Material Safety Data Sheet for P-Tert-Butylphenol (PTBP)

1. Identification

Product Name: p-tert-Butylphenol
Chemical Formula: C10H14O
CAS Number: 98-54-4
Synonyms: PTBP, 4-tert-Butylphenol, Tert-Butyl-p-hydroxybenzene
Recommended Use: Chemical intermediate, resin manufacturing, epoxy curing agent, plastic additive.
Supplier Details: Manufacturer’s address and contact number, emergency phone numbers, and responsible department for safety information.

2. Hazard Identification

Classification: Skin corrosion/irritation (Category 2), Serious eye damage/eye irritation (Category 2A), Specific target organ toxicity – single exposure, Acute aquatic toxicity (Category 2).
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation. Harmful if inhaled. May cause respiratory irritation. Toxic to aquatic life.
Pictograms: Exclamation mark, Environment
Precautionary Statements: Avoid breathing vapors. Wash hands after handling. Use only outdoors or in a well-ventilated area. Wear protective gloves and eye protection. Collect spillage.

3. Composition / Information on Ingredients

Chemical Name: p-tert-Butylphenol
Common Name: PTBP
Concentration: 99% or above
CAS Number: 98-54-4
Impurities: May contain trace amounts of mixed cresols, other tert-butylphenol isomers below 1%

4. First Aid Measures

Inhalation: Remove person to fresh air. Seek medical attention if symptoms persist, such as coughing or dizziness.
Skin Contact: Wash immediately with soap and plenty of water. Remove contaminated clothing. Get medical help for continued irritation.
Eye Contact: Rinse thoroughly with plenty of water for at least 15 minutes, holding eyelids apart. Remove contact lenses, if present and easy to do. Consult a physician.
Ingestion: Rinse mouth. Do not induce vomiting. Get medical attention if feeling unwell or abundantly exposed.
Most Important Symptoms: Redness, pain, tearing, irritation of respiratory tract, possible headache or dizziness.

5. Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray.
Hazards During Fire-Fighting: Combustion may produce carbon monoxide, carbon dioxide, irritating fumes.
Protective Equipment: Wear self-contained breathing apparatus and full protective clothing.
Special Information: Use water spray to cool containers. Avoid inhalation of smoke or fumes. Prevent runoff from firefighting from entering drains or waterways.

6. Accidental Release Measures

Personal Protective Equipment: Wear safety goggles, gloves, and protective clothing. Use respiratory protection for dust or vapors.
Spill Response: Ventilate area. Prevent dust or vapor formation. Collect spill mechanically or with absorbent material such as sand or vermiculite. Avoid release to sewers or environment.
Environmental Precautions: Keep out of water sources, drains, and soil. Notify authorities if large amounts escape.
Clean-Up Methods: Sweep up solid material, place in a closed container for disposal. Wash area with soap and water.

7. Handling and Storage

Handling: Avoid contact with eyes, skin, and clothing. Prevent inhalation of vapors or dusts. Use only with adequate ventilation. Ground/bond container and receiving equipment. Do not eat, drink, or smoke during use.
Storage: Store in original tightly closed container, in a cool, dry, well-ventilated location, away from direct sunlight. Separate from incompatible substances including acids, oxidizers, strong bases. Keep away from food, beverages, and feed.
Container Information: Store in corrosion-resistant containers.

8. Exposure Controls and Personal Protection

Exposure Limits: No established OSHA PEL or ACGIH TLV. Keep airborne concentrations as low as possible.
Engineering Controls: Use local exhaust ventilation or other engineering controls to keep exposure limits below recommended values. Provide eyewash stations and safety showers.
Personal Protection: Wear chemical splash goggles, nitrile gloves, protective clothing. Use NIOSH-approved respirators for dust/vapor. Wash hands after handling.
Hygiene Measures: Avoid eating, drinking, and smoking in work area. Wash hands thoroughly after handling.

9. Physical and Chemical Properties

Appearance: White to pale yellow crystalline solid
Odor: Phenolic, slightly sweet
Melting Point: 98-103 °C (208-217 °F)
Boiling Point: 238 °C (460 °F)
Flash Point: 113 °C (235 °F, closed cup)
Water Solubility: Slightly soluble, approximately 0.4 g/L at 25°C
Vapor Pressure: 0.01 mm Hg at 25°C
Density: 0.91 g/cm³ at 25°C
pH: Not applicable (applies to aqueous solutions)
Partition Coefficient (log Kow): 3.32
Auto-Ignition Temperature: 535 °C (995 °F)
Evaporation Rate: Negligible

10. Stability and Reactivity

Chemical Stability: Stable under normal storage and handling conditions.
Incompatible Materials: Strong oxidizers, strong bases, strong acids.
Hazardous Decomposition Products: Emits toxic fumes under fire conditions, including phenolic fumes, carbon monoxide, and carbon dioxide.
Hazardous Polymerization: Will not occur.
Conditions to Avoid: High temperature, open flame, exposure to incompatibilities.

11. Toxicological Information

Acute Toxicity: Oral LD50 (rat): 2550 mg/kg. Dermal LD50 (rabbit): 2288 mg/kg. Inhalation LC50 (rat): Data not available.
Skin Irritation: Causes irritation, redness, and swelling on contact.
Eye Irritation: Provokes severe irritation, possible corneal injury.
Chronic Effects: Repeated exposure may cause dermatitis. May cause allergic skin reactions in susceptible individuals.
Sensitization: May sensitize skin.
Other Risks: Not classified as carcinogenic, mutagenic, or toxic for reproduction under GHS.

12. Ecological Information

Aquatic Toxicity: Toxic to aquatic life; LC50 (fish, 96h): 4.8 mg/l (Oryzias latipes). EC50 (Daphnia, 48h): 2.6 mg/l.
Persistence and Degradability: Not readily biodegradable; moderately persistent.
Bioaccumulation Potential: Moderate potential for bioaccumulation due to log Kow.
Mobility in Soil: Low mobility, binds to soil.
Other Adverse Effects: Large spills may be hazardous to surface or groundwater quality.

13. Disposal Considerations

Disposal Methods: Dispose as hazardous waste by incineration or landfilling in accordance with local, regional, national, and international regulations.
Contaminated Packaging: Empty containers should be rinsed, then disposed of or recycled according to local guidelines.
Special Precautions: Do not allow product or contaminated water from cleaning equipment to enter drains, surface water, or groundwater.

14. Transport Information

UN Number: 3077
Shipping Name: Environmentally Hazardous Substance, Solid, N.O.S. (contains p-tert-Butylphenol)
Transport Hazard Class: 9 (Miscellaneous dangerous substances and articles)
Packing Group: III
Marine Pollutant: Yes
DOT (US): Regulated, check for specific exceptions or quantity limits.
IATA: May require special labeling and handling for air transport.

15. Regulatory Information

TSCA Status: Listed.
SARA Title III (Sections 311/312): Acute health hazard, environmental hazard.
DSL/NDSL (Canada): Listed.
REACH (Europe): Registered substance.
Chemical Inventories: Listed in Australian AICS, Japan ENCS, Korea KECI, China IECSC, Philippines PICCS.
Label Elements: GHS compliant, including hazard pictograms, signal words, and statements.
Restrictions: Some uses may be restricted under national or regional regulations.