Tetrabutylammonium Hydrogensulfate

• CAT Number: R051325
• CAS Number: 32503-27-8
• Molecular Formula: C16H37NO4S
• Molecular Weight: 339.54
• Purity: ≥95%
• Synonyms: N,N,N-Tributyl-1-butanaminium Sulfate; Tetrabutyl-ammonium Sulfate; Tetrabutylammonium Hydrogen Sulfate; TBAHS-MB; Tetra-n-butylammonium Hydrogen Sulfate; Tetrabutylammonium Bisulfate; Tetrabutylammonium Hydrosulfate
• Storage: 3 years -20C powder
• IUPAC Name: hydrogen sulfate;tetrabutylazanium
• InChI: InChI=1S/C16H36N.H2O4S/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-5(2,3)4/h5-16H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
• InChIKey: SHFJWMWCIHQNCP-UHFFFAOYSA-M
• SMILES: CCCC[N+](CCCC)(CCCC)CCCC.OS(=O)(=O)[O-]

Tetrabutylammonium hydrogensulfate（Cat No.:R051325）is a quaternary ammonium salt with the formula (C₄H₉)₄NHSO₄. It consists of a tetrabutylammonium cation and a hydrogensulfate anion, forming a white to off-white crystalline solid. This compound is widely used as a phase-transfer catalyst in organic synthesis, facilitating reactions between aqueous and organic phases. It is particularly useful in alkylation, oxidation, and nucleophilic substitution reactions. Its high solubility in both polar and non-polar solvents enhances its versatility. Tetrabutylammonium hydrogensulfate is also used in electrochemistry and materials science, often improving reaction efficiency and selectivity.