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4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) structure

CAS No.: 38103-06-9

Chemical Name:: 4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)

Synonyms: BPADA;2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride;5,5'-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione);trione";BPADA 38103-06-9;ULTEM DIANHYDRIDE;4,4'-BISPHENOL A DIANHYDRIDE;Bisphenol A diether dianhydride;4,4'-(4,4'-isopropylidenediphenoxy)bi;4.4‘-Bisphenol A diphthalic anhydride

CBNumber:: CB3211771

Molecular Formula:: C31H20O8

Molecular Weight:: 520.49

MDL Number:: MFCD00319167

MOL File:: 38103-06-9.mol

MSDS File:: SDS

Last updated:2026-05-12 09:13:37

Product description	Number	Pack Size	Price
4,4′-(4,4′-Isopropylidenediphenoxy)bis(phthalic anhydride) 97%	478032	50g	$139
4,4′-(4,4′-Isopropylidenediphenoxy)bis(phthalic anhydride) 97%	478032	250g	$362
4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride >98.0%(HPLC)(T)	I0856	25g	$84
4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride >98.0%(HPLC)(T)	I0856	100g	$234
5,5'-((Propane-2,2-diylbis(4,1-phenylene))-bis(oxy))bis(isobenzofuran-1,3-dione)	093747	100.00g	$58
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4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) Properties

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
InChI	InChI=1S/C31H20O8/c1-31(2,17-3-7-19(8-4-17)36-21-11-13-23-25(15-21)29(34)38-27(23)32)18-5-9-20(10-6-18)37-22-12-14-24-26(16-22)30(35)39-28(24)33/h3-16H,1-2H3
InChIKey	MQAHXEQUBNDFGI-UHFFFAOYSA-N
SMILES	C(C1=CC=C(OC2C=CC3C(=O)OC(=O)C=3C=2)C=C1)(C1=CC=C(OC2C=CC3C(=O)OC(=O)C=3C=2)C=C1)(C)C
LogP	-2.22 at 21℃
FDA UNII	AX6B5HRE2H
EPA Substance Registry System	1,3-Isobenzofurandione, 5,5'-[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis- (38103-06-9)
UNSPSC Code	12162002
NACRES	NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H315-H319
Precautionary statements	P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
PPE	dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Hazard Codes	Xi
Risk Statements	36/37/38-42
Safety Statements	26-36
WGK Germany	3
RTECS	NP7227500
TSCA	TSCA listed
HS Code	29189900
Storage Class	13 - Non Combustible Solids
REACH Registrations	Active

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) price More Price(33)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	478032	4,4′-(4,4′-Isopropylidenediphenoxy)bis(phthalic anhydride) 97%	38103-06-9	50g	$139	2026-04-30	Buy
Sigma-Aldrich	478032	4,4′-(4,4′-Isopropylidenediphenoxy)bis(phthalic anhydride) 97%	38103-06-9	250g	$362	2026-04-30	Buy
TCI Chemical	I0856	4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride >98.0%(HPLC)(T)	38103-06-9	25g	$84	2026-04-30	Buy
TCI Chemical	I0856	4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride >98.0%(HPLC)(T)	38103-06-9	100g	$234	2026-04-30	Buy
Matrix Scientific	093747	5,5'-((Propane-2,2-diylbis(4,1-phenylene))-bis(oxy))bis(isobenzofuran-1,3-dione)	38103-06-9	100.00g	$58	2026-05-18	Buy

Product number	Packaging	Price	Buy
478032	50g	$139	Buy
478032	250g	$362	Buy
I0856	25g	$84	Buy
I0856	100g	$234	Buy
093747	100.00g	$58	Buy

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) Chemical Properties,Uses,Production

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).

