Adipic Acid
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Adipic acid, chemically known as hexanedioic acid (C₆H₁₀O₄), is a key industrial organic compound recognized for its role in polymer production. Primarily, it serves as a crucial precursor in the manufacture of nylon 6,6, where it reacts with hexamethylenediamine to form this durable synthetic polymer, widely used in textiles, automotive components, and industrial plastics. Beyond nylon, adipic acid is integral to producing polyurethane foams, found in mattresses, insulation, and car seats, due to its ability to enhance material flexibility and strength. It also finds applications as a food additive (E355), where it acts as an acidity regulator in gelatin desserts, beverages, and baked goods. Additionally, adipic acid derivatives are used in plasticizers for PVC products, synthetic lubricants, adhesives, and even cosmetics. While traditionally derived from petroleum-based processes, growing interest in sustainable alternatives has spurred research into bio-based production methods using renewable resources. Overall, adipic acid’s versatility makes it indispensable across multiple industries, from manufacturing to food technology
Description
Adipic Acid Uses
Nylon Production (Primary Use)
- Nylon 6,6: Adipic acid is a key monomer, reacting with hexamethylenediamine (HMDA) to produce nylon 6,6, a strong and durable synthetic polymer used in:
- Textiles (clothing, carpets)
- Automotive parts (tires, hoses)
- Industrial fibers and ropes
- Engineering plastics
Polyurethane Foams
- Used as a precursor in the production of polyurethane foams(flexible and rigid), which are found in:
- Mattresses, cushions, and furniture
- Insulation materials
- Automotive seating
Food Additive (Minor Use)
- Acts as an acidulant (E355)to regulate acidity in:
- Gelatin desserts
- Beverages (powdered drinks)
- Baked goods (leavening agent)
- Provides a tart flavor, similar to citric acid.
Plasticizers
- Used to produce adipate esters(e.g., dioctyl adipate), which improve flexibility in:
- PVC products (wires, cables, flooring)
- Synthetic rubbers
Lubricants & Greases
- Adipic acid derivatives enhance the performance of synthetic lubricants in high-temperature applications.
Pharmaceuticals & Cosmetics
- Used in controlled-release drug formulations.
- Acts as a buffering agent in cosmetics and personal care products.
Other Industrial Uses
- Corrosion inhibitorsin metalworking fluids.
- Adhesivesand coatings for improved durability.
- Resinsfor paints and varnishes.
Additional information
| APPEARANCE |
Crystalline ,GRANULAR – (Small, coarse grains e.g., salt) |
|---|---|
| CONCENTRATION |
100% ,99.5% |
| AVAILABLE PACK SIZE |
25kg( Metal or Plastic Jerrycan/ Bucket, Bag, Box, Polythene bag, Carton bag) |
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KEY ATTRIBUTES
1. Basic Identification Attributes
- Chemical Name: Hexanedioic acid (IUPAC)
- CAS Number: 124-04-9
- HS Code: 2917.12.00 (Acyclic polycarboxylic acids)
- Molecular Formula: C₆H₁₀O₄
- Synonyms: 1,4-Butanedicarboxylic acid, Acifloctin, Adilactetten
2. Physical & Chemical Properties
- Physical State: White crystalline powder
- Color & Odor: White; odorless
- Boiling Point: 337.5°C (decomposes)
- Melting Point: 152-154°C
- Density: 1.36 g/cm³ (20°C)
- Solubility:
- Water: 14 g/L (20°C), 160 g/L (60°C)
- Ethanol: 59 g/L (20°C)
- Poor in ether, benzene
- pH Level: 3.2 (0.1% solution, acidic)
- Vapor Pressure: <0.1 mmHg (20°C)
- Flash Point: 196°C (closed cup)
- Autoignition Temperature: 420°C
- Viscosity: 4.54 cP (160°C melt)
- Refractive Index: 1.4283 (20°C)
3. Safety & Hazard Attributes
- Hazard Class:
- Skin Irritant (Category 2)
- Eye Irritant (Category 2A)
- NFPA Ratings: Health-1, Flammability-1, Reactivity-0
- Exposure Limits:
- OSHA PEL: Not established
- ACGIH TLV: Not established (dust: 10 mg/m³ inhalable particulate)
