Product Name: P-Phenylsulfonic Acid
Chemical Formula: C6H6O3S
Synonyms: Paraphenylsulfonic Acid, 4-Phenylsulfonic Acid
Uses: Chemical intermediate, dye manufacturing, research applications
Manufacturer/Supplier: List specific contact information per supplier
Emergency Contact Number: Typically: Chemtrec +1-800-424-9300; update with site-specific information
Recommended Restrictions: Laboratory, industrial, and not for food or drug use or for household applications
Classification: Acute toxicity (oral, dermal, inhalation), Skin corrosion/irritation, Serious eye damage/irritation
GHS Label Elements: Danger symbol, Corrosive pictogram
Hazard Statements: Causes severe burns to skin and eyes, Harmful if swallowed, inhaled, or upon contact
Precautionary Statements: Avoid breathing dust or fumes, Wear protective clothing and gloves, Wash hands thoroughly after handling, Respond to spills with proper safety gear
Potential Effects: Damage to mucous membranes, risk of lung injury from inhalation, dermatitis risk from skin exposure
Chemical Name: P-Phenylsulfonic Acid
Concentration: ≥98% in typical laboratory reagent-grade products
CAS Number: 98-11-3
Impurities: May contain trace organic acids, inorganic salts at <2%
Inhalation: Remove person to fresh air, keep at rest, seek medical attention if breathing becomes difficult
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, seek medical care for irritation, blistering, or burns
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes, lift eyelids, remove contacts, seek immediate medical assistance
Ingestion: Rinse mouth, do not induce vomiting, seek medical advice immediately
Additional Notes: Call poison center or physician, watch for symptoms of respiratory distress or delayed tissue damage
Flammability: Non-flammable solid under standard conditions
Suitable Extinguishing Media: Water mist, dry chemical, foam, carbon dioxide
Firefighting Procedures: Wear full protective gear with self-contained breathing apparatus; avoid inhaling toxic combustion products
Hazardous Combustion Products: Releases sulfur oxides, possible phenol/benzene fragments under intense heat
Special Hazards: Corrosive fume risk, containers exposed to heat may rupture
Personal Precautions: Evacuate unnecessary personnel, ventilate area, wear chemical-resistant gloves, goggles, protective suit
Environmental Precautions: Prevent spillage from entering soil, drains, or watercourses
Clean-Up Methods: Neutralize with sodium bicarbonate slurry, collect solid with inert absorbent, place in labeled containers
Decontamination: Wash area with water after solid material removal
Disposal: Dispose all contaminated materials following local regulations
Safe Handling: Only work with product in well-ventilated spaces or fume hoods, avoid contact with skin, eyes, clothing
Storage Conditions: Keep container tightly closed in a cool, dry, well-ventilated, and corrosive-resistant area
Incompatibles: Store far from oxidizers, bases, strong reducing agents, or moisture
Hygiene: Remove contaminated clothing right away, thoroughly wash after use
Occupational Limits: No ACGIH, NIOSH specific TLV/PEL for P-Phenylsulfonic Acid, control dust exposure as for other corrosive organosulfonics
Ventilation: Use only with suitable exhaust ventilation or within a chemical fume hood
Eye Protection: Chemical splash goggles plus face shield
Skin Protection: Butyl rubber or nitrile gloves, full lab coat, chemical-resistant apron
Respiratory Protection: If dust or fumes arise, wear NIOSH-approved full-face acid gas respirators
Other Protection: Eyewash stations and safety showers should always be available
Appearance: White to off-white crystalline powder or granules
Odor: Slightly pungent; characteristic sulfonic acid smell
Odor Threshold: Not established
pH (1% solution): Below 2
Melting Point: 120 - 130 °C
Boiling Point: Decomposes
Flash Point: Not available (not expected to be combustible)
Solubility: Miscible with water, reacts exothermically
Vapor Pressure: Negligible at room temperature
Density: 1.46 g/cm³ at 20 °C
Partition Coefficient (log Kow): Not established
Decomposition Temperature: Above 200 °C
Viscosity: Not applicable
Chemical Stability: Stable under normal handling and storage conditions away from moisture or heat
Reactivity: Reacts vigorously with bases, ammonia, oxidizing or reducing agents
Hazardous Reactions: May generate heat and corrosive gases mixing with base or water
Decomposition: May break down to sulfur oxides and phenols with heat
Polymerization: Not known to occur under normal conditions
Acute Toxicity: Oral LD50 (rat): Data ranges 500 – 2000 mg/kg
Corrosivity: Causes severe skin and eye damage; risk of serious burns
Irritation: Respiratory tract irritation possible even at low dust levels
Sensitization: Not reported in animal studies
Chronic Toxicity: Prolonged exposure can cause tissue damage
Carcinogenicity: No current evidence of carcinogenic potential for P-phenylsulfonic acid
Mutagenicity: Not reported
Reproductive Toxicity: No data available
Routes of Exposure: Inhalation, ingestion, dermal, ocular
Aquatic Toxicity: Data limited, expected to be toxic to aquatic organisms due to strong acidity
Persistence and Degradability: Undergoes abiotic and biodegradation, not persistent in water systems
Bioaccumulative Potential: Low, based on physical properties
Mobility in Soil: Dissolves and migrates quickly, risk for soil and groundwater contamination
Special Notes: pH changes in water may harm aquatic species, best practices include limiting runoff and keeping out of sewer
Methods of Disposal: Neutralize under controlled conditions with base, collect solid residue, dispose at hazardous waste facility
Container Disposal: Rinse thoroughly, triple rinse with water, plastic or glass preferred for containment
Precautions: Do not dump into natural waters, landfill or regular trash; follow local and federal rules for hazardous acids waste
Waste Codes: Assign per mixture and residue context, check with state or country hazardous material codes
UN Number: UN2585
Proper Shipping Name: Arylsulfonic Acid, solid
Hazard Class: 8 (Corrosive)
Packing Group: II
Label: Corrosive
Environmental Hazards: Strong acid, dangerous to aquatic environments
Transport Precautions: Store upright, segregate from alkalis, oxidizers, and food items, secure containers to prevent leaks or spills
Special Transport Notes: Comply with DOT, ADR, IMDG, IATA shipping rules for corrosive solids
TSCA (USA): Listed
REACH (EU): Pre-registered or registered for selected uses
OSHA: Regulated as corrosive chemical; safety training required
WHMIS (Canada): Classified as corrosive material
SARA Title III: Not specifically listed; all chemical inventories should be kept for reporting
California Prop 65: Not listed
Other Local Standards: Country-specific transport, occupational health, and disposal codes apply; consult regional authorities for latest requirements