Uses

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

Synthesis

80-05-7

118-45-6

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)

38103-06-9

The general procedure for synthesizing bisphenol A-type diethyl ether dianhydride from bisphenol A and 4-chlorophthalic anhydride is as follows: 79 g (0.63 mol) of 32 wt.% aqueous sodium hydroxide and 62.4 g (0.3 mol) of bisphenol A are added to a reactor, and stirred until completely dissolved. The reaction mixture was heated to 85°C, at which point the solution should appear clear. Subsequently, 510 g of trimethylbenzene was added as solvent and 4.2 g of benzyltriethylammonium chloride as catalyst. The reaction was started at room temperature, gradually warmed up to 172°C and continued stirring at this temperature for 15 hours. Upon completion of the reaction, the reaction mixture was cooled to 130 °C and 108 g (0.6 mol) of 4-chlorophthalic anhydride and 4.86 g of benzyltriethylammonium chloride catalyst were added. The reaction mixture was heated to 140°C to 145°C and kept at reflux for 5 hours. At the end of the reaction, it was filtered while hot and the filtrate was transferred to a crystallization kettle, cooled to room temperature and left to crystallize for 12 hours. After crystallization was completed, the precipitate was collected by filtration, washed with non-ionic water and filtered again. The precipitate was washed with 250 g of ethanol, stirred for 2 h and filtered to obtain 125 g of wet material. 120 g of bisphenol A diethyl ether dianhydride product was obtained after drying in 85% yield. The final product was in the form of white powder.

References

[1] Patent: CN108148029, 2018, A. Location in patent: Paragraph 0011; 0012; 0014

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) synthesis

Synthesis of 4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) from 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) Preparation Products And Raw materials

Raw materials

4-Chlorophthalic anhydride 5-Fluoro-1,3-isobenzofurandione disodium 4,4'-isopropylidenediphenolate 4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid Benzyltriethylammonium chloride

Sodium hydroxide Bisphenol A

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Preparation Products

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) Suppliers

Global( 327)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Chemport Science Technology Shanghai) Co., Ltd.	+undefined13816004845	chen@chemport-sh.com	China	188	58
Heynova (Shanghai) New Material Technology CO., Ltd	+86-17821102608	info@heynovachem.com	China	261	58
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.	+86-86-18222270857 +8618222270857	sales5@chinatechem.com	China	98	58
Sholon Chem-Tech Co.,Ltd	+86-15312550623; +8619901505185	amy.yang@sholonchem.com	China	216	58
Changzhou Mascot Import & Export Co., Ltd	+86-0519-85010339 +86-13584504415	info@mascot-ie.com	China	433	58
Eaglech（shanghai）Pharmaceutical Co., Ltd	+86-2160290089 +86-13884467586	eagpharm@gmail.com	China	116	58
Jiangsu Juming Chemical Technology Co., Ltd.	+8617798763151	admin@jumingchem.com	China	196	58
Shanghai Daken Advanced Materials Co.,Ltd	+86-2158073036	info@dakenam.com	China	13902	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20124	58
HANGZHOU HAILAN CHEMICAL CO.,LTD.	+86-57156122185 +86-15967590394	sales@hailan-chem.com	China	2957	58

Supplier	Advantage
Chemport Science Technology Shanghai) Co., Ltd.	58
Heynova (Shanghai) New Material Technology CO., Ltd	58
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.	58
Sholon Chem-Tech Co.,Ltd	58
Changzhou Mascot Import & Export Co., Ltd	58
Eaglech（shanghai）Pharmaceutical Co., Ltd	58
Jiangsu Juming Chemical Technology Co., Ltd.	58
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Fengda Chemical Co., Ltd	58
HANGZHOU HAILAN CHEMICAL CO.,LTD.	58

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Q:What is the cas number of 4,4'-(4,4' -isopropylidenediphenoxy)BIS(PHTHALIC ANHYDRIDE)?STAR - Oct 13，2025

A:4,4'-(4,4'-Isopropylidenediphenoxy)bis(phthalic anhydride) is a dianhydride compound featuring a bisphenol A core structure, CAS number 38103-06-9, molecular formula C₃₁H₂₀O₈, molecular weight 520.49, appearing as a white to pale yellow powder or crystalline substance. It is commonly employed as a monomer for high-performance polymers, particularly polyimides.

View Lastest Price from 4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-05-21	4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) 38103-06-9	US $0.00 / kg	1kg	99.5%min	2000KGS	HANGZHOU HAILAN CHEMICAL CO.,LTD.
2026-05-21	4,4'-(4,4'-Isopropylidenediphenoxy)bis(phthalic anhydride) 38103-06-9	US $0.00 / KG	1KG	≥99%	200mt/year	Jinan Finer Chemical Co., Ltd
2026-05-18	2,2-Bis[4-(3,4-dicarboxyphenoxy) phenyl]propanedianhydride (BPADA) 38103-06-9	US $0.00-0.00 / Kg	1Kg	≥99.5%	30TM	CHINATECH(TIANJIN) CHEMICAL CO.,LTD.

