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Product Name: Adipic Acid
Chemical Formula: C6H10O4
Synonyms: Hexanedioic acid
CAS Number: 124-04-9
Manufacturer Details: Manufacturers of industrial chemicals typically provide their contact details on packaging. Phone numbers and emergency contact information appear on invoices and shipping documents. Every workplace should have this uploaded to their systems for easy access.
Intended Use: Chemical manufacturing, polymer production, plasticizer synthesis, food additive (acidulant, flavoring agent), intermediate for adipate esters and nylon-6,6.
GHS Classification: Eye Irritant Category 2A, Skin Irritant Category 2
Signal Word: Warning
Hazard Statements: Causes serious eye irritation, Causes skin irritation, May cause respiratory irritation in dusty environments
Pictograms: Exclamation mark symbol
Precautionary Statements: Avoid breathing dust, Wash hands thoroughly after handling, Use personal protective equipment as required, In case of eye contact, rinse cautiously
Chemical Name: Adipic Acid
Concentration: 99% or higher in pure industrial grades
Impurities: Trace amounts of cyclohexanone, cyclohexanol, and other byproducts possible from manufacturing processes
CAS Registry Number: 124-04-9
Eye Contact: Immediately flush with water for at least 15 minutes. Eyelids should be held open and moved occasionally to ensure thorough rinsing. Remove contact lenses if present. Seek medical attention if irritation persists.
Skin Contact: Wash affected area with soap and plenty of water. Remove contaminated clothing, and launder before reuse. If skin irritation continues, consult a healthcare professional.
Inhalation: Move to fresh air, keep person calm and warm. Seek medical advice if symptoms such as coughing, sore throat, or breathing difficulty appear.
Ingestion: Rinse mouth thoroughly with water. Do not induce vomiting. Get medical help if larger quantities are swallowed or if there are any symptoms.
Suitable Extinguishing Media: Use dry chemical powder, carbon dioxide, water spray, or foam to extinguish fires involving adipic acid dust.
Hazardous Combustion Products: Produces carbon monoxide and carbon dioxide when burned. Fumes may be irritating or toxic.
Fire/Explosion Hazards: Fine powder can form explosive dust clouds in air. Keep away from ignition sources.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and protective equipment to prevent inhalation of smoke and fumes.
Procedures: Cool closed containers exposed to fire with water spray. Smother flames carefully to avoid spreading powder.
Personal Precautions: Evacuate unnecessary personnel. Avoid breathing dust. Wear respiratory protection, gloves, goggles, and protective clothing.
Environmental Precautions: Prevent powder from entering drains, sewers, or watercourses. Use absorbent materials to contain and collect spills.
Methods for Cleanup: Sweep up solids without generating excessive dust. Shovel into suitable labeled containers for proper disposal. Wash area thoroughly with water after cleanup.
Handling: Always wear proper protective equipment. Avoid generating and inhaling dust during handling. Keep containers closed when not in use. Ban sources of ignition in areas where adipic acid dust may be suspended.
Storage: Store in cool, dry, well-ventilated areas away from incompatible materials such as oxidizing agents and strong bases. Keep product in tightly sealed containers. Protect from direct sunlight, excessive moisture, and strong heat.
Special Requirements: Provide eye-wash stations and safety showers in work areas. Clean spills promptly to minimize dust and slipping hazards.
Engineering Controls: Use local exhaust ventilation to control airborne dust concentrations. Facilities should monitor workplace air regularly and keep levels below recommended exposure standards.
Exposure Limits: OSHA and ACGIH have established limits of 5 mg/m³ for adipic acid particulates.
Personal Protection: Wear chemical goggles or safety glasses, dust mask or respirator approved for particulates, gloves made of PVC, nitrile, or rubber, and protective clothing such as long-sleeved shirts and pants.
Hygiene Measures: Wash hands thoroughly before eating, drinking, or smoking. Remove contaminated clothing right away. Do not eat, drink, or smoke around the substance.
Appearance: White, free-flowing crystalline powder
Odor: Odorless to slightly pungent
Molecular Weight: 146.14 g/mol
Melting Point: 151 – 154°C
Boiling Point: 337°C (decomposes)
Solubility: Soluble in water (14 g/100 mL at 20°C), ethanol, and acetone
Density: 1.36 g/cm³
pH: 2.5 (0.1 M solution)
Flammability: Dust particles can become combustible under specific conditions
Chemical Stability: Stable under normal storage, handling, and transportation conditions
Conditions to Avoid: High temperatures, direct sunlight, and sources of ignition that encourage dust cloud formation
Incompatible Materials: Strong oxidizers, amines, strong bases, reducing agents
Hazardous Decomposition: May release carbon dioxide and carbon monoxide if heated to decomposition
Acute Exposure: Inhalation of dust may irritate respiratory tract, eyes, and skin. High ingestion can lead to abdominal pain, nausea, vomiting.
Chronic Exposure: Long-term exposure to dust may result in respiratory issues and persistent skin or eye irritation.
Dermal Toxicity: No significant toxicity through the skin, but repeated contact can cause irritation.
LD50 Values: Oral (rat) > 5000 mg/kg. Low toxicity compared to many industrial chemicals.
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, or OSHA.
Sensitization: No data indicating that adipic acid causes allergic skin reactions in humans.
Aquatic Toxicity: LC50 for freshwater fish 97 mg/L (96 hours). Harmful when present in large concentrations, but moderate biodegradability reduces long-term impact.
Persistence and Degradability: Biodegrades under aerobic conditions within weeks. Low potential for persistence in soil or water.
Bioaccumulative Potential: Low; does not build up in aquatic organisms.
Mobility in Soil: Highly soluble in water, moves easily if spilled into ground or waterways.
Other Adverse Effects: Large spills may lower pH of water bodies and disrupt aquatic ecosystems.
Waste Management: Collect and place in containers suited for chemical waste. Transport to approved waste disposal facility.
Disposal Methods: Landfill or incineration in accordance with federal, state, and local regulations. Avoid dumping into sewers, waterways, or open ground.
Packaging Disposal: Empty, rinse, and recycle or dispose of packaging per regulatory guidance.
UN Number: 9077
Proper Shipping Name: Adipic Acid
Transport Hazard Class: Not classified as a hazardous material for land, sea, or air transport; may be considered a nuisance dust.
Packing Group: III
Special Precautions: Package securely to prevent dust release. Avoid shipping with oxidizers.
TSCA Status: Listed on US Toxic Substances Control Act inventory
REACH Registration: Registered substance in the European Union
SARA Title III: Does not contain components reportable under Sections 302/304/313
Workplace Exposure: OSHA/ACGIH workplace limits for particulates
Other Regulations: Product packaging must include appropriate hazard symbols and precautionary statements in compliance with local occupational safety laws. Safety data must be provided to all employees potentially exposed to the substance during use or production.
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
