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CAS: 2421-28-5
Molecular Formula: C17H6O7
Molecular Weight: 322.23
EINECS: 219-348-1
HS Code: 29183000
Synonyms: 1,3-Isobenzofurandione,5,5′-carbonylbis-; 3,3′,4,4′-Benzophenonetetracarboxylicaciddianhydride; 3,3′,4,4′-Tetracarboxybenzophenonedianhydride; 3,3’,4,4’-benzophenonetetracarboxylicaciddianhydride; BENZOPHENONETETRACARBOXYLICACIDDIANHYDRIDE; BENZOPHENONE-TETRACARBOXYLIC-DIANHYDRIDE; BTDA~4,4-Carbonyldiphthalicanhydride; 3,3′,4,4′-BENZOPHENONETETRACARBOXYLICDIANHYDRIDE,SUBLIMED,98%
BTDA CAS 2421-28-5 functions as a critical reactive dianhydride intermediate and co-monomer in polyimide synthesis, as well as a curing agent and cross-linker in various polymer systems, enabling the creation of advanced materials for electronics, aerospace, and specialty coatings.
| Property | Value |
| Appearance | tan-colored crystalline powder |
| Melting Point | 218-222 °C (lit.) |
| Boiling Point | 320°C 5mm |
| Density | 1,57 g/cm3 |
| Fp | 324 °C |
| Storage Conditions | Inert atmosphere, Room Temperature |
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Our R&D laboratory, staffed by experienced chemists and engineers, drives continuous innovation— developing high-performance chemical solutions tailored to diverse industries. From raw material analysis to final product inspection, we maintain full traceability and consistency.
Founded in 2020, Mikem Chemical Group Co., Ltd. is a trusted global partner in the chemical supply chain, offering a wide range of inorganic and organic compounds, cleaning agents, pigments, additives, and APIs. With over 300 employees and a 20,000 m² facility integrating production, R&D, testing, and storage, Mikem delivers reliable products and tailored solutions that create lasting value for customers worldwide.
At Mikem Chemical Group, our commitment lies in providing dependable goods and customized approaches, fostering enduring benefits for clients across the globe.
At Mikem, our advanced factory and laboratory form the foundation of our chemical production excellence. Equipped with modern manufacturing lines and precision testing instruments, we ensure every product meets strict international standards for quality, safety, and performance.
Our R&D laboratory, staffed by experienced chemists and engineers, drives continuous innovation— developing high-performance chemical solutions tailored to diverse industries. From raw material analysis to final product inspection, we maintain full traceability and consistency.
