2,2-Difluorosuccinic acid
Also known as: 2,2-Difluoro-succinic acid, 2,2-Difluorobutane-1,4-dioic acid, 2,2-Difluorosuccinic acid 97%, Butanedioic acid, 2,2-difluoro-, MFCD00040970, EINECS 211-558-1
2,2-Difluorosuccinic acid (CAS 665-31-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H4F2O4 and a molecular weight of 154.069 g/mol. Key properties include a melting point of 144-145°C, a boiling point of 227.5±35.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 91.4±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 665-31-6
- Jingsj CID
- J-34277-8
- Molecular Formula
- C4H4F2O4
- Molecular Weight
- 154.069 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 144-145°C |
|---|---|
| Boiling Point | 227.5±35.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 91.4±25.9 °C |
| Exact Mass | 154.007767 |
| PSA | 74.60000 |
| LogP | 0.90 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.420 |
Customs & Trade Information
| HS Code | 2917190090 |
|---|---|
| Summary | 2917190090 acyclic polycarboxylic 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 2,2-Difluorosuccinic acid?
The CAS number of 2,2-Difluorosuccinic acid is 665-31-6.
What are the molecular formula and molecular weight of 2,2-Difluorosuccinic acid?
2,2-Difluorosuccinic acid has molecular formula C4H4F2O4 and molecular weight 154.069 g/mol.
What are the upstream and downstream products of 2,2-Difluorosuccinic acid?
For 2,2-Difluorosuccinic acid, Upstream Products: 1-Chloro-2,3,3-trifluorocyclobutene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,2-Difluorosuccinic acid (CAS 665-31-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34277-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.