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2421-28-5

Basic Information
CAS No.: 2421-28-5
Name: 1,3-Isobenzofurandione,5,5'-carbonylbis-
Molecular Structure:
Molecular Structure of 2421-28-5 (1,3-Isobenzofurandione,5,5'-carbonylbis-)
Formula: C17H6O7
Molecular Weight: 322.23
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;
EINECS: 219-348-1
Density: 1.662 g/cm3
Melting Point: 218-222 °C(lit.)
Boiling Point: 638.8 °C at 760 mmHg
Flash Point: 286.1 °C
Solubility: Reacts with water
Appearance: white crystal powder
Hazard Symbols: IrritantXi
Risk Codes: 36/37
Safety: 25
Transport Information:
PSA: 103.81000
LogP: 1.53880
Raw Materials
2479-49-4
Downstream Products
2479-49-4
13676-54-5
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  • 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride

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  • 3,3',4,4'-Benzophenonetetracarboxylic dianhydride 2421-28-5CAS NO.: 2421-28-5

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    3,3',4,4'-Benzophenonetetracarboxylic dianhydride 2421-28-5CAS NO.: 2421-28-5

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  • 3,3',4,4'-Benzophenonetetracarboxylic dianhydride

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    2421-28-5

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

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Chemistry

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

Safety Profile

Hazard Codes: IrritantXi
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

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- .