Sodium 1-octanesulfonate solution

suitable for ion pair chromatography, LiChropur, concentrate, ampule

1-Octanesulfonic acid sodium salt
Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level




ampule of 25 mL


HPLC: suitable
ion pair chromatography: suitable


in concentrate

UV absorption

λ: 210 nm Amax: 0.08
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

Concentrate for 6x1 L ready-to-use solution. Dilute contents of one ampule (~0.3 M) to 1 L with HPLC grade water to obtain a 0.005 M eluent solution.
Sodium 1-octanesulfonate monohydrate (NaOS) is an ion-pairing reagent.


NaOS has been used as ion-pairing reagent for ultra-high performance liquid chromatography (UPLC) analysis with photodiode array detection to estimate paraquat (methyl viologen) in tissue homogenate. It may also be used in determination of dopamine and its metabolites in brain microdialysates using liquid chromatography combined with electrospray ionization tandem mass spectrometry (LC–ESI-MS/MS).

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Rapid and simple analysis of paraquat in tissue homogenate by ultra-high performance liquid chromatography.
Merritt, T. J. S., et al.
Analytical Methods : Advancing Methods and Applications, 3.6, 1428-1432 (2011)
Kamila Syslová et al.
Journal of chromatography. A, 1218(21), 3382-3391 (2011-03-15)
A sensitive assay method was developed for a parallel, rapid and precise determination of dopamine and its metabolites, homovanillic acid, 3-methoxytyramine and 3,4-dihydroxyphenylacetic acid, from brain microdialysates. The method consisted of a pre-treatment step, freeze-drying (lyophilization), to concentrate dopamine and...
J L Razak et al.
Pharmaceutical research, 18(1), 104-111 (2001-05-05)
The aim of this study was to develop a method based upon electrokinetic chromatography (EKC) using oppositely charged surfactant vesicles as a buffer modifier to estimate hydrophobicity (log P) for a range of neutral and charged compounds. Vesicles were formed...
P G Jaison et al.
Journal of chromatography. A, 1216(9), 1383-1389 (2009-01-27)
Studies were carried out for the separation of uranium (U) and thorium (Th) on reversed-phase (RP) C18 columns using mandelic acid as an eluent. Retention of thorium-mandelate on the unmodified stationary phase was found to be greater than that of...
Tejwant Singh et al.
Physical chemistry chemical physics : PCCP, 12(37), 11728-11735 (2010-08-10)
We have observed dual transitions in various physical properties while investigating the surfactant-like behavior of the ionic liquid (IL) 1-butyl-3-methylimidazolium octylsulfate [C(4)mim][C(8)SO(4)] in aqueous media. Interestingly, in conductivity measurements, it was found that the second transition, which is comparatively weak...

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