Product Name: Sodium Dodecylbenzene Sulfonate (LAS)
Common Synonyms: Linear Alkylbenzene Sulfonate, Sodium Alkylbenzenesulfonate
Chemical Formula: C18H29NaO3S
CAS Number: 25155-30-0
Intended Uses: Cleaning agents, detergents, and industrial formulations
Manufacturing Contact: Customer safety office, with phone number and emergency contact
Recommended Use Restrictions: Not for pharmaceutical or food-processing applications
Supplier Address: Listed, with 24-hour emergency service contact
GHS Classification: Eye Irritation (Category 2A), Skin Irritation (Category 2), Acute Toxicity (Category 4, Oral)
Signal Word: Warning
Hazard Statements: Causes skin irritation, serious eye irritation, and may be harmful if swallowed
Precautionary Statements: Wear eye protection, gloves, and avoid breathing dust or mist. Pictograms: Exclamation mark
Emergency Overview: Solid white or off-white powder, mild soapy odor, dust presents inhalation risk, contact irritates eyes and skin
Routes of Exposure: Inhalation, dermal, ingestion; eyes get watery, red, or burned with direct contact
Potential Health Effects: Throat irritation, coughing, abdominal pain, skin redness, swelling, or blisters
Chemical Name: Sodium Dodecylbenzene Sulfonate
Concentration: 95-98% active
Impurities: Unreacted linear alkylbenzene, isomers, inorganic salts at less than 3%
Other Components: Residual water less than 2%, trace sodium sulfate, sodium chloride
CAS Numbers of Minor Components: Sodium sulfate 7757-82-6, sodium chloride 7647-14-5
Molecular Weight: Approximately 348.48 g/mol
Inhalation: Move affected person to fresh air, loosen tight clothing, monitor for difficulty breathing
Skin Contact: Rinse under running water for at least 15-20 minutes, remove contaminated clothing, seek medical advice if irritation continues
Eye Contact: Flush with plenty of water for at least 15 minutes, occasionally lifting eyelids; immediate attention for continued pain
Ingestion: Do not induce vomiting, rinse mouth with water, never give fluids to an unconscious person, seek advice from poison control
Important Symptoms: Sore throat, nausea, stomach upset, eye watering, redness or burning on skin
Notes for Physician: Symptomatic treatment, monitor for delayed effects, provide supportive care
Suitable Extinguishing Media: Use water spray, dry chemical powder, foam, or carbon dioxide
Specific Hazards: Thermal decomposition releases toxic gases, including sulfur oxides, carbon monoxide, and benzene derivatives
Protective Equipment: Firefighters need self-contained breathing apparatus and protective clothing
Special Procedures: Move containers away from immediate hazards, cool with water spray, ventilate area after fire
Fire/Explosion Risk: Product itself non-flammable; dust can form explosive mixtures in air under certain conditions
Personal Precautions: Wear nitrile gloves, safety goggles, dust mask or NIOSH-certified respirator, avoid skin and eye contact
Environmental Precautions: Prevent spillage from entering drains or surface water, protect soil from contamination
Methods for Clean-up: Sweep up spilt material without creating dust, shovel into suitable, labeled containers for disposal
Decontamination: Wash area with soap and water after bulk clean-up
Additional Actions: Notify local authorities in case of uncontrolled discharge into environment
Safe Handling: Keep containers tightly closed, use only in well-ventilated locations, prevent dust buildup, handle with suitable PPE
Hygiene Recommendations: Wash hands thoroughly after use, do not eat, drink, or smoke while handling
Conditions for Safe Storage: Store in cool, dry, well-ventilated area, away from heat or direct sunlight, segregate from oxidizing agents and acids
Packaging Materials: High-density polyethylene or steel drums, tightly sealed to keep moisture out
Storage Stability: Remains stable sealed at 15–25°C, out of reach from children and unauthorized personnel
Occupational Exposure Limits: No specific OSHA PEL or ACGIH TLV for sodium dodecylbenzene sulfonate; consider general particulate limits: 15 mg/m³ (total dust), 5 mg/m³ (respirable)
Engineering Controls: Local exhaust ventilation in dusty work areas, use enclosed transfer systems if possible
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), splash-proof goggles, long sleeve clothing, and, for high-dust tasks, approved particulate respirator
Environmental Controls: Contain runoff, filter air emissions where feasible, reduce open transfers and spills
Physical State: White to light yellowish powder or granule
Odor: Mild, soapy aroma
pH (1% Solution): 7–8.5
Melting Point: Not applicable (decomposes before melting)
Boiling Point: Not available (solid under standard pressure)
Solubility: Highly soluble in water; forms clear to cloudy solution
Vapor Pressure: Negligible
Density: 0.25–0.45 g/cm³ bulk density
Partition Coefficient (n-octanol/water): Log Kow = 1.96 (estimated)
Decomposition Temperature: Above 200°C
Flammability: Not flammable as supplied; dust may ignite with strong ignition source
Stability: Stable under normal temperatures and pressures, light and moisture-sensitive
Incompatible Materials: Strong oxidizers (like peroxides), acids, strong bases, and strong reducing agents
Hazardous Decomposition Products: Sulfur oxides, benzene derivatives, small amounts of low molecular weight hydrocarbons under thermal decomposition
Polymerization: No hazardous polymerization anticipated
Reactive Conditions: Moist environments can cause slow hydrolysis, strong oxidizing agents could trigger spontaneous combustion
Acute Toxicity: Oral LD50 (rat) between 650–1300 mg/kg
Skin Corrosion/Irritation: Causes moderate irritation, redness, sometimes swelling with prolonged exposure
Serious Eye Damage/Irritation: Causes severe irritation, burning, pain, and risk of corneal damage
Respiratory or Skin Sensitization: No evidence of skin sensitization; dust may aggravate respiratory symptoms in sensitive individuals
Carcinogenicity: Ingredient not listed by IARC, NTP or OSHA as carcinogen
Mutagenicity or Reproductive Toxicity: Not known to be mutagenic or harmful to reproduction
Chronic Effects: Prolonged skin contact may cause dryness or cracking; repeated inhalation of dust may aggravate asthma or bronchitis
Ecotoxicity: Toxic to aquatic life, especially in concentrated form—LC50 (fish, 96h): about 1–5 mg/L; high doses threaten invertebrates
Persistence and Degradability: Readily biodegradable under aerobic conditions; slowly degrades anaerobically
Bioaccumulation: Very low; partition coefficient suggests low buildup in aquatic organisms
Mobility in Soil: Moderately mobile in moist soils; may migrate to groundwater if unchecked
Other Harmful Effects: In concentrated form, foam produced can suffocate aquatic organisms by reducing dissolved oxygen
Waste from Residues or Unused Product: Dispose in accordance with local, regional, and national regulations for hazardous chemical waste
Contaminated Packaging: Rinse containers, dispose as special waste or recycle if possible
Recommended Treatment: Treat as detergent waste; biological treatment most effective for dilute solutions
Restrictions: Do not allow concentrated product or wash water to enter sewers, natural water bodies, or soil
UN Number: Not classified as hazardous under international transport regulations
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Non-dangerous for conveyance
Packing Group: None assigned
Special Precautions for User: Secure packaging, avoid dust release, prevent contact with moisture during transport
Environmental Hazards: Not classified as a marine pollutant under IMDG
US Federal Regulations: Not listed under CERCLA, SARA Title III Section 313; subject to general workplace and environmental safety requirements
OSHA: Covered under Hazard Communication Standard as hazardous chemical
TSCA Inventory: Listed
Canada (WHMIS): Classified as D2B (toxic materials causing other effects)
EU Regulations: Meets requirements of Regulation (EC) 648/2004 on detergents
Other Controls: Comply with local, national, and international regulations for workplace chemical safety, environmental protection, and ingredient labeling
