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Atomfair 4,5-Difluorophthalic Acid C8H4F2O4 CAS 18959-31-4

4,5-Difluorophthalic Acid (CAS No. 18959-31-4) is a high-purity fluorinated aromatic dicarboxylic acid with the molecular formula C8H4F2O4. This compound is a valuable building block in organic synthesis, particularly for the preparation of advanced materials, pharmaceuticals, and agrochemicals. Its rigid aromatic core and electron-withdrawing fluorine substituents make it an ideal precursor for high-performance polymers, liquid crystals, and metal-organic frameworks (MOFs). Available in >98% purity (HPLC), this product is rigorously tested for consistency and suitability in sensitive applications. Packaged under inert gas to ensure stability, it is supplied as a white to off-white crystalline powder with excellent solubility in polar organic solvents…

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Description

4,5-Difluorophthalic Acid (CAS No. 18959-31-4) is a high-purity fluorinated aromatic dicarboxylic acid with the molecular formula C8H4F2O4. This compound is a valuable building block in organic synthesis, particularly for the preparation of advanced materials, pharmaceuticals, and agrochemicals. Its rigid aromatic core and electron-withdrawing fluorine substituents make it an ideal precursor for high-performance polymers, liquid crystals, and metal-organic frameworks (MOFs). Available in >98% purity (HPLC), this product is rigorously tested for consistency and suitability in sensitive applications. Packaged under inert gas to ensure stability, it is supplied as a white to off-white crystalline powder with excellent solubility in polar organic solvents like DMF and DMSO.

Properties

  • CAS Number: 18959-31-4
  • Complexity: 230
  • IUPAC Name: 4,5-difluorophthalic acid
  • InChI: InChI=1S/C8H4F2O4/c9-5-1-3(7(11)12)4(8(13)14)2-6(5)10/h1-2H,(H,11,12)(H,13,14)
  • InChI Key: FFSBOABNRUJQFW-UHFFFAOYSA-N
  • Exact Mass: 202.00776493
  • Molecular Formula: C8H4F2O4
  • Molecular Weight: 202.11
  • SMILES: C1=C(C(=CC(=C1F)F)C(=O)O)C(=O)O
  • Topological: 74.6
  • Monoisotopic Mass: 202.00776493
  • Synonyms: 4,5-difluorophthalic acid, 18959-31-4, 1,2-benzenedicarboxylic acid, 4,5-difluoro-, DTXSID80349161, DTXCID40300233, 889-179-1, inchi=1/c8h4f2o4/c9-5-1-3(7(11)12)4(8(13)14)2-6(5)10/h1-2h,(h,11,12)(h,13,14, 4,5-Difluorobenzene-1,2-dicarboxylic acid, MFCD00077514, 4,5-Difluorophthalicacid, 4.5-Difluorophthalic Acid, AE-641/01623037, SCHEMBL4830274, YSWG5203, FFSBOABNRUJQFW-UHFFFAOYSA-N, 4 pound not5-Difluorophthalic acid, SBB064350, AKOS000278395, AC-9810, CS-W019362, BS-13960, SY022919, DB-006587, DB-184251, EN300-31766, Z335437574

Application

4,5-Difluorophthalic Acid is widely used as a key intermediate in the synthesis of polyimide resins for high-temperature and dielectric applications. Its fluorinated structure enhances thermal stability and chemical resistance in specialty polymers. Researchers also employ it to develop fluorescent probes and optoelectronic materials due to its tunable electronic properties. In pharmaceutical chemistry, it serves as a precursor for active ingredients targeting metabolic disorders.

Safety and Hazards

GHS Hazard Statements

  • H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Precautionary Statements

  • P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, and P362+P364

Hazard Classes and Categories

  • Skin Irrit. 2 (100%)
  • Eye Irrit. 2 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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