Magnesium thiosulfate hexahydrate CAS 10124-53-5 powder

3,3′,4,4′-Benzophenonetetracarboxylic dianhydride CAS 2421-28-5

CAS:2421-28-5
Molecular Formula:C17H6O7
Molecular Weight:322.23
EINECS:219-348-1

Synonyms:3,3′,4,4′-Benzophenonetetracarboxylic acid dianhydride; 3,3′,4,4′-Tetracarboxybenzophenone dianhydride; 3,3’,4,4’-benzophenonetetracarboxylicaciddianhydride; BENZOPHENONETETRACARBOXYLIC ACID DIANHYDRIDE; BENZOPHENONE-TETRACARBOXYLIC-DIANHYDRIDE; BTDA~4,4-Carbonyldiphthalic anhydride

What is 3,3′,4,4′-Benzophenonetetracarboxylic dianhydride CAS 2421-28-5？

3,3 ‘, 4,4’ – Benzophenonetetracarboxylic dianhydride is a brownish crystalline powder. The melting point of this substance is 218.67 ° C, and it decomposes at 360 ° C. The spontaneous combustion temperature is very high, and no flammability was observed. The density of the substance is 1.5452g/ml, and the vapor pressure is 6.53E-011Pa.

Specification

Item	Specification
Boiling point	320°C 5mm
Density	1,57 g/cm3
Melting point	218-222 °C (lit.)
flash point	324 °C
resistivity	1.6380 (estimate)
Storage conditions	Inert atmosphere,Room Temperature

Application

BTDA is used as an intermediate in the manufacturing of plastic products or fine chemicals in the industrial sector. Polymer monomer, used for synthesizing high-temperature resistant polymer materials.