Material Safety Data Sheet – Linear Alkyl Benzene Sulfonic Acid

Identification

Product Name: Linear Alkyl Benzene Sulfonic Acid
Chemical Formula: C18H30SO3
Synonyms: LABSA, Alkylbenzenesulfonic acid
Recommended Use: Industrial cleaning agents, surfactant formulation, detergent manufacturing
Supplier Details: Manufacturer and distributor contact information including address, emergency phone number, and email for technical queries
Emergency Telephone: 24-hour emergency hotline for chemical incidents
CAS Number: 27176-87-0

Hazard Identification

Classification: Corrosive to skin and eyes, hazardous to aquatic environments
GHS Label: Corrosive pictogram, exclamation mark, environment
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage, harmful if inhaled, toxic to aquatic life with long-lasting effects
Precautionary Statements: Avoid release to environment, wear protective gloves, eye protection, and protective clothing, wash skin thoroughly after handling, do not breathe mist or vapor

Composition / Information on Ingredients

Chemical Name: Linear Alkyl Benzene Sulfonic Acid
Concentration: Typically 96% - 98% active acid
Impurities: Sulfuric acid (less than 2%), water (1% - 3%)
Other Components: Trace organics - linear alkyl benzene, sodium salts

First Aid Measures

Eye Contact: Immediately flush eyes with running water for at least 15 minutes, lifting eyelids, remove contact lenses if present, seek medical attention right away
Skin Contact: Rinse exposed area with water, remove contaminated clothing, continue rinsing for at least 15 minutes, seek medical advice
Inhalation: Move person to fresh air, provide oxygen if breathing is difficult, call a physician immediately
Ingestion: Do not induce vomiting, rinse mouth with water, never give anything by mouth to an unconscious person, seek immediate medical assistance

Fire-Fighting Measures

Suitable Extinguishing Media: Use foam, dry chemical, or carbon dioxide on small fires, avoid using water jets
Hazardous Combustion Products: Emits toxic fumes of SOx gases and carbon oxides under fire conditions
Firefighting Instructions: Wear full protective clothing and self-contained breathing apparatus, use water spray to keep containers cool, contain runoff to prevent entry into drains or waterways, evacuate area if necessary

Accidental Release Measures

Personal Precautions: Use personal protective equipment, ventilate area, avoid breathing vapors
Environmental Precautions: Prevent spills from reaching drains, surface water, and soil
Containment and Clean Up: Absorb with inert material like sand or earth, collect for disposal in a labeled container, clean spill area thoroughly with water, neutralize small spills with sodium carbonate or lime, dispose in accordance with local, state, and federal regulations

Handling and Storage

Safe Handling: Use in well-ventilated areas, avoid contact with skin, eyes, and clothing, do not inhale vapors or mists, never add water directly to acid
Safe Storage: Store in a tightly closed container made of compatible material, keep in a dry, cool, well-ventilated area away from incompatible substances like bases, oxidizing agents, and water, segregate from food and drink, secure against unauthorized access, inspect container regularly for leaks or damage

Exposure Controls and Personal Protection

Exposure Limits: Occupational exposure limits not established, minimize exposure by engineering controls
Engineering Controls: Use local exhaust ventilation to keep airborne levels below recommended standards
Personal Protective Equipment: Chemical impervious gloves, splash-proof goggles, face shield, protective apron, long-sleeve clothing, respiratory protection if exposure limits are exceeded or if ventilation is inadequate
Hygiene Measures: Wash hands, face, and exposed skin after handling, do not eat, drink, or smoke during use, remove and wash contaminated clothing

Physical and Chemical Properties

Appearance: Brownish viscous liquid
Odor: Pungent, characteristic aromatic odor
pH: Less than 2 (strongly acidic)
Melting Point: Not applicable (liquid at room temperature)
Boiling Point: Decomposes before boiling
Solubility: Soluble in water forming acidic, foaming solution
Density: 1.05 – 1.10 g/cm³ at 20°C
Vapor Pressure: Low at ambient conditions
Flash Point: Greater than 100°C
Viscosity: High
Partition Coefficient (n-octanol/water): Not determined

Stability and Reactivity

Chemical Stability: Stable under normal conditions
Conditions to Avoid: Moisture, high temperatures, incompatible materials
Incompatible Materials: Strong bases, oxidizing agents, water, reactive metals like zinc or aluminum
Hazardous Decomposition Products: Sulfur oxides, toxic gases
Reactivity: Reacts vigorously with bases and water, can corrode most metals producing hydrogen gas

Toxicological Information

Acute Toxicity: Corrosive to eyes, skin, and mucous membranes, ingestion causes severe burns of mouth, throat, and stomach
Chronic Toxicity: Prolonged or repeated exposure may cause dermatitis or respiratory irritation
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Symptoms: Severe pain, redness, blistering, impaired vision for eyes, ulceration upon ingestion
Sensitization: No known reports of sensitization
Carcinogenicity: No evidence of carcinogenicity from long-term studies
Mutagenicity: No mutagenic effects observed in standard tests

Ecological Information

Aquatic Toxicity: Highly toxic to aquatic life, rapid foaming and oxygen depletion risks in waterways
Persistence and Degradability: Readily biodegradable under aerobic conditions, but persistent enough to impact aquatic environments
Bioaccumulative Potential: Low – does not significantly accumulate in aquatic organisms
Mobility in Soil: Mobile in water, can contaminate groundwater
Other Environmental Hazards: Harmful to fish and other organisms even at low concentrations, prevents oxygen transfer at water’s surface during spills

Disposal Considerations

Waste Treatment Methods: Neutralize with lime or soda ash before disposal, treat as hazardous waste if not neutralized
Disposal Recommendation: Incinerate in accordance with approved waste disposal protocols, follow local, regional, and national regulations
Container Disposal: Triple rinse with water, puncture and send to an approved waste management facility, do not reuse containers for other chemicals
Environmental Release: Avoid uncontrolled discharge into drains, soil, or surface waters

Transport Information

UN Number: 2586
Proper Shipping Name: Alkylsulphonic acids, liquid
Class/Division: 8 (Corrosive substances)
Packing Group: III
Labels Required: Corrosive symbol
Transport Hazard Class: Regulated for transport by DOT, ADR, IMDG, and IATA
Special Precautions: Secure containers, protect from physical damage, transport in upright position, follow emergency procedures

Regulatory Information

OSHA: Hazardous under OSHA Hazard Communication Standard
TSCA Inventory: Listed
SARA Title III: Subject to reporting under SARA 311/312 (acute health hazard)
California Proposition 65: Not listed as a known carcinogen or reproductive toxin
Other Regulations: Compliant with REACH, subject to classification under CLP (EU), ensure compliance with local and national environmental, health, and safety regulations
Labelling: Clear hazard communication, training for handlers and emergency response teams required, comply with packaging and labeling requirements for corrosives