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)
38103-06-9
US $0.00 / kg
99.5%min
HANGZHOU HAILAN CHEMICAL CO.,LTD.

4,4'-(4,4'-Isopropylidenediphenoxy)bis(phthalic anhydride)
38103-06-9
US $0.00 / KG
≥99%
Jinan Finer Chemical Co., Ltd

2,2-Bis[4-(3,4-dicarboxyphenoxy) phenyl]propanedianhydride (BPADA)
38103-06-9
US $0.00-0.00 / Kg
≥99.5%
CHINATECH(TIANJIN) CHEMICAL CO.,LTD.

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5-Methoxy-isobenzofuran-1,3-dione 3-Phenoxybenzaldehyde 3-(4-METHYLPHENOXY)BENZOIC ACID

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ULTEM DIANHYDRIDE 4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) 4,4'-BISPHENOL A DIANHYDRIDE 5,5’-[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis-3-isobenzofurandione 4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic 4,4'-[(isopropylidene)bis(p-phenyleneoxy)]diphthalic dianhydride 5,5'-[(1-Methylethylidene)bis(4,1-phenyleneoxy)]bis-1,3-isobenzofurandione 5,5''-[(1-METHYLETHYLIDENE)BIS(4,1-PHENYLENEOXY)]BIS-1,3-ISOBENZOFURANDIONE(BPADA) 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride 5,5'-[(Propane-2,2-diyl)bis(p-phenyleneoxy)]bis(isobenzofuran-1,3-dione) 5,5'-[1-Methyl-1,1-ethanediylbis(1,4-phenylene)bisoxy]bis(isobenzofuran-1,3-dione) 5,5'-[2,2-Propanediylbis(p-phenyleneoxy)]bis(isobenzofuran-1,3-dione) 5,5'-[Isopropylidenebis(1,4-phenylene)bisoxy]bis(isobenzofuran-1,3-dione) 5,5'-[Isopropylidenebis[(4,1-phenylene)(oxy)]]bis(isobenzofuran-1,3-dione) 5,5'-[2,2-Propanediylbis(4,1-phenyleneoxy)]bis(2-benzofuran-1,3-dione) 1,3-Isobenzofurandione, 5,5'-[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis- 5,5'-[Propane-2,2-diylbis(4,1-phenyleneoxy)]bis(2-benzofuran-1,3-dione) 2,2-bis [4-(3,4dicarboxyphenoxy) phenyl] propane dianhydride(BPA 4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride) (BPADA) 5,5'-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(isobenzofuran-1,3-dione) isopropylidenediphenoxy)bis-(phthalic anhydride) (BPADA) 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride 2,2-bis [4-(3,4dicarboxyphenoxy) phenyl] propane dianhydride(BPADA) 5,5'-[propane-2,2-diylbis(benzene-4,1-diyloxy)]bis(2-benzofuran-1,3-dione) 4,4'-(4,4'-isopropylidenediphenoxy)bi dicarboxyphenoxy)phenyl]propanedianhydride(BPADA BPADA 38103-06-9 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride > Name: 4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride) 4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)(BPADA)CAS: 38103-06-9 2,2-bis(4-hydroxyphenyl)propane bis(phthalic anhydride) （BPADA）4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) 4.4‘-Bisphenol A diphthalic anhydride 4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic anhydride)(BPADA) Bisphenol A diether dianhydride Bisphenol A Type Diether Dianhydride (BPADA) (4, 4' -Isopropylidenediphenoxy) bis (phthalic anhydride) Bis(4-(3,4-dicarboxyphenoxy)phenyl)propanedianhydride Bisphenol A-type diethyl ether dianhydride trione" BPADA Bisphenol A-type diethyl ether dianhydride(BPADA) 38103-06-9 C31H20O8 strong recommend Anhydride Monomers Monomers Polymer Science 38103-06-9