3,6-Difluorophthalic anhydride

3,6-二氟邻苯二甲酸酐

Also known as: 4,7-difluoroisobenzofuran-1,3-dione, 1,3-Isobenzofurandione, 4,7-difluoro-, 4,7-Difluoro-1,3-isobenzofurandione, 5,8-Difluoro-1,3-Isobenzofurandione, 3,6-Difluoro-1,2-benzenedicarboxylic acid anhydride, 3,6-Difluorophthalic Anhydride, 4,7-Difluoro-2-benzofuran-1,3-dione, 4,7-difluoro-1,3-dihydro-2-benzofuran-1,3-dione

CAS No.
652-40-4
Jingsj CID
J-1420241-4
Molecular Formula
C8H2F2O3
Chinese Name
3,6-二氟邻苯二甲酸酐
Molecular Weight
184.096 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point218-221 °C(lit.)
Boiling Point315.7±32.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point140.1±20.0 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 3,6-Difluorophthalic anhydride?

652-40-4

What are the molecular formula and molecular weight of 3,6-Difluorophthalic anhydride?

C8H2F2O3, molecular weight 184.096 g/mol

Is 3,6-Difluorophthalic anhydride hazardous?

Warning

Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026