Product Name: Lignin Sulfonic Acid
Chemical Family: Sulfonated lignin polymers
Common Uses: Water-reducing agent, dispersant in concrete, additive in animal feed, leather tanning
CAS Number: 8061-51-6
Manufacturers: Global chemical supply companies and paper mill by-product distributors
Product Form: Liquid or powder
Synonyms: Lignosulfonic acid, sulfite lignin
Contact Details (Supplier): See packaging for up-to-date information
GHS Classification: Not classified as hazardous under GHS for typical industrial concentrations
Main Hazards: Mild irritant to skin and eyes; dust may cause respiratory discomfort; not acutely toxic at low exposure
Environmental Threats: Overuse or spills could result in aquatic over-enrichment, boosting biological oxygen demand
Signal Word: None required
Pictograms: Not typically required
Potential Health Effects: Irritation for sensitive individuals; very rare cases of allergy among plant workers
Precautionary Statements: Avoid inhaling dust; prevent contact with eyes; wash hands thoroughly after use
Chemical Identity: Lignin, sulfonated
Concentration: 90%+ (technical grade)
Impurities: Trace carbohydrates and salts, low sulfuric acid residues from production
Hazardous Additives: No specific hazardous additives typically found
Stabilizers/Preservatives: Not commonly used
Molecular Structure: Complex amorphous polymer, contains phenylpropanoid and sulfonic acid groups
Inhalation: Move to fresh air, stay calm; seek medical attention if wheezing or cough develops
Skin Contact: Wash thoroughly with soap and water, apply mild moisturizer if irritation appears
Eye Contact: Rinse eyes with clean running water for several minutes, do not rub
Ingestion: Rinse mouth with water; drink water if conscious; seek help if nausea or stomach upset persists
Advice for Doctors: Treat symptoms, no specific antidote; product is not considered highly toxic
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Media: None known for this material
Special Hazards: May produce irritating or pungent fumes (sulfur oxides, carbon oxides) during combustion
Protective Equipment: Firefighters should use self-contained breathing apparatus and chemical protective suit
Fire/Explosion Data: Dust may form explosive mixture with air under rare circumstances; keep dust accumulation in check
Personal Precautions: Avoid raising dust, ventilate affected area, wear gloves and goggles
Environmental Precautions: Contain run-off, keep product out of watercourses, avoid entry into drains
Cleanup Methods: Scoop up spilled material with non-sparking tools, collect in labeled containers; wash area with water
Disposal: Dispose of material according to local, national, and environmental guidelines; avoid direct discharge to streams
Handling: Prevent dust generation, wear protective equipment if exposure risk is possible; keep away from food and beverages
Hygiene Measures: Wash hands after handling, never smoke or eat in the work area
Storage: Store in a cool, dry, well-ventilated place; seal containers tightly after use;
Storage Incompatibilities: Strong oxidizers, alkaline chemicals; avoid mixing; keep away from moisture and heat
Recommended Containers: Plastic, lined metal barrels, original packaging with proper labeling
Special Instructions: Shelter from direct sunlight, label vessels with product name and hazards
Occupational Exposure Limits: No established OSHA, NIOSH, or ACGIH exposure limits for lignin sulfonic acid
Engineering Controls: Use local exhaust ventilation in dusty areas, install dust collection systems
Personal Protective Equipment: Gloves (nitrile or similar), splash goggles, coveralls in routine use
Respiratory Protection: Dust mask or particulate respirator where airborne concentration is high
General Recommendations: Wash hands before breaks, launder work clothing regularly, direct exposure should be minimized
Appearance: Light brown to dark brown powder or viscous liquid
Odor: Mild, woody
pH (5% solution): 2.3–3.5 (acidic)
Solubility in Water: Complete for typical commercial grades
Melting Point: Not applicable for polymeric nature
Boiling Point: >100°C (for solution)
Vapor Pressure: Negligible for solid
Bulk Density: 0.4–0.7 g/cm3 for powder
Viscosity: Varies according to product form
Ignition Temperature: >250°C
Flash Point: Not flammable under standard conditions
Explosive Properties: Dust may pose a risk in rare dense clouds
Chemical Stability: Stable under typical handling and storage conditions
Possible Decomposition Products: Sulfur oxides, carbon oxides, aromatic fumes on strong heating or burning
Conditions to Avoid: Moisture in storage, very high heat, strong oxidizing agents, strong alkalis
Incompatible Materials: Peroxides, permanganates, strong bases
Reactivity: Will not polymerize or degrade rapidly under normal circumstances; slow breakdown in environment
Acute Toxicity: LD50 (oral, rat): >5,000 mg/kg; low toxicity
Irritation: Mild, temporary irritation to eyes and skin, especially for sensitive individuals
Chronic Effects: Repeated, prolonged exposure could dry or crack skin; no data suggests carcinogenicity
Allergic Reactions: Extremely rare, suspected in plant workers with constant exposure
Inhalation: Can bring about coughing or discomfort in dusty conditions
Ingestion: May cause digestive upset if ingested in large quantity, not considered hazardous
Persistence/Degradability: Slowly biodegradable under aerobic conditions
Bioaccumulation: Very low potential
Mobility in Soil: Moves freely in water, binds to soil particles over time
Toxicity to Aquatic Life: Significant aquatic organism toxicity only at very high concentrations
Ecological Concerns: Excessive product spill may raise chemical oxygen demand in water, can result in short-term oxygen depletion for fish and other species
Product Disposal: Can be incinerated in accordance with local and national requirements; landfilling for solid waste where permitted
Container Disposal: Triple rinse, puncture, and recycle or send for disposal at approved waste facility
Waste Codes: Depends on jurisdiction; not classified as hazardous under most local waste coding systems
Precautions: Prevent spill run-off or product in non-designated disposal areas; contain and treat contaminated water
UN Number: Not regulated as dangerous goods
Transport Label: No special label for transportation
Shipping Name: Lignin sulfonic acid or equivalent trade name
Hazard Class: Not assigned
Packing Group: Not assigned
Special Provisions: Standard covering for dry and wet product; keep containers protected from excessive moisture during transit
Labelling: Not regulated as hazardous material in most regions; general chemical labeling best practice
REACH Compliance: Registered and pre-registered in EU chemical safety database
TSCA (USA): Listed
DSL/NDSL (Canada): Listed with no assigned regulatory restrictions
Other Local Regulations: Complies with regulations for use in animal feed and agriculture based on regional laws
Workplace Safety: Basic chemical hygiene training recommended for regular handlers
Restrictions: Local use restrictions may apply; refer to regional environmental and safety guidelines for industrial application
