26177-82-2

Basic information

• Product Name: 5,5'-((1,1'-Biphenyl)-4,4'-diylbis(oxy))bis-1,3-isobenzofurandione
• Synonyms: 5,5'-((1,1'-Biphenyl)-4,4'-diylbis(oxy))bis-1,3-isobenzofurandione
• CAS NO: 26177-82-2
• Molecular Formula: C28H14 O8
• Molecular Weight: 478.406
• Mol File: 26177-82-2.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 708.5°Cat760mmHg
• Flash Point: 304.5°C
• Appearance: /
• Density: 1.485g/cm³
• CAS DataBase Reference: 5,5'-((1,1'-Biphenyl)-4,4'-diylbis(oxy))bis-1,3-isobenzofurandione(CAS DataBase Reference)
• NIST Chemistry Reference: 5,5'-((1,1'-Biphenyl)-4,4'-diylbis(oxy))bis-1,3-isobenzofurandione(26177-82-2)
• EPA Substance Registry System: 5,5'-((1,1'-Biphenyl)-4,4'-diylbis(oxy))bis-1,3-isobenzofurandione(26177-82-2)

Safety Data

• Hazardous Substances Data: 26177-82-2(Hazardous Substances Data)

Upstream product

• 41663-84-7 4-nitro-N-methyl-phthalimide 
• 26177-81-1 4,4'-(4,4'-Biphenylylendioxy)-diphthalsaeure 
• 63227-28-1 C₃₀H₂₀N₂O₆ 
• 92-88-6 4,4'-Dihydroxybiphenyl 

Relevant articles and documents

METHODS OF MANUFACTURE OF DIANHYDRIDES

A method of making dianhydride includes contacting a N-Substituted diimide with a carboxylic acid and substituted or unsubstituted dimethyl sulfoxide in an aqueous medium to provide a reaction mixture including tetra acid, triacid, imide diacid and diimide along with substituted or unsubstituted acetic acid, dimethyl sulfoxide and their derivatives. The method includes the isolation of tetra acid by precipitation in water followed by centrifuge or filtration. The tetra acid is converted into the corresponding dianhydride. The dianhydride prepared by the method are also described as precursor to make polyetherimide.