Tetrabutylammonium bisulfate

suitable for ion pair chromatography, LiChropur, ≥99.0%

Tetrabutylammonium hydrogen sulfate
Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level




≥99.0% (T)




HPLC: suitable
ion pair chromatography: suitable


171-174 °C

anion traces

bromide (Br-): ≤50 mg/kg


10 % in H2O

UV absorption

λ: 210 nm Amax: 0.06
λ: 220 nm Amax: 0.05
λ: 230 nm Amax: 0.03
λ: 260 nm Amax: 0.02
λ: 500 nm Amax: 0.02


corresponds to standard for RP gradient test
corresponds to standard for filter test

SMILES string




InChI key


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General description

Tetrabutyammonium bisulfate (TBAHS) is an ion-pairing reagent. It acts as a catalyst in hydrolysis of aziridines and epoxides and the catalyst can be recycled.


TBAHS was suitable as ion-pairing reagent in determination and separation of thallium using ionic liquid-assisted ion-pairing liquid-liquid microextraction and inductively coupled plasma mass spectrometry. It was suitable as mobile phase component for a HPLC-UV analysis to quantify chondroitin sulfate.

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany


CorrosionExclamation mark

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

348.1 °F - closed cup

Flash Point(C)

175.6 °C - closed cup

Certificate of Analysis
Certificate of Origin
Leticia B Escudero et al.
Journal of hazardous materials, 244-245, 380-386 (2012-12-29)
A fast and simple method involving separation and determination of thallium (Tl) species, based on novel ionic liquid-assisted ion pairing dispersive liquid-liquid microextraction (DLLME) method, was developed. Initially, Tl(III) was selectively complexed with chloride ion to form [TlCl(4)](-) chlorocomplex. Subsequently...
David Ji et al.
Journal of AOAC International, 90(3), 659-669 (2007-06-22)
A method to quantify chondroitin sulfate in raw materials and dietary supplements at a range of about 5 to 100% (w/w) chondroitin sulfate has been developed and validated. The chondroitin sulfate is first selectively hydrolyzed by chondroitinase ACII enzyme to...
Ren-Hua Fan et al.
Organic & biomolecular chemistry, 1(9), 1565-1567 (2003-08-21)
Bu4NHSO4 (TBAHS) is an effective catalyst for the hydrolysis of aziridines and epoxides under mild and non-metal conditions to give the corresponding beta-amino alcohols and 1,2-diols in high yields. The catalyst can be recycled.
K M Frankowski et al.
Journal of dairy science, 97(9), 5356-5370 (2014-07-16)
Many food companies are trying to limit the amount of sodium in their products. Permeate, the liquid remaining after whey or milk is ultrafiltered, has been suggested as a salt substitute. The objective of this study was to determine the...
Fabio Galeotti et al.
Journal of chromatography. A, 1284, 141-147 (2013-03-05)
In this study, by using tetrabutylammonium bisulfate as ion-pairing reagent, we were able to separate all the main heparin/heparan sulfate disaccharides generated by the action of heparinases along with the main Hep tetrasaccharide possessing a 3-O-sulfate group on the sulfoglucosamine...
Because reversed-phase HPLC is primarily dependent on hydrophobic interactions between the stationary phase and analyte, ion pairing is occasionally necessary to obtain sufficient retention of polar, ionizable compounds.
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