Material Safety Data Sheet (MSDS) - Phenolsulfonic Acid

1. Identification

Product Name: Phenolsulfonic Acid Synonyms: Benzenesulfonic acid, Hydroxybenzenesulfonic acid, Sulfophenol Recommended Uses: Intermediate for dyes, resins, pharmaceuticals Supplier: [Insert contact information] Emergency Contact: [Insert 24-hour phone number] CAS Number: 98-67-9

2. Hazard Identification

Classification: Corrosive to skin and eyes, causes severe burns, harmful if inhaled Label Elements: Corrosive pictogram, exclamation mark Signal Word: Danger Hazard Statements: Causes severe skin burns and eye damage, may cause respiratory irritation Precautionary Statements: Wear protective gloves and eye protection, avoid breathing fumes, wash hands thoroughly after handling Health Effects: Burning, pain, redness, blisters, possible permanent damage to eyes or respiratory system

3. Composition / Information on Ingredients

Chemical Identity: Phenolsulfonic Acid CAS Number: 98-67-9 Concentration: 98-100% Impurities: Minimal, may contain traces of phenol or sulfuric acid Molecular Formula: C6H6O4S Molecular Weight: 174.18 g/mol

4. First Aid Measures

Inhalation: Move to fresh air, seek medical advice, monitor for respiratory distress Skin Contact: Remove contaminated clothing, rinse skin with copious water for at least 15 minutes, seek medical attention Eye Contact: Rinse cautiously with water for several minutes, lift eyelids, remove contact lenses, get immediate medical help Ingestion: Rinse mouth, do not induce vomiting, get medical assistance quickly Advice for Physicians: Symptomatic treatment, consider effects of burns and respiratory irritation

5. Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry chemical foam, carbon dioxide Unsuitable Media: Straight streams of water may spread acid Special Hazards: Fumes of sulfur oxides and phenol upon combustion, risk of violent reaction with water Protective Equipment: Firefighters must wear self-contained breathing apparatus and full protective clothing Further Information: Contain runoff water, cool surrounding containers

6. Accidental Release Measures

Personal Precautions: Evacuate area, ventilate space, avoid breathing vapours, wear chemical protective suit Environmental Precautions: Prevent run-off into sewers, drains, or waterways Methods for Clean Up: Neutralize with sodium bicarbonate or lime, absorb with inert material, collect in approved container for proper disposal Decontamination: Wash spill area with plenty of water after cleanup Reference to Other Sections: Consult handling, disposal, and fire-fighting sections

7. Handling and Storage

Handling: Use only in a well-ventilated area, never add water directly, avoid contact with eyes and skin, don’t breathe vapours Hygiene: Wash hands after handling, remove contaminated clothing before eating or drinking Storage: Keep container tightly closed in a cool, dry, ventilated place, protect from moisture, store in corrosion-resistant containers Incompatibilities: Strong bases, oxidizing agents, metals Packaging: Use chemically resistant packing with proper labeling

8. Exposure Controls and Personal Protection

Exposure Limits: No established occupational exposure limits, minimize exposure as much as possible Engineering Controls: Local exhaust ventilation, closed process systems Personal Protective Equipment: Protective gloves (rubber, neoprene), chemical goggles or face shield, lab coat, acid-resistant apron, respiratory protection in high vapour concentration Environmental Controls: Use closed systems, prevent release into environment Other Precautions: Eye-wash stations and safety showers in work area

9. Physical and Chemical Properties

Appearance: Colorless to pale-yellow viscous liquid, sometimes crystalline solid Odour: Characteristic, sharp, phenolic pH: Extremely acidic Melting Point: 42°C Boiling Point: 210°C at 760 mm Hg Solubility: Highly soluble in water, produces heat on mixing Vapour Pressure: Low at ambient conditions Density: 1.33 g/cm³ Viscosity: High Flash Point: Non-flammable Explosive Properties: None known Other Data: Hygroscopic, absorbs moisture from air

10. Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions Hazardous Reactions: Reacts violently with strong bases, oxidizers, water Conditions to Avoid: Excess heat, open flame, incompatible materials Materials to Avoid: Metals, organic materials, strong alkalis, oxidizing agents Hazardous Decomposition Products: Sulfur oxides, phenol vapours Polymerization: Will not occur

11. Toxicological Information

Routes of Exposure: Inhalation, skin, eye, ingestion Acute Toxicity: Rapidly damaging to skin, eyes, and mucous membranes, toxic by ingestion and inhalation Chronic Effects: Prolonged or repeated contact causes dermatitis, possible organ damage with chronic exposure Sensitization: Not reported Carcinogenicity: Not listed as known carcinogen (IARC, OSHA, NTP) Mutagenicity: No reliable data Reproductive Toxicity: No conclusive studies Symptoms: Severe pain, redness, swelling, burns, respiratory distress, abdominal pain

12. Ecological Information

Ecotoxicity: Harmful to aquatic life, particularly in concentrated form Persistence and Degradability: Readily biodegradable, but acidifies water and disrupts biological activity Bioaccumulative Potential: Low potential Mobility in Soil: Mobile in water, percolates through soils rapidly Other Adverse Effects: Acidifies soil and water, impairs plant health Actions to Prevent Harm: Prevent entry into watercourses and soil

13. Disposal Considerations

Waste Disposal Methods: Dispose as hazardous waste through licensed waste contractor, neutralize acid before disposal if permitted Contaminated Packaging: Dispose of like product residue, do not reuse containers Recommendations: Do not dispose into drains or environment Regulatory Considerations: Comply with regional, national, and local regulations Special Precautions: Label and secure containers properly

14. Transport Information

UN Number: 2585 UN Proper Shipping Name: Phenolsulfonic acid Transport Hazard Class: 8 (Corrosive substances) Packing Group: II Marine Pollutant: Not classified Special Precautions: Protect from heat, keep sealed, label corrosive Transport Labels: Corrosive Emergency Procedures: Refer to emergency response guidebook number for corrosives

15. Regulatory Information

OSHA: Subject to general workplace safety provisions for corrosive chemicals TSCA: Listed SARA: SARA 302/304/313 not listed as a reportable substance REACH: Registered WHMIS (Canada): Class E (Corrosive Material) Other Labeling Requirements: Hazard pictograms, signal words, H statements under GHS Restrictions: Use according to all federal, state, local laws Right to Know: Meets state requirements for hazardous disclosure