Description

2,3,5,6-Tetrafluoroterephthalic acid (CAS No. 652-36-8) is a highly fluorinated aromatic dicarboxylic acid with the molecular formula C₈H₂F₄O₄. This compound is a versatile building block in organic synthesis and material science, known for its strong electron-withdrawing properties due to the presence of four fluorine atoms. It is widely used in the development of advanced polymers, liquid crystals, and coordination frameworks such as metal-organic frameworks (MOFs). With a purity of ≥97%, this high-quality reagent is ideal for research applications requiring precise fluorination and functionalization. Available in crystalline powder form, it is packaged under inert conditions to ensure stability and longevity.

Properties

• CAS Number: 652-36-8
• Complexity: 264
• IUPAC Name: 2,3,5,6-tetrafluoroterephthalic acid
• InChI: InChI=1S/C8H2F4O4/c9-3-1(7(13)14)4(10)6(12)2(5(3)11)8(15)16/h(H,13,14)(H,15,16)
• InChI Key: WFNRNCNCXRGUKN-UHFFFAOYSA-N
• Exact Mass: 237.98892119
• Molecular Formula: C8H2F4O4
• Molecular Weight: 238.09
• SMILES: C1(=C(C(=C(C(=C1F)F)C(=O)O)F)F)C(=O)O
• Topological: 74.6
• Monoisotopic Mass: 237.98892119
• Synonyms: 652-36-8, 2,3,5,6-Tetrafluoroterephthalic acid, 2,3,5,6-Tetrafluoro-1,4-benzenedicarboxylic acid, 1,4-Benzenedicarboxylic acid, 2,3,5,6-tetrafluoro-, M6NM6WEY2H, EINECS 211-489-7, NSC-96897, DTXSID40215510, NSC 96897, P-TETRAFLUOROBENZENEDICARBOXYLIC ACID, 2,3,5,6-TETRAFLUOROBENZENE-1,4-DIOIC ACID, DTXCID70138001, 211-489-7, Tetrafluoroterephthalic acid, Tetrafluorobenzene-1,4-dicarboxylic acid, 2,3,5,6-tetrafluorobenzene-1,4-dicarboxylic acid, MFCD00012301, 2,3,5,6-Tetrafluoro terephthalic acid, perfluoroterephthalic acid, UNII-M6NM6WEY2H, YSWG221, SCHEMBL141037, TETRAHYDROFURFURYLACETATE, Terephthalic acid, tetrafluoro-, Tefluthrin metabolite IV (diacid), Tetrafluoroterephthalic acid, 97%, NSC96897, 2,3,5,6-Tetrafluoroterephthalicacid, BBL101370, SBB064144, STL555166, 2.3.5.6-Tetrafluoroterephthalic acid, AKOS005258537, AS-17696, SY016217, DB-003782, CS-0043329, NS00042686, T0930, EN300-158945, F0001-4669, 2,3,5,6-Tetrafluoroterephthalic Acid; Tetrafluoro-1,4-benzenedicarboxylic Acid; 1,4-Benzenedicarboxylic acid, 2,3,5,6-tetrafluoro- (9CI, ACI); 2,3,5,6-Tetrafluoro-1,4-benzenedicarboxylic acid (ACI); Terephthalic acid, tetrafluoro- (6CI, 7CI, 8CI); 2,3,5,6-Tetrafluorobenzene-1,4-dicarboxylic a, InChI=1/C8H2F4O4/c9-3-1(7(13)14)4(10)6(12)2(5(3)11)8(15)16/h(H,13,14)(H,15,16

2,3,5,6-Tetrafluoroterephthalic acid is primarily used as a monomer in the synthesis of high-performance fluorinated polymers and copolymers. Its electron-deficient structure makes it valuable in the preparation of MOFs with tailored porosity for gas storage and separation. Researchers also employ it as a precursor for liquid crystalline materials and as a ligand in coordination chemistry. Its stability and reactivity under various conditions make it suitable for advanced material development.

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]
• H335 (97.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (97.6%)

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