Description

Perfluorobutyric Acid (PFBA) is a high-purity fluorinated organic compound with the molecular formula C₄HF₇O₂, also known as 2,2,3,3,4,4,4-heptafluorobutanoic acid. This perfluorinated carboxylic acid is characterized by its strong acidity, thermal stability, and hydrophobic properties due to its fully fluorinated alkyl chain. It is widely utilized in analytical chemistry, pharmaceuticals, and material science as a derivatization agent, ion-pairing reagent, or catalyst. Available in liquid form with a purity of ≥98%, it is packaged under inert conditions to ensure stability. Suitable for LC-MS applications, organic synthesis, and surface modification, Perfluorobutyric Acid is an essential reagent for researchers requiring precise fluorinated building blocks.

Properties

• CAS Number: 375-22-4
• Complexity: 217
• IUPAC Name: 2,2,3,3,4,4,4-heptafluorobutanoic acid
• InChI: InChI=1S/C4HF7O2/c5-2(6,1(12)13)3(7,8)4(9,10)11/h(H,12,13)
• InChI Key: YPJUNDFVDDCYIH-UHFFFAOYSA-N
• Exact Mass: 213.98647640
• Molecular Formula: C4HF7O2
• Molecular Weight: 214.04
• SMILES: C(=O)(C(C(C(F)(F)F)(F)F)(F)F)O
• Topological: 37.3
• Monoisotopic Mass: 213.98647640
• Physical Description: Colorless liquid with an unpleasant odor;
• Synonyms: Heptafluorobutyric acid, 375-22-4, Perfluorobutyric acid, Perfluorobutanoic acid, Heptafluorobutanoic acid, Butanoic acid, heptafluoro-, Heptafluoro-1-butanoic acid, Perfluoropropanecarboxylic acid, 2,2,3,3,4,4,4-Heptafluorobutanoic acid, BUTYRIC ACID, HEPTAFLUORO-, Kyselina heptafluormaselna, NSC 820, Butanoic acid, 2,2,3,3,4,4,4-heptafluoro-, Kyselina heptafluormaselna [Czech], EINECS 206-786-3, BRN 1426882, 12VHZ8L29I, perfluorobutyrate, DTXSID4059916, CHEBI:39426, NSC-820, FLUORAD FC 23, 4-02-00-00810 (Beilstein Handbook Reference), H-0024, heptafluorobutanoatato, PFBA perfluorobutanoic acid, silver(1+) heptafluorobutanoate, Heptafluoro1butanoic acid, Butyric acid, heptafluoro, Butanoic acid, heptafluoro, DTXCID1039343, Butanoic acid, 2,2,3,3,4,4,4heptafluoro, 206-786-3, PFBA, Perfluoro-n-butanoic acid, heptafluoro-butyric acid, WLN: QVXFFXFFXFFF, Heptafluoro-n-butyric acid, IPC-PFFA-4, Heptafluorobutyric acidHFBA, UNII-12VHZ8L29I, SCHEMBL37922, Heptafluorobutyric acid, 98%, SCHEMBL865497, CHEMBL367680, NSC820, YPJUNDFVDDCYIH-UHFFFAOYSA-, MSK9514, DMSIAJLWJLMCBR-UHFFFAOYSA-N, FC-23, CS-B0896, STR03803, MFCD00004171, SBB008777, STL280430, AKOS000121488, FH05926, Heptafluorobutyric acid, >=99.0% (GC), 2,2,3,3,4,4,4-Heptafluoro-Butyric Acid, A5713, H0024, NS00000364, Q0054, 2,2,3,3,4,4,4-Heptafluorobutanoic acid #, EN300-21059, H11278, Q5732020, Perfluorobutanoic acid 100 microg/mL in Acetonitrile, F1980-0014, Z104487404, Heptafluorobutyric acid, for ion chromatography, >=99.5% (GC), InChI=1/C4HF7O2/c5-2(6,1(12)13)3(7,8)4(9,10)11/h(H,12,13)

Application

Perfluorobutyric Acid (PFBA) is commonly employed as a volatile ion-pairing agent in reverse-phase liquid chromatography (LC-MS) to enhance the separation of polar compounds. It serves as a key intermediate in the synthesis of fluorinated pharmaceuticals and agrochemicals due to its strong electron-withdrawing properties. Additionally, PFBA is used in surface treatment applications to impart hydrophobicity and chemical resistance to materials.

Safety and Hazards

GHS Hazard Statements

• H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]

Precautionary Statements

• P264+P265, P280, P305+P354+P338, and P317

Hazard Classes and Categories

• Skin Corr. 1A (99.4%)
• Eye Dam. 1 (70.8%)

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