Product Name: P-Tolylsulfonic Acid
Synonyms: p-Toluenesulfonic acid, 4-Methylbenzenesulfonic acid
Chemical Formula: C7H8O3S
CAS Number: 104-15-4
Intended Use: Laboratory reagent, industrial catalyst, organic synthesis
Manufacturer Details: Supplier or manufacturer contact, emergency telephone, address provided on original container label
Email for Support: Reach out on work days via official distributor or manufacturer's website
Classification: Skin corrosion, category 1C; Eye damage, category 1; Acute toxicity (oral), category 5
Hazard Statements: Causes severe skin burns and eye damage; May irritate mucosal membranes if inhaled, especially to sensitive individuals
Precautionary Statements: Do not breathe dust or vapors, wash any exposed skin quickly after handling, wear protective gloves and eye protection
Signal Word: Danger
Pictograms: Corrosive symbol, exclamation mark
Other Hazards: May react violently on contact with bases, oxidizers, or strong reducing agents
Chemical Name: P-Tolylsulfonic Acid
Synonyms: p-Toluenesulfonic acid
CAS Number: 104-15-4
Concentration: Typically 98–100% in industrial settings
Impurities: Trace inorganic salts, less than 1% by weight
Mixture Note: Sold in solid, crystalline, or partially hydrated states, rarely mixed with other chemicals
Skin Contact: Rinse affected area under running water for at least 15 minutes, remove contaminated clothing, seek immediate medical attention
Eye Contact: Flush eyes with plenty of water for at least 15 minutes, keep eyelids open, seek immediate eye specialist advice
Inhalation: Move victim to fresh air, provide artificial respiration only if breathing has stopped, get medical help immediately
Ingestion: Do not induce vomiting, rinse mouth with water, never give anything by mouth if unconscious, seek medical attention
Immediate Care: Consult physician for all routes of significant exposure, monitor breathing and heart function
Suitable Extinguishing Media: Use dry chemical powder, carbon dioxide, or alcohol-resistant foam
Unsuitable Extinguishing Media: Avoid water jets that may spread chemical
Hazardous Combustion Products: Sulfur oxides, toluene, carbon oxides released during combustion
Protective Equipment for Firefighters: Self-contained breathing apparatus, protective suit to prevent skin contact with acidic fumes
Fire Fighting Instructions: Approach fire from upwind direction, use caution against corrosive vapors, cool surrounding containers
Explosion Hazards: No significant explosive properties in standard storage settings but violent reaction possible with strong bases
Personal Precautions: Wear acid-resistant gloves, eye and face protection, avoid breathing dust, evacuate non-essential personnel
Environmental Precautions: Prevent leakage to sewage, groundwater or public waters, notify authorities if large volume is released
Method for Cleaning Up: Carefully scoop, avoid dust generation, neutralize residue with sodium bicarbonate or lime, place in secure container
Ventilation: Use local exhaust or open windows to disperse vapors
Disposal of Cleanup Materials: Handle contaminated items as hazardous waste, place in labeled, sealed containers for disposal
Safe Handling Advice: Use chemical fume hood, wear acid-resistant gear, don’t eat, drink or smoke in work area, avoid spills
Storage Conditions: Store in tightly closed containers, in cool, well-ventilated, dry area, segregate from bases, oxidizers, or water sources
Container Materials: Use glass or acid-resistant plastic only, don’t store in ordinary steel or aluminum
Storage Temperature: Maintain ambient or below 30°C, avoid freeze–thaw cycles that cause crystallization or container damage
Bulk Storage: Inspect containers regularly for leaks or corrosion
Exposure Limits: No specific OSHA or ACGIH threshold, minimize workplace dust as general guideline
Engineering Controls: Local exhaust ventilation, safety shower and eyewash stations in same room
Respiratory Protection: Use approved respirator for concentrated exposure
Skin Protection: Chemical-resistant gloves (nitrile, neoprene), long-sleeved clothing, lab coat
Eye Protection: Chemical splash goggles, face shield for quantities over 50 grams
Workplace Monitoring: Regular air quality checks, especially if handled in bulk or in poorly ventilated rooms
Appearance: White to light pink crystalline powder, sometimes slightly moist
Odor: Faint aromatic odor, not pungent
Melting Point: 103–107°C
Boiling Point: Decomposes above 100°C
Solubility: Readily dissolves in water, ethanol, methanol
pH (1% solution): Strongly acidic, below 1
Vapor Pressure: Low at room temperature
Density: 1.24 g/cm3
Flash Point: Not flammable but decomposes when heated to give toxic fumes
Chemical Stability: Stable under standard storage, but moisture uptake increases corrosivity
Incompatible Materials: Strong bases, strong oxidizers, most metals
Hazardous Decomposition Products: Sulfur dioxide, toluene, carbon monoxide
Polymerization: Not prone to hazardous polymerization
Reactivity: Highly corrosive, vigorous reaction with alkali hydroxides or amines
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Effects: Burns to skin and eyes, respiratory tract irritation, inflammation in severe exposures
Chronic Effects: Skin sensitization, slow healing of burns, repeated exposure increases corrosion risk
LD50 (oral, rat): 2480 mg/kg
Acute Inhalation: No data for vapors, dust may cause coughing and throat discomfort
Carcinogenicity: Not known to cause cancer
Other Health Effects: Prolonged exposure increases risk of dermatitis or mucosal injury
Aquatic Toxicity: Harmful to aquatic organisms at high concentrations due to low pH
Persistence and Degradability: Organic component degrades slowly in water, acid persists and disperses
Bioaccumulation Potential: Not expected to build up in living organisms due to rapid ionization in water
Soil Mobility: Moderately mobile, soil acidification possible if spill not contained
Other Adverse Effects: Water contamination alters local pH, disrupts natural biological activity
Waste Treatment Methods: Neutralize with sodium carbonate/lime, dilute residue may enter permitted chemical drains after pH adjustment
Disposal of Containers: Empty containers may retain product residue, triple rinse then dispose as hazardous waste in accordance with local regulations
Regulatory Disposal Information: Local, regional, and national regulations often treat as corrosive waste, follow guidance to the letter
Recycling: Not suitable, product and packaging best destroyed through authorized chemical waste service
UN Number: 2585
UN Proper Shipping Name: p-Toluenesulfonic Acid
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: III
Labeling: Corrosive label required on exterior of all packages
Special Precautions: Transport in closed, secure packaging; avoid vibration or impact; keep upright at all times
Emergency Procedures: Spill kit and acid neutralizer included for large shipments
GHS Classification: Included as corrosive and hazardous under international chemical safety laws
Inventory Listings: Listed on TSCA (US), EINECS (EU), DSL (Canada), other major international chemical inventories
SARA Title III: Not subject to reporting under Sections 302, 304 or 313
REACH Status: Registered under REACH Regulation, subject to use restrictions in the EU
Workplace Safety: OSHA, NIOSH and local authority limits enforced as suitable
Labeling Requirements: Manufacturer safety labeling, hazard pictograms, risk and safety statements required
