Product Name: Lignosulfonic Acid, Calcium Salt
Synonyms: Calcium lignosulfonate
Chemical Family: Lignosulfonates
CAS Number: 8061-52-7
Recommended Usage: Dispersant, dust suppressant, binder, animal feed additive
Manufacturer Identification: Supplier address, contact number, and emergency phone number should be included on product label
Classification: Not classified as hazardous under GHS
Signal Word: None
Hazard Statements: May cause minor respiratory irritation if dust or aerosols are inhaled; direct contact may cause mild eye irritation
Precautionary Statements: Avoid breathing dust; wash hands thoroughly after handling; wear protective eyewear
Symptoms: Coughing or sneezing if dust inhaled, mild eye redness if direct exposure occurs
Chemical Name: Lignosulfonic Acid, Calcium Salt
Concentration: 92–99%
Impurities: Trace amounts of reducing sugars, sodium, potassium, magnesium, moisture variable depending on manufacturing process
Common Additives: May contain inert fillers or traces of residual organics from wood processing
Inhalation: Move person to fresh air; seek medical attention if symptoms persist
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes; remove contact lenses; consult a physician if irritation continues
Skin Contact: Wash with soap and water; remove contaminated clothing
Ingestion: Rinse mouth; do not induce vomiting; drink water if conscious; call a physician if discomfort develops
Notes to Physician: No specific antidote; treat based on symptoms and supportive measures
Suitable Extinguishing Media: Water spray, dry chemical powder, foam, or carbon dioxide
Unsuitable Media: Avoid high-pressure water streams that might spread powdered material
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, sulfur oxides, and trace organics
Special Protective Equipment: Firefighters should use self-contained breathing apparatus and full protective gear
Explosion Sensitivity: Fine dust may accumulate and form explosive mixtures with air in confined spaces
Personal Precautions: Avoid dust formation; ventilate area; wear dust mask and goggles
Environmental Precautions: Prevent runoff into drains, surface and ground water systems
Methods for Clean-Up: Sweep or vacuum material; avoid using compressed air; collect in appropriate containers for disposal; wash area with water
Spill Reporting: Follow local regulations for reporting significant spills
Safe Handling: Keep containers closed to avoid moisture absorption; handle in well-ventilated area
Hygiene Practices: Wash hands, arms, and face after handling
Storage: Store in a dry, cool, well-ventilated place; keep away from incompatible materials like strong oxidizers; avoid contact with moisture to prevent clumping
Packaging Materials: Paper bags, bulk containers, plastic drums with secure lids or liners
Exposure Limits: No established OSHA or ACGIH limits; treat as nuisance dust (10 mg/m³ total dust, 3 mg/m³ respirable fraction)
Engineering Controls: Use local exhaust ventilation in dusty processing areas
Respiratory Protection: Use approved particulate respirators in case of excessive dust
Eye Protection: Chemical safety goggles
Skin Protection: Protective gloves for prolonged exposure
Other Protective Equipment: Wear coveralls and workplace shoes
Appearance: Brown to dark brown powder or granular solid
Odor: Slight woody or earthy odor
Odor Threshold: Not available
pH: 4–7 in 10% aqueous solution
Melting Point: Decomposes before melting
Boiling Point: Not applicable (decomposes)
Flash Point: No data available
Evaporation Rate: Not applicable
Flammability: Dust may be combustible
Vapor Pressure: Not relevant
Relative Density: 0.5–0.7 (bulk)
Solubility: Soluble in water, insoluble in most organic solvents
Partition Coefficient: Not determined
Auto-ignition Temperature: Not established
Decomposition Temperature: Above 200 °C
Viscosity: Not applicable
Formulation Additives: May include anti-caking agents depending on supplier
Chemical Stability: Stable under normal storage and use conditions
Reactivity: No significant reactivity under standard conditions
Incompatible Materials: Strong oxidizing agents such as peroxides, acids
Hazardous Decomposition Products: Burning can produce carbon oxides, sulfur oxides, low molecular weight organics
Polymerization: No hazardous polymerization expected
Conditions to Avoid: Excessive moisture, high temperature, sources of ignition in dusty conditions
Acute Toxicity: Low acute toxicity based on available data; LD50 oral (rat) >2,000 mg/kg
Irritation: Mild eye, skin, and respiratory irritation may occur
Sensitization: No known skin or respiratory sensitization
Chronic Effects: No evidence of chronic or long-term toxicity
Carcinogenicity: Not listed as a carcinogen by IARC, NTP, OSHA
Mutagenicity: Not expected to be mutagenic
Reproductive Toxicity: Not expected
Specific Target Organ Toxicity: None identified
Experience and Observations: Handling bulk quantities over years in feed, concrete, or dust control work points to very low hazard profile; basic dust precautions prove effective
Ecotoxicity: Low acute aquatic toxicity; limited impact on fish, daphnia, algae (EC50 >100 mg/L in studies)
Persistence and Degradability: Biodegradable; breaks down slowly in water and soil
Bioaccumulation Potential: Not expected to bioaccumulate based on chemical structure
Mobility in Soil: Readily soluble in water, may leach through soil but expected to degrade gradually
Other Adverse Effects: High concentrations in natural water may increase COD/BOD but practical use rates tend to limit impact
Waste Treatment Methods: Dispose of in accordance with federal, state, and local regulations; can often be landfilled as non-hazardous waste
Product Disposal: Small amounts may be flushed with water to sewer with approval of local authorities
Packaging Disposal: Clean, empty packaging may be recycled or disposed of as solid waste
Precautions: Avoid generating dust during disposal; minimize release to the environment
UN Number: Not regulated
Transport Hazard Class: Not classified as hazardous for transport
Packing Group: Not applicable
Environmental Hazards: Not an environmental hazard in transit
Special Precautions for Transport: Protect from moisture and physical damage during shipment
Labels: No specific transport labels required
TSCA Status: Listed in the United States Toxic Substances Control Act Inventory
EINECS/ELINCS: European inventory registration applies
DSL/NDSL: Listed or exempt under Canada regulations
OSHA Standards: Not specifically regulated but treat as nuisance dust
SARA Title III: Not subject to reporting under Section 313
REACH Status: Pre-registered or registered for uses in the EU
Other Regulatory Approvals: May be approved for use in food, animal feed, or construction applications under national codes; check specific allowances by jurisdiction
