Adipic Acid

Adipic Acid (CAS 124-04-9)

Adipic acid, also known as hexanedioic acid or 1,6-hexanedioic acid, is a high-purity dicarboxylic acid with CAS number 124-04-9. This white crystalline organic compound serves as one of the most important industrial intermediates worldwide, primarily used as a key monomer in the production of Nylon 6,6. With excellent chemical stability and dual carboxylic acid functionality, adipic acid is widely applied in polymers, food additives, plasticizers, and specialty chemicals.

Common Synonyms

• Hexanedioic acid

• 1,6-Hexanedioic acid

• 1,4-Butanedicarboxylic acid

• Adipinic acid

• Adipic acid (E355 food-grade)

  
  

Primary Applications and Uses

Adipic acid is an essential building block across multiple high-volume industries:

• Nylon & Polymer Production: Approximately 60–80% of global adipic acid is consumed in the manufacture of Nylon 6,6 through polycondensation with hexamethylenediamine. Also used in polyurethanes, polyester polyols, and engineering plastics.

  
  

• Plasticizers & Resins: Key raw material for PVC plasticizers, alkyd resins, and synthetic lubricants.

  
  

• Food & Beverage Industry: Approved as food additive E355 – functions as an acidity regulator, flavor enhancer, and gelling agent in powdered drinks, desserts, and imitation jams.

  
  

• Pharmaceuticals & Cosmetics: Used in controlled-release drug formulations, effervescent tablets, and personal care products.

  
  

• Other Applications: Flame retardants, adhesives, coatings, paper chemicals, and flue gas desulfurization additives.

  
  

Its balanced reactivity and high purity make it ideal for large-scale continuous polymerization processes with excellent yield and consistent quality.

Product Specifications

Safety and Handling

Adipic acid is generally considered low-toxicity and stable under normal conditions. It may cause mild irritation to eyes, skin, and respiratory tract in dust form. Use appropriate personal protective equipment including dust mask, safety goggles, and gloves when handling. Store in a cool, dry, well-ventilated warehouse away from strong oxidizing agents, bases, and moisture. Keep containers tightly closed. In case of contact, rinse affected area with plenty of water. Dispose of waste in accordance with local environmental regulations.

Frequently Asked Questions (FAQs)

Q1: What is the CAS number of adipic acid?

A: The CAS registry number is 124-04-9.

Q2: What is adipic acid mainly used for?

A: It is primarily used as a monomer for Nylon 6,6 production, as well as in polyurethanes, plasticizers, food additives (E355), and pharmaceuticals.

Q3: Is adipic acid food grade?

A: Yes, high-purity grades meeting FCC and E355 standards are available for direct food and beverage applications.

Q4: How should adipic acid be stored?

A: Store in a cool, dry, ventilated area below 30 °C. Protect from moisture and direct sunlight. Keep away from strong oxidizers and bases.

Q5: What purity levels are available?

A: Standard industrial grade ≥99.0%, high-purity polymer grade ≥99.8%, and food/pharma grades with customized impurity profiles.

Q6: Is adipic acid hazardous?

A: It is not classified as highly hazardous. It is combustible as dust and may cause mild irritation. Standard industrial hygiene practices are recommended.

Q7: What are the main synonyms for adipic acid?

A: Hexanedioic acid, 1,6-hexanedioic acid, 1,4-butanedicarboxylic acid, and adipinic acid.

Q8: Can adipic acid be used in Nylon 6,6 manufacturing?

A: Yes, it is the standard monomer worldwide for Nylon 6,6 fibers, resins, and engineering plastics. Polymer-grade material ensures low impurity levels for high molecular weight polymers.

Q9: What packaging options are available for bulk orders?

A: 25 kg multi-layer paper bags, 500 kg/1000 kg FIBC big bags, and full container load (25 MT) bulk shipments.

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Adipic Acid CAS 124-04-9 – premium quality dicarboxylic acid for Nylon, polymers, and specialty applications.