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Name	3,3',4,4'-Benzophenonetetracarboxylic dianhydride	EINECS	219-348-1
CAS No.	2421-28-5	Density	1.662 g/cm³
PSA	103.81000	LogP	1.53880
Solubility	Reacts with water	Melting Point	218-222 °C(lit.)
Formula	C₁₇H₆O₇	Boiling Point	638.8 °C at 760 mmHg
Molecular Weight	322.23	Flash Point	286.1 °C
Transport Information	N/A	Appearance	white crystal powder
Safety	25	Risk Codes	36/37
Molecular Structure		Hazard Symbols	Xi
Synonyms	Phthalicanhydride, 4,4'-carbonyldi- (8CI);3,3',4,4'-Benzophenonetetracarboxylic aciddianhydride;3,3',4,4'-Benzophenonetetracarboxylic acid-KF 8010 copolymer;3,3',4,4'-Tetracarboxybenzophenone dianhydride;3,4,3',4'-Benzophenonetetracarboxylic acid anhydride;3,4,3',4'-Benzophenonetetracarboxylic dianhydride;4,4'-Carbonylbis(phthalicanhydride);4,4'-Carbonyldiphthalic anhydride;5,5'-Carbonylbis[1,3-isobenzofurandione];BTDA;Benzophenone-3,3',4,4'-tetracarboxylic acid anhydride;Benzophenonetetracarboxylic acid dianhydride;Benzophenonetetracarboxylicdianhydride;NSC 78480;	Article Data	13

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Synthetic route

: 2479-49-4
3,3',4,4'-benzophenonetetracarboxylic acid

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

Conditions

Conditions	Yield
With 2,6-bis[(2,2,6,6-tetramethylpiperidin-1-yl)methyl]phenylboronic acid In propyl cyanide for 12h; Reflux;	98%
at 225℃; for 2h; Industrial scale;	73.56%
In diphenylether at 230℃; for 2h; Dean-Stark; Heating;	70%

: 95-47-6
o-xylene

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: 3 h / 0 - 2 °C / Inert atmosphere; Industrial scale 1.2: 7 h / 0 - 40 °C / Inert atmosphere; Industrial scale 2.1: potassium permanganate; hydrogenchloride / water / 3 h / 80 °C / Industrial scale 3.1: 2 h / 225 °C / Industrial scale View Scheme
Multi-step reaction with 4 steps 1: aluminum (III) chloride / 0 - 5 °C 2: sodium hydroxide / water / 1 h / Heating 3: potassium permanganate; water / pyridine / 85 °C 4: diphenylether / 2 h / 230 °C / Dean-Stark; Heating View Scheme

: 3,3',4,4'-tetramethyldiphenyldichloromethane

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: sodium hydroxide / water / 1 h / Heating 2: potassium permanganate; water / pyridine / 85 °C 3: diphenylether / 2 h / 230 °C / Dean-Stark; Heating View Scheme

: 107-15-3
ethylenediamine

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

: ethane-1,2-diammonium dihydrogen 3,3',4,4'-benzophenonetetracarboxylate

Conditions

Conditions	Yield
In water	100%

: 1477-55-0
1,3-di(aminomethyl)benzene

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

: 1,3-benzenedimethaneammonium dihydrogen 3,3',4,4'-benzophenonetetracarboxylate

Conditions

Conditions	Yield
In water for 0.5h;	100%

: 118-31-0
(naphth-1-yl)methylamine

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

: 4,4'-carbonylbis(2-(naphthalen-1-ylmethylcarbamoyl)benzoic acid)

Conditions

Conditions	Yield
With triethylamine In tetrahydrofuran at 0℃; for 3h;	99%

: 916066-54-1
3,3'-bis(N-aminophthalimide)

: 101-80-4
4,4'-oxydiphenylene diamine

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

polymer, Mn/Mw = 1.6, Mn = 51210 g/mol, Mw = 82240 g/mol, inherent viscosity = 0.50 dL/g; monomer(s): 3,3\-bis(N-aminophthalimide); 4,4\-oxydianiline; 3,3\44,4\-biphenyltetracarboxylic acid dianhydride: polymer, Mn/Mw = 1.6, Mn = 51210 g/mol, Mw = 82240 g/mol, inherent viscosity = 0.50 dL/g; monomer(s): 3,3\-bis(N-aminophthalimide); 4,4\-oxydianiline; 3,3\44,4\-biphenyltetracarboxylic acid dianhydride

