Sodium 1-Octanesulfonate TCI O0123

Chemical Identity

CAS No.: 5324-84-5
PubChem: CID 23669624·SID 87574128
Formula: C8H17NaO3S
Molecular weight: 216.28 g/mol
Purity: >98.0%(T)
Reference databases: ChemSpider·ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: sodium octane-1-sulfonate
SMILES: CCCCCCCCS(=O)(=O)[O-].[Na+]
InChIKey: HRQDCDQDOPSGBR-UHFFFAOYSA-M

Rp 1.776.600,00

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Sodium 1-Octanesulfonate from TCI is the sodium salt of 1-octanesulfonic acid, an anionic surfactant with an eight-carbon alkyl chain. Analytical laboratories know it mainly as an ion-pair reagent for reversed-phase high-performance liquid chromatography (HPLC). In this technique it helps separate basic or cationic compounds that are otherwise poorly retained on the column. It is catalogued as a non-heterocyclic building block, but its main role is in pharmaceutical analysis, biochemistry and quality control testing, where reliable separation of charged analytes is part of daily work.

Laboratories choose this reagent because its sulfonate group stays negatively charged across a wide pH range. That lets it form stable ion pairs with positively charged analytes. The octyl chain gives balanced hydrophobicity: compared with longer-chain alkylsulfonates, it increases analyte retention without making run times too long. It also dissolves readily in water, so it is easy to prepare as part of the mobile phase. TCI's consistent quality matters here, because impurities in an ion-pair reagent can disturb the chromatogram baseline and reduce the reliability of routine results.

In Indonesian laboratories, Sodium 1-Octanesulfonate is used mostly in pharmaceutical quality control, contract testing and research settings that run reversed-phase HPLC methods for basic or cationic compounds. Analysts add it to aqueous mobile phases when they develop or validate methods that need more retention for charged analytes. Academic and biochemistry laboratories also use it when studying polar, positively charged molecules. With a known, consistent supply from a recognised brand, laboratories can keep their methods reproducible across batches and over long analytical programmes.

Related TCI products

Ion-pair reversed-phase HPLC: the negatively charged sulfonate pairs with cationic analytes, so basic compounds that elute too early on standard columns are retained longer and separate better.
Pharmaceutical quality control: the balanced octyl chain gives enough retention for basic drug substances while keeping run times practical for routine batch testing and release analysis.
Biochemical analysis: it stays ionised across a wide pH range, so it can be used with mobile phases suited to separating positively charged biomolecules and related polar compounds.
HPLC method development and validation: its good water solubility makes mobile phase preparation simple and repeatable, which supports consistent retention behaviour while analysts optimise and document methods.
Surfactant and ionic interaction studies: as an anionic surfactant with a defined eight-carbon chain, it is a useful model compound for studying how chain length affects hydrophobic and ionic behaviour.

Brand	TCI (product code O0123)
CAS number	5324-84-5
Molecular formula	—
Purity	—
Category	Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes	available in the pack sizes offered in the TCI catalogue; please confirm options when enquiring
Physical form	solid sodium salt, readily soluble in water
Storage	keep in a tightly closed container in a dry place, away from moisture

Store Sodium 1-Octanesulfonate in its original, tightly sealed container in a cool, dry, well-ventilated area, away from moisture and incompatible materials such as strong oxidising agents. Close the container promptly after each use so the reagent does not pick up moisture, which can affect weighing accuracy and mobile phase consistency. Handle it following good laboratory practice: wear safety glasses, gloves and a laboratory coat, avoid creating or breathing in dust, and prevent contact with skin and eyes. Weigh it in a clean, dry area and filter prepared mobile phases before HPLC use. Always check the supplier's Safety Data Sheet for full hazard, first-aid and disposal information before use.

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