2,5-Difluorobenzoic acid
Also known as: 2,5-Difluorobenzic acid, 2,5-difluoro-benzoic acid, Benzoic acid, 2,5-difluoro-, EINECS 221-060-6, MFCD00002410, QVR BF EF, RARECHEM AL BO 0019
2,5-Difluorobenzoic acid (CAS 2991-28-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4F2O2 and a molecular weight of 158.102 g/mol. Key properties include a melting point of 132-134 °C(lit.), a boiling point of 244.7±20.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 101.8±21.8 °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.
- 2991-28-8
- Jingsj CID
- J-36355-3
- Molecular Formula
- C7H4F2O2
- Molecular Weight
- 158.102 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 132-134 °C(lit.) |
|---|---|
| Boiling Point | 244.7±20.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 101.8±21.8 °C |
| Exact Mass | 158.017929 |
| PSA | 37.30000 |
| LogP | 2.19 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.513 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2916399090 |
|---|---|
| Summary | 2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2,5-Difluorobenzoic acid?
The CAS number of 2,5-Difluorobenzoic acid is 2991-28-8.
What are the molecular formula and molecular weight of 2,5-Difluorobenzoic acid?
2,5-Difluorobenzoic acid has molecular formula C7H4F2O2 and molecular weight 158.102 g/mol.
Is 2,5-Difluorobenzoic acid hazardous?
2,5-Difluorobenzoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2,5-Difluorobenzoic acid?
For 2,5-Difluorobenzoic acid, Upstream Products: 1,2,3,5-Tetrafluorobenzene, 1,2,4-Trifluorobenzene, 2,3,6-Trifluorobenzoic acid; Downstream Products: 3-Fluorobenzoic acid, benzoic acid, 2,5-Difluorobenzoyl chloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,5-Difluorobenzoic acid (CAS 2991-28-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36355-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.