Product Name: Ligninsulfonic Acid
Synonyms: Lignin Sulfonic Acid, Sulfonated Lignin
Chemical Family: Lignin derivatives
CAS Number: 8061-51-6
Recommended Use: Dispersant, binding agent, concrete additive, dyeing industries
Manufacturer’s Contact Details: Company name, address, emergency phone number, and email
Emergency Overview: Brown powder or liquid, has mild sulfonic odor. Usually stored in bulk containers or drums.
GHS Classification: Not classified as hazardous under GHS criteria
Physical Hazards: Non-flammable, low dust risk.
Health Hazards: Ingestion and inhalation in large amounts cause mild irritation to gastrointestinal tract or upper airways. Direct skin or eye contact may lead to slight redness or discomfort. Prolonged exposure to high concentrations in air may cause headaches or coughing.
Environmental Hazards: May cause local oxygen depletion in aquatic environments due to organic content. No acute aquatic toxicity reported.
Signal Word: None required
Pictograms: No symbol
Hazard Statements: Low hazard for intended use.
Precautionary Statements: Avoid unnecessary contact with skin and eyes. Wash thoroughly after handling. Use proper ventilation when handling powders.
Chemical Name: Ligninsulfonic Acid
CAS Number: 8061-51-6
Concentration: 90-100%
Impurities/Additives: Trace sodium, calcium, or magnesium salts; trace residual process chemicals
Other Components: Water content may vary in aqueous products
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do, keep rinsing. Seek medical attention if irritation lingers.
Skin Contact: Wash affected skin thoroughly with soap and water. Remove contaminated clothing. Irritation usually subsides after washing.
Inhalation: Move person to fresh air. Encourage slow, deep breathing. Provide oxygen if breathing gets difficult. Consult healthcare provider if symptoms persist.
Ingestion: Give water to rinse mouth. Seek prompt medical advice in cases of large ingestion, persistent discomfort, or vomiting.
Symptoms: Irritation to airways or stomach. Redness or rash.
Notes for Physician: Treat symptomatically. No specific antidote required.
Suitable Extinguishing Media: Water spray, foam, dry chemical, or CO2. Use agents appropriate for surrounding fire.
Unsuitable Extinguishing Media: Do not use direct stream of water on powder as it may spread material.
Specific Hazards: Material itself is not flammable. Combustion releases carbon monoxide, carbon dioxide, sulfur oxides.
Protective Equipment: Firefighters wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Special Procedures: Cool exposed containers with water mist to prevent rupture from heat.
Personal Precautions: Avoid dust generation, ventilate area, wear suitable protective gear (gloves, goggles, dust mask).
Environmental Precautions: Prevent runoff into waterways. Large spills could cause oxygen reduction in aquatic environments.
Methods for Cleanup: Sweep up spills and place into compatible containers for disposal. Rinse area with water to remove residual traces.
Preventative Cleaning: Remove solid residues promptly to avoid slipperiness or buildup.
Handling: Use with adequate ventilation. Open containers gently to avoid dust clouds. Avoid direct inhalation or contact with skin and eyes. Clean spills immediately.
Hygiene: Wash hands thoroughly after handling. Do not eat, drink, or smoke in work area.
Storage: Store in cool, dry, well-ventilated area away from strong acids or oxidizers. Keep containers tightly closed. Store away from food, feed, and potable water.
Specific Uses: Follow manufacturer instructions for application and compatibility with other chemicals.
Exposure Limits: No established occupational exposure limits. Avoid excessive dust inhalation.
Engineering Controls: Local exhaust or general room ventilation meet typical needs.
Personal Protective Equipment (PPE): Safety goggles, protective gloves (nitrile or latex), dust mask or approved respirator in case of airborne powder,
Skin Protection: Lab coat or long sleeves recommended.
Eye Protection: Safety glasses with side shields or goggles.
Respiratory Protection: NIOSH-approved respirators if airborne concentrations approach nuisance dust levels.
