Name | Adipic anhydride |
Synonyms | 2,7-oxepanedion ADIPIC ANHYDRIDE 2,7-oxepanedione Adipic anhydride 2,7-Oxepanedione Oxepane-2,7-dione Hexanedioic anhydride 3-propyloxetane-2,4-dione Hexahydrooxepin-2,7-dione Hexanedioic acid anhydride Butanedicarboxylic anhydride |
CAS | 2035-75-8 |
EINECS | 218-001-1 |
InChI | InChI=1/C6H8O3/c1-2-3-4-5(7)9-6(4)8/h4H,2-3H2,1H3 |
Molecular Formula | C6H8O3 |
Molar Mass | 128.13 |
Density | 1.183±0.06 g/cm3(Predicted) |
Melting Point | 60-64 °C |
Boling Point | 98~100℃/0.1mm |
Flash Point | 58.1°C |
Vapor Presure | 2.44mmHg at 25°C |
Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
Refractive Index | 1.456 |
Reference Show more | 1. [IF=7.514] Ting Zhang et al."Anhydride structures affect the acylation modification and emulsion stabilization ability of mammalian and fish gelatins."Food Chem. 2022 May;375:131882 |
Adipic anhydride (also known as adipate ester) is an organic compound with the chemical formula C6H8O3. The following is an introduction to the properties, uses, preparation methods, and safety information of adipic anhydride:
Nature:
-Appearance: Adipic anhydride is a white odorless crystal, often in the form of flakes or scales.
-Solubility: Adipic anhydride is soluble in organic solvents such as ether and benzene, but insoluble in water.
-Melting point: approximately 60-64 ℃.
-Chemical properties: Adipic anhydride is relatively stable at room temperature. It is an anhydride that can react with alcohols and amines, and can undergo esterification and acylation reactions.
Usage:
-Adipic anhydride is an important organic synthesis intermediate widely used in the preparation of polyester resins, plastics, coatings, solvents, softeners, and other products.
-It is widely used in fields such as paint industry, plastic industry, fiber industry, etc.
Method:
-The traditional method of preparing adipic anhydride is achieved by reacting adipic acid with anhydrous acetic acid. The reaction is usually carried out under the catalysis of a dehydrating agent.
-In recent years, some new green preparation methods have also been developed, such as microwave assisted synthesis, catalyst assisted synthesis, etc., to improve yield and reduce production costs.
Security information:
-Adipic anhydride is irritating to the skin and eyes, and may cause allergic reactions. During operation, appropriate personal protective equipment such as gloves, goggles, and protective clothing should be worn.
-After contact with succinic anhydride, immediately rinse the affected skin or eyes with plenty of water and seek medical advice.