Product Name: Phenol-4-Sulfonic Acid
Synonyms: p-Hydroxybenzenesulfonic acid
Chemical Formula: C6H6O4S
CAS Number: 98-67-9
Recommended Use: Laboratory reagent, chemical synthesis, dye intermediates
Manufacturer/Supplier: Refer to label or purchase details
Emergency Phone: Refer to label or local poison control center
Classification: Corrosive to metals, causes severe skin burns and eye damage, harmful if swallowed
Signal Word: Danger
Hazard Statements: Causes severe burns on contact with skin or eyes, can damage respiratory tract through inhalation, may provoke allergic response and acute toxicity through ingestion
Pictogram: Corrosion, Exclamation Mark
Precautionary Statements: Wear suitable protective clothing, avoid inhalation, prevent contact with eyes, do not handle without adequate training
Routes of Exposure: Skin contact, eye contact, inhalation, ingestion
Chemical Name: Phenol-4-Sulfonic Acid
Content: >98% by weight
Impurities: May contain trace amount of water or inorganic salts depending on grade
Molecular Weight: 174.18 g/mol
Other Identifiers: EINECS 202-684-8
Inhalation: Remove affected individual to fresh air, keep at rest, provide medical attention if symptoms persist
Skin Contact: Remove contaminated clothing, flush skin with running water for at least 15 minutes; seek prompt medical attention if irritation, burns, or pain develop
Eye Contact: Rinse cautiously with water for 15-20 minutes, hold eyelids apart, seek immediate ophthalmological advice
Ingestion: Rinse mouth, do not induce vomiting, call a poison center or physician, give water to dilute if conscious
Specific Treatment: Emergency wash stations, symptomatic treatment as needed, seek immediate medical attention for all exposures
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or foam
Hazardous Combustion Products: Sulfur oxides, carbon oxides, possibly toxic phenol vapors
Special Protective Equipment: Wear self-contained breathing apparatus and full chemical protective gear
Unusual Fire Hazards: Vapors may be irritating, decomposition in heat may produce hazardous gases
Advice for Firefighters: Approach from upwind, keep out unnecessary personnel and avoid direct contact with spilled or leaking product
Personal Precautions: Evacuate area, use adequate ventilation, personal protection with chemical-resistant clothing and gloves
Spill Response: Contain spill, absorb with earth or suitable inert material, place in suitable closed containers for disposal
Environmental Precautions: Prevent entry into drains, sewers, surface and ground waters, notify authorities in case of environmental contamination
Cleaning Methods: Neutralize with lime or sodium carbonate carefully, remove all residues with water and test area for contamination before reoccupation
Handling: Use only with adequate ventilation, avoid contact with skin, eyes, and clothing, do not inhale dust or fumes, only handle in designated areas with spill control procedures in place
Storage: Store in tightly sealed containers in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizers, segregate acids from alkalis, keep away from heat and direct sunlight
Incompatible Materials: Metals, strong bases, oxidizing agents
Special Instructions: Maintain adequate secondary containment and appropriate signage
Engineering Controls: Local exhaust required, chemical fume hood preferred, spill containment systems
Personal Protection: Chemical splash goggles, face shield, resistant gloves (nitrile or butyl rubber), protective clothing (lab apron or full suit), appropriate NIOSH-approved respirator for dust or vapor exposure
Exposure Limits: No established OSHA or ACGIH exposure limits, minimize exposure to as low as reasonably practicable
Hygiene Measures: Wash hands thoroughly after handling, remove contaminated clothing and wash before reuse, do not eat, drink, or smoke in the work area
Appearance: White to off-white crystalline solid
Odor: Faint, phenol-like
Boiling Point: Decomposes before boiling
Melting Point: Approx. 111-115 °C (232-239 °F)
Solubility: Very soluble in water, soluble in alcohol, limited solubility in nonpolar solvents
pH: 0.5 – 2 (10g/L solution in water)
Vapor Pressure: Negligible at room temperature
Density: 1.67 g/cm³
Flash Point: Not flammable
Partition Coefficient (log Kow): Not available
Auto-Ignition Temperature: Not self-igniting
Chemical Stability: Stable under recommended storage conditions
Hazardous Decomposition Products: Sulfur oxides, carbon oxides, phenol
Reactivity: Reacts with metals forming hydrogen gas, reacts exothermically with strong bases and oxidizing agents
Hazardous Polymerization: Does not occur
Conditions to Avoid: Heating above melting point, excessive moisture, contact with reactive materials
Acute Toxicity: Toxic if swallowed, inhaled, or in contact with skin; oral LD50 (rat): 400 mg/kg
Chronic Effects: Prolonged or repeated exposure may cause skin irritation, eye damage, respiratory issues, possibly sensitization
Symptoms of Overexposure: Burns, pain, redness, possible systemic effects such as headache, nausea, respiratory distress
Carcinogenicity: No data indicating carcinogenic effect in humans
Mutagenicity/Reproductive Toxicity: Not classified, insufficient data
Aquatic Toxicity: Harmful to aquatic organisms, possible long-term adverse effects in the aquatic environment
Bioaccumulation Potential: Not expected to bioaccumulate based on low octanol-water partition coefficient
Mobility in Soil: High water solubility promotes mobility in soil, risk of leaching into groundwater
Degradability: Expected to undergo slow chemical or biological degradation
Other Adverse Effects: Spills may lead to pH shift in water bodies, ecological monitoring is advisable near sites of disposal
Disposal Methods: Dispose of in an approved chemical waste facility, follow all local, state, national regulations, do not allow discharge to environment
Contaminated Packaging: Rinse containers thoroughly before disposal, offer for recycling or disposal in accordance with local regulations
Additional Recommendations: Physically or chemically neutralize before disposal, ensure all residues meet regulatory requirements before discharge or landfill
UN Number: UN2585
UN Proper Shipping Name: Phenolsulfonic Acid, solid
Transport Hazard Class: 8 (Corrosive Substances)
Packing Group: II
Marine Pollutant: Consult shipping manifest; not designated under IMDG
Special Precautions: Secure packaging, mark consignments clearly, provide appropriate placards
Transport Labels: Corrosive label required
Regulatory Reference: Comply with ADR/RID, IMDG, IATA transport codes
TSCA: Listed on the US Toxic Substances Control Act inventory
REACH: Registered as a substance under EU REACH regulations
SARA Title III (Sections 302/313): Not listed as extremely hazardous, subject to reporting under certain environmental conditions
OSHA: Handle as a hazardous chemical under OSHA Hazard Communication Standard
WHMIS Classification: D1B (Toxic Material), E (Corrosive Material)
California Proposition 65: Not listed
Other Country-Specific Regulations: Refer to updated local and national chemical safety guidelines before use or disposal
