4,5-DIFLUOROPHTHALIC ANHYDRIDE

Synonym(s):4,5-Difluorophthalic anhydride

CAS NO.：18959-30-3
Empirical Formula: C8H2F2O3
Molecular Weight: 184.1
MDL number: MFCD08695033
EINECS: 808-095-8
SAFETY DATA SHEET (SDS)
Update Date: 2025-07-14 15:27:00

4,5-DIFLUOROPHTHALIC ANHYDRIDE Structural

What is 4,5-DIFLUOROPHTHALIC ANHYDRIDE?

The Uses of 4,5-DIFLUOROPHTHALIC ANHYDRIDE

4,5-Difluorophthalic anhydride is a cyclo-anhydride compound with a wide range of applications in a variety of fields including chemicals, plastics, agrochemicals and pharmaceuticals. It can be reacted chemically with several nucleophiles, including thiocarbamoyl hydrazide and different amines, to produce carboxylic acid derivatives arising from anhydride open-circuit, i.e., phthalimide and dicarboxylic acid products.

General Description

4,5-Difluorophthalic anhydride (CPA) is located on the twofold axis of the space group C2/c; the molecules are stacked in a two-dimensional sheet. It has a similar two-dimensional molecular sheet as 5,6-dichlorobenzfurazan 1-oxide (CBF), 4,5-dibromophthalic anhydride. The disordered CBF molecule is pseudoisomeric with the CPA molecule.

Properties of 4,5-DIFLUOROPHTHALIC ANHYDRIDE

Melting point:	99-100℃
Boiling point:	321.2±32.0 °C(Predicted)
Density	1.658
storage temp.	Store below +30°C.
color	Gray
CAS DataBase Reference	18959-30-3(CAS DataBase Reference)

Safety information for 4,5-DIFLUOROPHTHALIC ANHYDRIDE

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection.