4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride

Synonym(s):4,4′-(4,4′-Isopropylidenediphenoxy)bisphthalic dianhydride;4,4′-(4,4′-Isopropylidenediphenoxy)diphthalic dianhydride;4,4′-[4,4′-Isopropylidenedi(p -phenyleneoxy)]bis(phthalic anhydride);4,4′-Bisphenol A diphthalic anhydride;Bisphenol A dianhydride

CAS NO.：38103-06-9
Empirical Formula: C31H20O8
Molecular Weight: 520.49
MDL number: MFCD00319167
EINECS: 253-781-7
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 01:02:59

4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride Structural

What is 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride?

Description

4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride (BPADA) is a diphthalic anhydride structural unit with a core of bisphenol A. BPADA is a precursor for the synthesis of polyimides, which are highly thermally stable and have strong mechanical properties using their bisphenol A core. Polyimide films synthesised from this molecule are incompletely conjugated and therefore have high optical transparency. With their isometric stretchability and high glass transition temperature (Tg = 207 °C), these films are ideal for flexible display substrates. In addition to their high heat resistance, the polyimides are chemically inert and can be used as ion transport membranes in fuel cells.BPADA can also be used to make aerogels that are superhydrophobic (Lotus effect).

The Uses of 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride

4,4'-(4,4'-Isopropylidenediphenoxy)bis(phthalic anhydride) be used for the preparation of a polyimide material.

Preparation

4,4'-(4,4'-isopropylidenediphenoxy)bis(phthalic anhydride) can be synthesized from 4-chlorophthalic anhydride and bisphenol A. Mainly includes the following steps:(1) Chlorophenyl anhydride imide, synthesis of N-Phenyltetrachlorophthalimide;(2) the synthesis of bisphenol A disodium salt;(3) Nucleophilic substitution reaction in dipolar nonproton solvent;(4) hydrolysis to bisphenol A diether tetraic acid;(5) dehydration to 4,4'-(4,4'-isopropylidenediphenoxy)bis(phthalic anhydride).

Flammability and Explosibility

Not classified

Properties of 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride

Melting point:	184-187 °C(lit.)
Boiling point:	712.3±60.0 °C(Predicted)
Density	1.406±0.06 g/cm3(Predicted)
vapor pressure	0Pa at 25℃
storage temp.	Inert atmosphere,Room Temperature
form	powder to crystal
color	White to Light yellow
Sensitive	Moisture Sensitive
EPA Substance Registry System	1,3-Isobenzofurandione, 5,5'-[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis- (38103-06-9)

Safety information for 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection.