© 2026 Nanjing Finechem Holdings Co., Ltd,
All Right Reserved
Product Name: Stearic Acid
Chemical Formula: C18H36O2
CAS Number: 57-11-4
Synonyms: Octadecanoic Acid
Recommended Use: Used in cosmetics, rubber manufacturing, candle making, and lubricants.
Manufacturer Contact: [Contact information needed, varies with supplier]
Emergency Phone: [Refer to local safety guidelines for chemical emergencies]
GHS Classification: Not classified as hazardous according to Regulation (EC) No 1272/2008.
Physical Hazards: Dust may form explosive mixture with air.
Health Hazards: Short-term contact with dust or powder may irritate skin, eyes, respiratory tract.
Environmental Hazards: May be harmful to aquatic organisms if large quantities enter waterways.
Signal Word: None under normal conditions.
Hazard Statements: May cause mild skin or eye irritation. Fine particles present a fire or explosion risk.
Precautionary Statements: Avoid generating dust, use with adequate ventilation, prevent release to the environment.
Chemical Name: Stearic Acid
Concentration: 90–100% by weight
Impurities: Palmitic acid and other fatty acids may appear in some samples.
Additional Additives: Typically none specified unless blended for special applications.
Inhalation: Move to fresh air, monitor breathing, seek medical attention if symptoms develop.
Skin Contact: Wash thoroughly with soap and plenty of water. Seek medical advice if rash or irritation persists.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do; continue rinsing.
Ingestion: Give water to dilute. Do not induce vomiting; seek medical attention if feeling unwell.
Symptoms: Potential redness, mild coughing, slight discomfort, or irritation.
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam.
Unsuitable Media: Do not use water jet as it may cause spattering.
Special Hazards: Thermal decomposition can release irritating fumes, including acrolein and acetic acid.
Protective Equipment: Firefighters should use full protective clothing and self-contained breathing apparatus.
Advice for Firefighters: Cool nearby containers with water spray to prevent rupture, avoid breathing smoke.
Personal Precautions: Use proper ventilation; dust mask if dusting is possible; avoid contact with skin, eyes.
Environmental Precautions: Prevent uncontrolled release into drains, soil, or surface water.
Methods for Cleanup: Sweep up solid carefully to avoid dust; place in labeled containers for recovery or disposal.
Spill Response: Use non-sparking tools, ventilate area, dampen powder if needed to reduce airborne particles.
Precautions for Safe Handling: Avoid dust generation. Use local exhaust/ventilation. Wash hands after handling.
Conditions for Safe Storage: Store in a cool, dry, well-ventilated area away from incompatible substances like strong oxidizers.
Incompatible Materials: Oxidizing agents, strong acids, alkalis.
Bulk Storage: Use sealed containers to avoid moisture absorption and contamination.
Occupational Exposure Limits: No strict regulatory limit; minimize exposure as good practice.
Engineering Controls: Local exhaust ventilation, process enclosures where dusting occurs.
Personal Protection: Wear safety goggles, gloves, clean long-sleeved work clothing, dust mask for airborne particles.
Respiratory Protection: Approved particulate respirators in dusty conditions.
Hygiene Measures: Wash before eating, drinking, or smoking. Remove contaminated clothing.
Appearance: White, waxy solid or powder
Odor: Faint, fatty odor
pH: Slightly acidic in water
Melting Point: 69–70°C (156–158°F)
Boiling Point: 361°C (682°F) at 760 mmHg
Flash Point: 196°C (385°F)
Flammability: Can ignite at high temperature; dust explosion risk
Solubility: Insoluble in water; soluble in alcohol, ether
Vapor Pressure: Negligible at room temperature
Density: About 0.847 g/cm³ at 20°C
Chemical Stability: Stable under normal storage and handling conditions.
Hazardous Reactions: May react with strong oxidizers, causing fire hazard.
Conditions to Avoid: Sources of ignition, excessive heat, dust accumulation.
Decomposition Products: Irritating fumes such as acrolein and short-chain organic acids.
Routes of Exposure: Inhalation, skin, eyes, ingestion.
Acute Toxicity: LD50 (oral, rat) > 5000 mg/kg (minimal toxicity).
Skin/Eye Contact: May cause mild irritation to skin and eyes.
Respiratory: Dust inhalation could provoke coughing, throat discomfort.
Chronic Effects: No evidence for carcinogenic, mutagenic, or reproductive toxicity in humans.
Allergic Reactions: Rare.
Toxicity to Aquatic Life: No significant toxicity at environmental concentrations.
Persistence/Degradability: Biodegradable; breaks down by natural processes.
Bioaccumulation: Not expected to bioaccumulate significantly.
Mobility in Soil: Limited; binds to soil particles and organic matter.
Other Effects: Large amounts in water could cause surface films that affect oxygen transfer.
Disposal Methods: Collect and send to approved waste disposal facility; observe national and local regulations.
Recycling: Possible if material remains uncontaminated and meets use requirements.
Contaminated Packaging: Clean thoroughly before reuse or recycling, otherwise dispose of as chemical waste.
UN Number: Not regulated for transport.
Proper Shipping Name: Not classified as dangerous goods.
Transport Hazard Class: None
Packing Group: None
Special Precautions: Prevent packaging from breaking; keep dry to avoid clumping and dust formation.
EU Regulations: Complies with REACH; not listed as a hazardous substance.
US Regulations (OSHA): Not classified as hazardous.
Canada (WHMIS): Not controlled.
Australia (AICS): Listed.
International Inventories: Registered in main chemical inventories globally.
