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

$ 1.00 /1kg

career henan chemical co

7YR

China

Chemical Properties

Product Name	3,3',4,4'-Benzophenonetetracarboxylic dianhydride
CAS No	2421-28-5
EC-No
Min. Order	1kg
Purity	99%
Supply Ability	100KG
Release date	2019/07/06

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Basic information

Product Name:	3,3',4,4'-Benzophenonetetracarboxylic dianhydride
Synonyms:	1,3-Isobenzofurandione, 5,5'-carbonylbis-;3,3',4,4'-Benzophenonetetracarboxylic acid dianhydride;3,3',4,4'-Tetracarboxybenzophenone dianhydride;3,3’,4,4’-benzophenonetetracarboxylicaciddianhydride;3-Isobenzofurandione,5,5’-carbonylbis-1;4,4'-Carbonylbis[phthalic anhydride];4,4'-Diphthalic anhydride ketone;5,5’-carbonylbis-3-isobenzofurandione
CAS:	2421-28-5
MF:	C17H6O7
MW:	322.23
EINECS:	219-348-1
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;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, pharmaceutical intermediates;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, functional materials
Mol File:	2421-28-5.mol

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

Melting point	218-222 °C(lit.)
Boiling point	320°C 5mm
density	1,57 g/cm³
vapor density	1.4 (vs air)
vapor pressure	<0.1 mm Hg ( 0 °C)
refractive index	1.6380 (estimate)
Fp	324 °C
solubility	DMF: 0.1 g/mL, clear
form	Needles or Crystalline Powder
color	Off-white to brown
explosive limit	16%
Water Solubility	REACTS
Sensitive	Moisture Sensitive
λmax	580nm(CH3CN)(lit.)
Sublimation	220-230 ºC
BRN	761777
NIST Chemistry Reference	Bis-(3-phthalyl anhydride) ketone(2421-28-5)
EPA Substance Registry System	1,3-Isobenzofurandione, 5,5'-carbonylbis-(2421-28-5)

Safety Information

MSDS Information

3,3',4,4'-Benzophenonetetracarboxylic dianhydride Usage And Synthesis

Chemical Properties	white crystall powder
Uses	BTDA is important monomer of polyimide, and used for production of polyimide material. The material has high temperature resistance, low temperature resistance, corrosion resistance, radiation resistance, insulation, shock resistance, excellent performance. Can be made into structure parts, laminates, films, adhesives, coatings, insulation materials and reinforcing material, etc., can be widely used in the field of aerospace, electrical / electronics, shipbuilding, automobile, precision machinery.
Uses	Used in the synthesis of polyimides.
Purification Methods	The main impurity is the free acid formed by hydrolysis (check for OH bands in the IR). This can be converted to the dianhydride by treating with Ac2O (molar ratio of 4 to 1 of acid), heating at 110-120o for 1.5 to 2hours, cooling to 0—5o and collecting the dianhydride. This is then dissolved in hot dioxane or Me2CO, filtered and cooled to 10—15o. The moisture sensitive solid is collected and dried at 120—130o in vacuo. It has been sublimed at high vacuum. [Faberov et al. J Org Chem USSR 4 153 (English translation) 1968.]

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