Product Name: Sodium Dodecylbenzenesulfonate
Chemical Formula: C18H29NaO3S
CAS Number: 25155-30-0
Synonyms: Linear Alkylbenzene Sulfonate Sodium Salt, LAS Na
Relevant Identified Uses: Surfactant in detergents, cleaning agent, emulsifier, dispersing agent
Manufacturer/Supplier: Major chemical manufacturers and distributors worldwide handle this product
Emergency Phone Number: Local poison control center, or company emergency line, often included on packaging or shipping documents
Classification: Eye irritation (Category 2A), Skin irritation (Category 2), Acute aquatic toxicity (Category 2)
GHS Label Elements: Exclamation Mark pictogram for skin and eye irritation; environmental hazard pictogram
Signal Word: Warning
Hazard Statements: Causes skin irritation, causes serious eye irritation, toxic to aquatic life
Precautionary Statements: Wash hands thoroughly after handling, avoid release to environment, wear protective gloves, use eye protection
Chemical Identity: Sodium Dodecylbenzenesulfonate
Concentration Range: 80-100% for industrial-grade material
Impurities: Trace amounts of related sulfonates, water (<2%), unreacted linear alkylbenzenes (<1%)
Inhalation: Move the person to fresh air, keep at rest in a position that allows comfortable breathing.
Skin Contact: Remove contaminated clothing immediately, rinse skin with plenty of water for a minimum of 15 minutes.
Eye Contact: Flush immediately with gentle stream of water for at least 15 minutes, lifting upper and lower eyelids. Seek medical attention if irritation persists.
Ingestion: Rinse mouth with water, do not induce vomiting. Give plenty of water to drink. Obtain medical attention if symptoms develop.
Most Important Symptoms: Redness, burning, and irritation of affected areas; possible tissue damage with prolonged contact
Advice to Physician: Treat symptomatically based on local irritation
Suitable Extinguishing Media: Foam, dry chemical, CO2, or water spray for surrounding fire; product itself may not be highly flammable
Unsuitable Extinguishing Media: Do not use a water jet directly onto burning product, as it may cause the material to spread
Special Hazards: Thermal decomposition may release toxic vapors such as sulfur oxides, carbon monoxide, and carbon dioxide
Protective Equipment for Firefighters: Full protective gear and self-contained breathing apparatus
Hazardous Combustion Products: Irritating fumes, oxides of sulfur and carbon
Additional Advice: Contain run-off water to prevent environmental contamination
Personal Precautions: Ventilate area, wear suitable personal protective equipment (gloves, goggles, chemical-resistant apron)
Environmental Precautions: Prevent product entry into surface water, drains, or soil to avoid contamination
Clean-up Methods: For small spills, absorb with inert material such as sand or vermiculite and collect into suitable containers for disposal. For large spills, dike area and pump material to containers, then clean remaining residue with detergent solution and water
Disposal of Cleanup Materials: Dispose of according to local, state, and federal regulations
Additional Considerations: Notify authorities if significant spills enter waterways or public sewers
Handling: Avoid breathing dust or mists, avoid skin and eye contact, wash thoroughly after use, keep containers tightly closed
Storage: Store in a cool, dry, well-ventilated area away from incompatible materials like strong oxidizers and acids
Incompatible Materials: Strong acids (can cause release of sulfur dioxide), strong oxidizing agents
Suitable Container Materials: High-density polyethylene, stainless steel, glass, or lined drums
Other Advice: Keep container upright, protect from moisture, separate from food and animal feeds
Occupational Exposure Limits: No established exposure limits by OSHA, ACGIH, or NIOSH for this compound; minimize workplace exposure as a prudent practice
Engineering Controls: Use local exhaust ventilation to minimize airborne concentration
Personal Protection: Wear chemical-resistant gloves, safety goggles, protective clothing, use dust mask or respirator in dusty environments
Hygiene Measures: Do not eat, drink, or smoke when handling; wash hands thoroughly before meals or breaks
Environmental Controls: Use process enclosures and local exhaust systems to prevent environmental release
Appearance: White to off-white powder or granules; sometimes sold as a viscous liquid in solution
Odor: Mild, detergent-like
pH: Typically 7 - 9 (1% aqueous solution)
Solubility: Easily dissolves in water
Melting Point: Approximately 200°C (decomposes)
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: Not flammable under normal conditions
Bulk Density: 0.3 – 0.4 g/cm³
Vapor Pressure: Negligible
Partition Coefficient (n-octanol/water): Log Kow ≈ 1.96
Decomposition Temperature: Begins to break down above 200°C
Viscosity: Not relevant for powder; solutions may be moderately viscous
Explosive Properties: Not known to be explosive
Oxidizing Properties: Not classified as oxidizer
Chemical Stability: Stable under ordinary storage and handling conditions
Conditions to Avoid: Moisture exposure, strong heat, contact with acids
Incompatible Materials: Acids (may release toxic gases), strong oxidizers
Hazardous Decomposition Products: Sulfur oxides, carbon monoxide, carbon dioxide
Polymerization: Not known to undergo hazardous polymerization
Acute Toxicity: Oral LD50 (rat): 438 mg/kg (may vary by purity and formulation)
Skin Contact: Causes irritation, redness, and possible dermatitis on prolonged or repeated contact
Eye Contact: Causes severe irritation, risk of serious eye damage
Inhalation: Dust or mist may irritate respiratory tract
Ingestion: Gastrointestinal irritation, nausea, vomiting, diarrhea
Chronic Effects: No evidence of carcinogenicity in animal studies; prolonged or repeated exposure may lead to skin defatting and eczema
Sensitization: Not classified as a skin sensitizer
Mutagenicity/Teratogenicity: Available studies report low concern for mutagenic or reproductive toxicity
Ecotoxicity: Highly toxic to aquatic organisms; fish LC50 (96h): 1-10 mg/L (species-dependent); can cause long-term damage in water environments
Persistence and Degradability: Readily biodegradable (over 80% in 28 days under aerobic conditions)
Bioaccumulative Potential: Low based on log Kow and biodegradability
Mobility in Soil: Highly soluble, can migrate in soil and water
Other Adverse Effects: Product may foam in water, causing mechanical damage to aquatic organisms and impacting oxygen transfer
Waste Treatment Methods: Avoid release to environment. Incinerate under controlled conditions or dispose of in chemical landfill following local, regional, or national regulations
Container Disposal: Rinse containers thoroughly, then recycle or dispose of as hazardous waste
Disposal Restrictions: Do not discharge into drains, watercourses, or soil
Other Advice: Consult licensed waste disposal company for safe destruction
UN Number: 2586 (if applicable as per concentration and country regulation)
Proper Shipping Name: Alkylbenzenesulfonic acids, sodium salts
Transport Hazard Class: 8 (corrosive, for concentrated solutions); not regulated in solid low-concentration forms
Packing Group: III
Marine Pollutant: Yes (product harmful to aquatic life)
Special Precautions: Avoid transport with food and animal feed; secure packaging to prevent leaks
OSHA Status: Not listed as a hazardous substance under OSHA Hazard Communication Standard, but workplace controls apply
TSCA Inventory: Listed
EU Classification (CLP): Eye irritation category 2, aquatic acute category 2
REACH Registration: Registered since 2010
WHMIS (Canada): Classified as a workplace hazardous material
SARA Title III: Not a listed extremely hazardous substance; subject to reporting requirements as hazardous chemical
Other International Regulations: Complies with major chemical safety regulations globally; subject to environmental discharge restrictions
