3,6-Difluorophthalic anhydride
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
3,6-Difluorophthalic anhydride (CAS 652-40-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H2F2O3 and a molecular weight of 184.096 g/mol. Key properties include a melting point of 218-221 °C(lit.), a boiling point of 315.7±32.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 140.1±20.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 652-40-4
- Jingsj CID
- J-1420241-6
- Molecular Formula
- C8H2F2O3
- Molecular Weight
- 184.096 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 218-221 °C(lit.) |
|---|---|
| Boiling Point | 315.7±32.0 °C at 760 mmHg |
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 140.1±20.0 °C |
| Exact Mass | 183.997192 |
| PSA | 43.37000 |
| LogP | 1.77 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.556 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of 3,6-Difluorophthalic anhydride?
The CAS number of 3,6-Difluorophthalic anhydride is 652-40-4.
What are the molecular formula and molecular weight of 3,6-Difluorophthalic anhydride?
3,6-Difluorophthalic anhydride has molecular formula C8H2F2O3 and molecular weight 184.096 g/mol.
Is 3,6-Difluorophthalic anhydride hazardous?
3,6-Difluorophthalic anhydride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,6-Difluorophthalic anhydride (CAS 652-40-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1420241-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.