Product Name: 2,4-Di-Tert-Butylphenol
Chemical Formula: C14H22O
Synonyms: 2,4-Bis(1,1-dimethylethyl)phenol
CAS Number: 96-76-4
Recommended Use: Antioxidant in plastics, fuel additives, polymer stabilizer
Manufacturer: Details provided on packaging or company SDS
Contact Information: Emergency contact numbers and address of supplier on label
Emergency Overview: Colorless to pale yellow crystalline solid, mild aromatic odor
Classification (GHS): Acute Toxicity – Oral (Category 4), Skin Irritation (Category 2), Eye Irritation (Category 2A), Acute Aquatic Toxicity (Category 1)
Signal Word: Warning
Hazard Statements: Harmful if swallowed; Causes skin and eye irritation; Toxic to aquatic life with long lasting effects
Pictograms: Exclamation Mark, Dead Fish/Tree
Potential Health Effects: Skin contact may produce redness and discomfort; Inhalation can irritate respiratory tract; Ingestion causes gastrointestinal symptoms
Routes of Exposure: Contact, inhalation, ingestion
Chemical Name: 2,4-Di-Tert-Butylphenol
CAS Number: 96-76-4
Concentration: >98% pure
Impurities and Stabilizing Additives: Minor residual solvents may be present depending on the production process
Mixture: Not a mixture; single chemical substance
Inhalation: Move person to fresh air, seek medical attention if symptoms persist or develop, keep at rest
Skin Contact: Remove contaminated clothing immediately, wash skin thoroughly with soap and water for at least 15 minutes, seek medical attention for irritation or allergic reaction
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing, seek medical advice
Ingestion: Rinse mouth, do not induce vomiting, seek urgent medical attention, monitor for abdominal pain, nausea, or vomiting
Most Important Symptoms: Irritation, redness, allergic reactions, possible delayed onset symptoms
Notes to Physician: Treat symptomatically, monitor for respiratory distress or sensitization
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: High-pressure water jets may scatter material
Specific Hazards: May emit toxic fumes of carbon oxides under fire conditions, combustible solid
Protective Equipment for Firefighters: Full protective clothing, self-contained breathing apparatus, use water spray to cool containers
Special Procedures: Isolate hazard area, remove containers from fire if safe, avoid run-off to waterways
Personal Precautions: Evacuate area, ventilate, avoid inhalation and direct contact with skin and eyes, use appropriate personal protective equipment
Environmental Precautions: Prevent release to drains, sewers, and natural waterways, notify environmental authorities if larger spill occurs
Methods for Clean Up: Wear gloves and eye protection, absorb with inert material (sand, earth), scoop into labeled waste container for disposal, wash spill area with water and detergent, ventilate thoroughly
Decontamination: Ensure all contaminated surfaces are properly rinsed and dried before reuse
Handling: Work in well-ventilated area, avoid breathing dust or fumes, avoid contact with eyes, skin, and clothing, use recommended personal protective equipment (PPE), avoid generating dust, wash hands after handling, maintain good industrial hygiene
Storage: Store in tightly closed original container, in a cool, dry, well-ventilated area, away from sources of ignition and incompatible materials (oxidizers, acids), keep container upright and clearly labeled, segregate from food and feedstuffs
Incompatible Conditions: High heat, open flames, strong oxidizing agents, strong acids and bases
Control Parameters: No specific permissible exposure limit (PEL) or threshold limit value (TLV) established; use standard industrial hygiene practices
Engineering Controls: Use local exhaust ventilation or general room ventilation to minimize dust and vapor exposure; use enclosed processes where possible
Personal Protective Equipment: Wear chemical-resistant gloves, safety goggles or face shield, protective clothing (long sleeves, lab coat); use respirator (NIOSH-approved) if ventilation insufficient or in dusty environment
Hygiene Measures: Do not eat, drink, or smoke in areas where chemical is handled; wash thoroughly after handling; wash contaminated clothing before reuse
Environmental Exposure Controls: Implement measures to prevent workplace and environmental exposure; use secondary containment for large quantities
Appearance: White to off-white crystalline powder or granules
Odor: Mild, phenolic, aromatic
Melting Point: 53–56°C (127–133°F)
Boiling Point: 275°C (527°F) at 760 mmHg
Solubility: Low solubility in water; soluble in organic solvents like ethanol, benzene, ether
Vapor Pressure: 0.0024 mmHg at 25°C
Density: 0.9–1.0 g/cm³
pH: Not applicable (solid, weakly acidic solution possible)
Flashpoint: 127°C (261°F)
Partition Coefficient (Log Kow): 5.12
Auto-Ignition Temperature: 400°C (752°F)
Chemical Stability: Stable under normal temperatures and pressures
Reactivity: May react with strong oxidizing agents
Hazardous Reactions: May produce irritant and toxic fumes under fire conditions
Conditions to Avoid: Heat, open flames, sparks, and incompatible substances
Incompatible Materials: Strong oxidizers, acids, bases
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, phenolic compounds that may be toxic
Acute Toxicity: Oral LD50 (rat): 1630 mg/kg; Dermal: Not fully studied; Inhalation: Data not sufficient for precise category
Skin Corrosion/Irritation: Causes moderate irritation in contact
Serious Eye Damage/Irritation: Causes eye irritation in laboratory tests
Respiratory or Skin Sensitization: Not proven to sensitize, but repeated exposure may increase risk
Germ Cell Mutagenicity: No data available
Carcinogenicity: No data indicating classification as a carcinogen
Reproductive Toxicity: Not classified, insufficient evidence
STOT – Single Exposure: May cause temporary respiratory irritation
STOT – Repeated Exposure: Not classified
Aspiration Hazard: Not classified
Toxicity: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment (EC50 for algae/bacteria: < 1 mg/L)
Persistence and Degradability: Not readily biodegradable, may persist in soil and water, slow degradation rate
Bioaccumulative Potential: High (Log Kow 5.12 indicates PBT concerns in aquatic settings)
Mobility in Soil: Low water solubility and high soil partitioning suggest strong adsorption to sediment and soil particles
Other Adverse Effects: Can bioaccumulate in fish and wildlife, risk of secondary poisoning
Precautions: Use measures to prevent spillages and minimize environmental impact during handling and disposal
Disposal Methods: Collect and dispose of waste material at authorized facility in accordance with local, regional, and national regulations
Packaging Disposal: Triple rinse and render packaging unusable before disposal, recycle or incinerate where permitted
Considerations: Do not discharge into drains, watercourses, or landfill; restrict access to waste containers
Regulatory Compliance: Follow hazardous waste rules, obtain proper waste manifest and disposal certification as required
UN Number: 3077
Proper Shipping Name: Environmentally Hazardous Substance, Solid, N.O.S. (2,4-Di-Tert-Butylphenol)
Transport Hazard Class: 9 (Miscellaneous Dangerous Substances)
Packing Group: III
Marine Pollutant: Yes
Special Precautions: Keep away from food and feedstuffs, shield against physical damage, follow local transport requirements, label as marine pollutant when shipping internationally
Transport in Bulk: Refer to IMO/IMDG code and ADR accord regulations
TSCA Status: Listed on United States TSCA Inventory
EINECS Number: 202-525-2 (European Union)
REACH Registration: Registration required for quantities over one metric ton/year in the EU
Canada (DSL/NDSL): Listed/verified
Labeling Requirements (GHS/OSHA): Hazard pictograms, signal words, and hazard statements required on shipping container and workplace labels
Other Regulations: Subject to national occupational health standards for hazardous chemicals, local spill reporting, and environmental protection laws
Worker Protection: Safety training, hazard communication programs, and regular workplace monitoring required where substance is produced or used
