S. (contains 2-Tert-Butyl-P-Cresol)
Transport Hazard Class: 9 (Miscellaneous dangerous substances)
Packing Group: III
Marine Pollutant: Yes
Special Precautions: Avoid accidental release, secure packaging to prevent movement
Labeling Requirements: Compliant with GHS, EU CLP, OSHA Hazard Communication Standard
TSCA Status: Listed on the Toxic Substances Control Act Inventory
REACH: Registrant and compliance as per EU Regulation
Right-to-Know Laws: Listed on state and country chemical inventories (consult local lists for details)
Other Regulatory Points: Subject to workplace exposure, environmental, and transportation regulations; safety training, workplace controls, and documentation required for industrial use
