3,3',4,4'-Biphthalic Anhydride(BPDA)

3,3',4,4'-Biphthalic Anhydride(BPDA)
Chemical Name: 3,3',4,4'-Biphthalic Anhydride
Other Name: BPDA
Molecular formula : C16H6O6
Molecular weight :294.22
CAS :2420-87-3
EINECS: 219-342-9
Appearance: : White powder
Application of 3,3',4,4'-Biphthalic Anhydride
1. In the production of polyimide products and their composites, pharmaceutical intermediates.
2. It is used to manufacture new polymer materials such as resin and PI film.
Packing: Inner packing is vacuum package with aluminum film bag;outer packing is carton or fiber can,or order by customer.
Storage: Keep in dark place,Inert atmosphere,Room temperature
Quality standard
Items  | Quality standard  | 
Appearance  | White powder  | 
Purity(HPLC)  | ≥99.5%  | 
Melting point  | ≥298℃  | 
Heavy Metal  | <1ppm  |