- Reactivity:
- Stable under normal conditions
- Reacts with strong oxidizers, bases
- Forms explosive mixtures with air (dust)
4. Storage & Handling Attributes
- Storage Conditions:
- Cool, dry, well-ventilated area
- Keep containers tightly closed
- Temperature: <30°C recommended
- Incompatible Materials:
- Strong oxidizers, bases, reducing agents
- Container Type:
- Polyethylene-lined bags (25-50 kg)
- Fiber drums (100-200 kg)
- Shelf Life: >2 years if properly stored
- Special Handling:
- PPE: Dust mask, gloves (nitrile), safety goggles
- Use local exhaust ventilation for dust control
5. Regulatory & Compliance Attributes
- Regulatory Status:
- EPA: Listed under TSCA
- REACH: Registered
- FDA: 21 CFR 175.300 (indirect food additive)
- Hazard Symbols:
- GHS Pictograms: Exclamation Mark
- Transportation Restrictions:
- Not classified as dangerous goods
- Waste Disposal:
- Incineration or landfill (non-hazardous)
- Neutralization for large quantities
6. Environmental & Health Impact
- Ecotoxicity:
- LC50 (fish): >100 mg/L (96h)
- EC50 (daphnia): >100 mg/L (48h)
- Persistence:
- Readily biodegradable (OECD 301B)
- BOD5/COD: 0.6-0.8
- Carcinogenicity:
- IARC: Not classified
- NTP: Not listed
- ACGIH: Not classified
- Biodegradability:
- 80-100% in 28 days (OECD 301B)
SAFETY PRECAUTIONS
General Handling:
- Use in well-ventilated areasto prevent dust accumulation
- Avoid creating dust clouds(can be irritating to respiratory system)
- Keep away from strong oxidizers(may cause fire/explosion)
- Use non-sparking toolsin handling areas
Personal Protective Equipment (PPE):
- Respiratory Protection:NIOSH-approved N95 dust mask for dust control
- Eye Protection:Chemical splash goggles
- Skin Protection:Nitrile or neoprene gloves, lab coat or protective clothing
- Foot Protection:Closed-toe shoes
Storage:
- Store in tightly sealed containersin cool, dry areas
- Keep away from heat sources and incompatible materials (strong bases, oxidizers)
- Ensure containers are properly labeled
Special Considerations:
- Electrostatic Hazard:Ground equipment when transferring powdered form
- Dust Explosion Hazard:Control dust accumulation in work areas
- Environmental Hazard:Prevent release to environment
Inhalation:
- Move to fresh air immediately
- If breathing is difficult, give oxygen
- Seek medical attention if irritation persists
Eye Contact:
- Flush with lukewarm water for at least 15 minutes
- Hold eyelids open during flushing
- Seek medical attention if irritation continues
Skin Contact:
- Remove contaminated clothing
- Wash thoroughly with soap and water
- Apply moisturizer if dryness occurs
- Seek medical attention for irritation or burns
Ingestion:
- Rinse mouth with water
- Drink plenty of water (200-300 mL)
- Do NOT induce vomiting
- Seek medical attention if large amounts are swallowed
Fire Hazards:
- Combustible solid (powder form more hazardous)
- May decompose at high temperatures (>230°C/446°F)
- Forms irritating fumes when heated
Extinguishing Methods:
- Use water spray, fog, or foam
- Dry chemical powdercan be used
- CO₂may be effective for small fires
Special Firefighting Procedures:
- Wear self-contained breathing apparatus (SCBA)
- Cool containers exposed to fire with water
- Move undamaged containers from fire area if safe
- Prevent dust clouds during firefighting
Spill Management
- Wear appropriate PPE (dust mask, goggles, gloves)
- Avoid creating dust
- Sweep or vacuum with explosion-proof equipment
- Small spills: collect in suitable containers
- Large spills: contain with inert absorbent material
- Dispose according to local regulations
Additional Safety Information
- NFPA Rating:Health: 1, Flammability: 1, Instability: 0
- Autoignition Temperature:420°C (788°F)
- Flash Point:196°C (385°F) - closed cup
- Disposal:Follow local regulations for organic acid disposal
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