4-Fluorophthalic anhydride
Also known as: 5-Fluoro-1,3-isobenzofurandione, 4-Fluorobenzene-1,2-dicarboxylic anhydride, 4-Fluorophthalic acid anhydride, 5-Fluoroisobenzofuran-1,3-dione, 4-FPA, 1,3-Isobenzofurandione, 5-fluoro-
4-Fluorophthalic anhydride (CAS 319-03-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H3FO3 and a molecular weight of 166.11 g/mol. Key properties include a melting point of 75-79 °C(lit.), a boiling point of 304.1±25.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 133.3±18.1 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 319-03-9
- Jingsj CID
- J-14805-0
- Molecular Formula
- C8H3FO3
- Molecular Weight
- 166.11 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 75-79 °C(lit.) |
|---|---|
| Boiling Point | 304.1±25.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 133.3±18.1 °C |
| Exact Mass | 166.006622 |
| PSA | 43.37000 |
| LogP | 1.65 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.583 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Fluorophthalic anhydride?
The CAS number of 4-Fluorophthalic anhydride is 319-03-9.
What are the molecular formula and molecular weight of 4-Fluorophthalic anhydride?
4-Fluorophthalic anhydride has molecular formula C8H3FO3 and molecular weight 166.11 g/mol.
Is 4-Fluorophthalic anhydride hazardous?
4-Fluorophthalic anhydride has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 4-Fluorophthalic anhydride?
For 4-Fluorophthalic anhydride, Upstream Products: 4-Nitrophthalic anhydride, 4-Chlorophthalic anhydride, 4-Fluorophthalic acid; Downstream Products: 4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride, 5-Fluoro-2,3-dihydro-1H-isoindole, 4,4'-Oxydiphthalic anhydride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Fluorophthalic anhydride (CAS 319-03-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14805-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.