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Material Safety Data Sheet: Alkyl, Aryl or Toluenesulfonic Acid Containing Free Sulfuric Acid

Identification

Product Name: Alkyl/Aryl/Toluenesulfonic Acid (with Free Sulfuric Acid)
Chemical Family: Sulfonic Acid Compound
Synonyms: p-Toluenesulfonic Acid Mixtures, Dodecylbenzenesulfonic Acid Blend
Manufacturer: Refer to supplier's identification on product packaging
Recommended Use: Surfactant precursor, catalyst, cleaning agent
Emergency Contact: Access to local poison control center and emergency response services

Hazard Identification

Classification: Corrosive to metals, Skin corrosion, Serious eye damage
Signal Word: Danger
Hazard Statements: Causes severe skin burns, eye damage, may corrode metal surfaces, releases toxic and irritating fumes on contact with water or heat
Precautionary Statements: Wear resistant gloves, goggles, protective clothing; avoid inhaling mist or vapors; keep away from incompatable substances; use in well-ventilated area
Pictograms: Corrosion, Exclamation Mark
Acute Effects: Burning sensation, coughing, possible respiratory distress

Composition / Information on Ingredients

Main Ingredient: Alkyl/Aryl/Toluenesulfonic Acid
Chemical Identifier: CAS registry numbers specific to mixture; typically includes 98%+ sulfonic acid, remainder as sulfuric acid
Impurities: Free sulfuric acid ranging from 1% to 15% depending on sample
Other Constituents: Water (<3%), trace organic materials

First Aid Measures

Inhalation: Move to fresh air, monitor for signs of lung irritation, seek medical care if breathing difficulty develops
Eye Contact: Flush gently with water for at least 15 minutes, call physician immediately
Skin Contact: Remove contaminated clothing, wash with copious water and mild soap, monitor for burns
Ingestion: Rinse mouth, do not induce vomiting, seek emergency medical help fast
Other Comments: Personnel must avoid unprotected contact while providing assistance

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray (flood method), dry chemical, carbon dioxide
Unsuitable Media: Avoid straight water jets as splatter or chemical spread could result
Specific Hazards: Emission of toxic fumes including sulfur oxides, potential release of corrosive aerosols
Protective Gear for Firefighters: Full chemical protective suit, self-contained breathing apparatus
Special Procedures: Cool exposed containers with water mist, control runoff, isolate affected area

Accidental Release Measures

Personal Protection: Wear chemical splash suit, gloves, goggles, appropriate respiratory protection
Environmental Precautions: Prevent entry to sewers, surface or ground water
Containment: Neutralize with sodium carbonate or lime; carefully dike and absorb with sand or inert material
Cleanup: Shovel residue into corrosion-resistant containers; dispose according to local regulations; ventilate spill area
Decontamination: Wash down with plenty of water, neutralize acids on surfaces if possible

Handling and Storage

Handling Precautions: Keep containers tightly sealed, avoid splashes and vapor formation, always use chemical-rated gloves and eyewear
Hygiene Advice: Do not eat, drink, smoke while handling; wash hands and face thoroughly after use
Storage Requirements: Store in acid-resistant containers, separate from alkalies and oxidizers, away from heat and water sources
Temperature Controls: Store at cool room temperature (15-25°C), maintain low humidity
Incompatible Materials: Avoid storing near bases, organic materials, strong oxidizing agents or reducing agents

Exposure Controls and Personal Protection

Control Parameters: Established occupational limits for sulfuric acid vapor (OSHA PEL: 1 mg/m³)
Engineering Controls: Use fume hoods, local exhaust, general ventilation
Personal Protective Equipment: Nitrile or neoprene gloves, chemical splash goggles, long-sleeved acid resistant clothing
Respiratory Protection: Use approved respirators if airborne limits reached
Other Recommendations: Emergency eyewash stations, safety showers easily within reach

Physical and Chemical Properties

Appearance: Colorless to light brown liquid or crystalline solid depending on purity
Odor: Sharp, biting, sometimes phenolic
pH: Less than 1 for concentrated solutions
Melting Point: 36-40°C (Toluenesulfonic), liquid at room temperature for other blends
Boiling Point: Decomposes before boiling over 100°C
Solubility: Soluble in water with rapid heat evolution
Density: 1.2-1.5 g/cm³
Vapor Pressure: Low at room temperature; may increase with heat
Flash Point: Not applicable (non-flammable)

Stability and Reactivity

Chemical Stability: Stable under recommended conditions; decomposes in alkaline environment or on heating
Possible Reactions: vigorous reactions with bases, strong oxidizers, some metals
Hazardous Decomposition: Produces toxic sulfur oxides, heat, fumes, may corrode container
Polymerization: Does not polymerize
Conditions to Avoid: High temperature, humidity, incompatible substances listed above

Toxicological Information

Routes of Entry: Inhalation, ingestion, skin and eye contact
Acute Health Effects: Severe burns, ulcers, acute respiratory distress, ocular injury
Chronic Exposure: Skin dermatitis, delayed eye damage, dental erosion from repeated exposure, increased risk of respiratory illness with inhalation
Carcinogenicity: Strong inorganic acid mist containing sulfuric acid classified as carcinogenic to humans (IARC Group 1)
Other Data: No reproductive toxicity reported in controlled studies; rapid medical care reduces risk of lasting injury

Ecological Information

Aquatic Toxicity: Highly toxic to aquatic life by rapid pH drop and sulfur oxides formation
Persistence/Degradation: Sulfonic acid groups degrade under environmental conditions but acidification persists
Environmental Mobility: Water soluble, migrates easily in aquatic systems, contaminates soil if not neutralized
Bioaccumulation: Low bioaccumulation potential; ecosystem impact through pH change
Other Hazards: Neutralizing spills before environmental release minimizes long-term ecosystem effects

Disposal Considerations

Method: Neutralize under controlled conditions before disposal
Contaminated Packaging: Triple rinse and segregate for hazardous waste pickup
Relevant Regulations: Disposal should comply with local, regional, and national hazardous waste statutes
Reuse/Recycling: Do not attempt without professional support and approved facilities
Special Instructions: Never dispose down drains or into the environment; label containers clearly

Transport Information

UN Number: 2586 (Sulfonic acids, liquid, with not more than 5% free sulfuric acid)
Shipping Name: Alkyl/Aryl/Toluenesulfonic Acid Solution
Hazard Class: 8 (Corrosive Materials)
Packing Group: II or III (depends on concentration)
Labeling: Corrosive (Black/White, symbol: test tube & hand)
Special Transport Guidance: Separate from foodstuffs, use acid-resistant containers, keep upright, document route and destination

Regulatory Information

Global Inventories: Registered under TSCA (USA), REACH (EU), DSL/NDSL (Canada) as appropriate to region
Hazard Listings: Reportable under CERCLA, SARA Title III (Section 313) when sulfuric acid is present
Workplace Regulation: Must display warning signage per OSHA, maintain SDS on premises; training required for users
Consumer Restrictions: Not for household or retail use without professional supervision
Other Legal Notes: Subject to strict storage and transport controls, routine safety audits required