Conditions

Conditions	Yield
With 4-chloro-phenol; benzoic acid at 100 - 190℃;	98%

: 439385-19-0
[(m-aminophenylamino)-4-aminophenylmethylidene]propanedinitrile

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

polyimide; monomer(s): [(m-aminophenylamino)-4-aminophenylmethylidene]propanedinitrile; 3,3',4,4'-benzophenone tetracarboxylic dianhydride: polyimide; monomer(s): [(m-aminophenylamino)-4-aminophenylmethylidene]propanedinitrile; 3,3',4,4'-benzophenone tetracarboxylic dianhydride

Conditions

Conditions	Yield
In 1-methyl-pyrrolidin-2-one; chlorobenzene at 20 - 190℃; for 20h;	98%

: 134-32-7
1-amino-naphthalene

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

: 4,4'-carbonylbis(2-(naphthalen-1-ylcarbamoyl)benzoic acid)

Conditions

Conditions	Yield
With triethylamine In tetrahydrofuran at 0℃; for 3h;	98%

: 999-97-3
1,1,1,3,3,3-hexamethyl-disilazane

: 2421-28-5
dianhydride of benzophenone-3,4,3',4'-tetracarboxy acid

: C23H24N2O5Si2

Conditions

Conditions	Yield
at 130 - 140℃;	97%

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Chemical Properties

The Molecular Structure of 1,3-Isobenzofurandione, 5,5'-carbonylbis- (CAS NO.2421-28-5):

Empirical Formula: C₁₇H₆O₇
Molecular Weight: 322.2253
IUPAC: 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione
Product Categories: pharmacetical;Aromatic Tetracarboxylic Dianhydrides (for High-Performance Polymer Research);Benzophenones (for High-Performance Polymer Research);Functional Materials;Reagent for High-Performance Polymer Research
Appearance: white crystall powder
Nominal Mass: 322 Da
Average Mass: 322.2253 Da
Monoisotopic Mass: 322.011353 Da
Index of Refraction: 1.699
Molar Refractivity: 74.9 cm³
Molar Volume: 193.8 cm³
Surface Tension: 79.2 dyne/cm
Density: 1.662 g/cm³
Flash Point: 286.1 °C
Enthalpy of Vaporization: 94.33 kJ/mol
Boiling Point: 638.8 °C at 760 mmHg
Vapour Pressure: 3.25E-16 mmHg at 25°C
Water Solubility: REACTS
Sensitive Moisture: Sensitive
Sublimation: 220-230 ºC
InChI
InChI=1/C17H6O7/c18-13(7-1-3-9-11(5-7)16(21)23-14(9)19)8-2-4-10-12(6-8)17(22)24-15(10)20/h1-6H
Smiles
O=C1OC(=O)c2ccc(C(=O)c3ccc4c(C(=O)OC4=O)c3)cc12

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Safety Profile

Hazard Codes: Irritant Xi
Risk Statements: 36/37
R36/37: Irritating to eyes and respiratory system
Safety Statements: 25
S25: Avoid contact with eyes
WGK Germany: 1
F 21: Sensitive to humidity
HS Code: 29183000

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Specification

1,3-Isobenzofurandione, 5,5'-carbonylbis- (CAS NO.2421-28-5) is also called as Benzophenonetetracarboxylic acid dianhydride ; 3,3',4,4'-Benzophenonetetracarboxylic acid dianhydride ; 3,3',4,4'-Benzophenonetetracarboxylic dianhydride ; 3,3',4,4'-Tetracarboxybenzophenone dianhydride ; 4,4'-Carbonylbis(phthalic anhydride) ; 4,4'-Carbonyldiphthalic anhydride ; 4,4'-Diphthalic anhydride ketone ; Benzophenonetetracarboxylic acid anhydride ; Benzophenonetetracarboxylic acid dianhydride ; Benzophenonetetracarboxylic anhydride ; Benzophenonetetracarboxylic dianhydride ; EINECS 219-348-1 ; NSC 78480 ; Benzophenone-3,3':4,4'-tetracarboxylic dianhydride ; Phthalic anhydride, 4,4'-carbonyldi- (8CI) ; Phthalic anhydride, 4,4'-carbonyldi- .

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