Environmental Controls: Collect all residues, avoid direct discharge to drains and waterways.
Appearance: Brown granules, powder, or dark brown liquid
Odor: Slight sulfonic or woody aroma
Odor Threshold: Not available
pH: 3.0 - 5.0 (10% solution)
Melting Point / Freezing Point: Not determined
Boiling Point: Above 100°C for aqueous solutions
Flash Point: Not applicable (nonflammable)
Evaporation Rate: Not determined
Flammability: Not flammable
Vapor Pressure: Negligible
Vapor Density: Not available
Relative Density: 1.5 - 1.8 (solid); 1.25 - 1.40 (liquid)
Solubility: Readily soluble in water
Partition Coefficient: Not determined
Auto-ignition Temperature: Not self-igniting
Decomposition Temperature: Above 180°C
Viscosity: Varies with grade; liquids are moderately viscous
Particle Size: Powder usually <500 µm
Chemical Stability: Stable in normal conditions of storage and use.
Reactivity: Not reactive under anticipated storage or use.
Conditions to Avoid: Strong acids, strong oxidizers, excessive moisture for powder forms.
Incompatible Materials: Strong acidic agents can release sulfur oxides; strong oxidizing agents may cause exothermic reactions.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, sulfur oxides form on combustion or thermal degradation.
Polymerization: Will not occur.
Acute Toxicity: LD50 (oral, rat) above 5000 mg/kg; not toxic by conventional estimate.
Inhalation: Nuisance dust can cause respiratory irritation if inhaled in large quantities.
Skin Contact: Mild, short-lived irritation possible.
Eye Contact: Temporary irritation with direct contact.
Ingestion: Large amounts might cause nausea, vomiting, abdominal cramps
Chronic Effects: No reported cases of chronic toxicity or sensitization.
Carcinogenicity: Not listed as a carcinogen by IARC, NTP, OSHA or ACGIH.
Mutagenicity / Reproductive Toxicity: No evidence or reports
Medical Conditions Aggravated by Overexposure: Pre-existing respiratory disorders may temporarily worsen with acute dust exposure.
Persistence and Degradability: Biodegradable under aerobic and anaerobic conditions.
Bioaccumulation: Not expected to bioaccumulate.
Mobility in Soil: Water-soluble, can move through soils but retained due to organic binding.
Aquatic Toxicity: Low acute toxicity to fish, daphnia, and algae.
Other Adverse Effects: High concentrations can lower dissolved oxygen in aquatic environments.
Chemical Fate: Degrades by microbial action, leaving low-impact residuals.
Product Disposal: Dispose through approved industrial/commercial waste handler. Product may be landfilled or incinerated as permitted by local regulations.
Container Disposal: Empty containers should be triple-rinsed before recycling or disposal.
Disposal Precautions: Avoid uncontrolled release to environment. Do not discharge to sewers or open water.
Further Guidance: Follow local, regional, and national guidelines for waste classification and disposal procedures.
UN Number: Not regulated for transport
UN Proper Shipping Name: Not classified as dangerous goods
Transport Hazard Class: None
Packing Group: None
Marine Pollutant: No
Special Precautions: Protect from moisture and direct sunlight during transit.
Transport Labeling: Standard labeling with product identity suffices for most jurisdictions.
US Regulations: Not subject to TSCA restrictions. Not listed on SARA Title III Section 313. No reportable quantity.
EU Regulations: Not classified as hazardous under CLP Regulation (EC) No 1272/2008.
REACH Registration: Registered where required. Exempt based on polymer status in many cases.
Canada: Listed on DSL/NDSL, not WHMIS classified as dangerous.
Other Global Regulations: Meets chemical safety and labeling requirements for non-hazardous industrial chemicals.
Worker Training Requirements: Staff must understand risks and PPE, SDS available at workplace.
Other Notices: Subject to environmental and occupational health general controls, not regarded as a PBT or vPvB substance.
