Dodecane [Standard Material for GC] TCI S0284

Chemical Identity

CAS No.: 112-40-3
PubChem: CID 8182·SID 87575808
Formula: C12H26
Molecular weight: 170.33 g/mol
Purity: >99.5%(GC)
Reference databases: ChEBI·ChemSpider·ECHA·Wikipedia

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: dodecane
SMILES: CCCCCCCCCCCC
InChIKey: SNRUBQQJIBEYMU-UHFFFAOYSA-N

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TCI S0284 Dodecane [Standard Material for GC] is a straight-chain aliphatic hydrocarbon with twelve carbon atoms, supplied specifically as a standard material for gas chromatography. In the laboratory, it serves as a reference to confirm that a GC instrument is working correctly. Analysts use it to determine retention times, test column performance, and compare against unknown peaks when identifying hydrocarbon compounds in samples. As a fixed point of reference, a standard like this helps laboratories produce analytical data that stays consistent, traceable, and defensible from one test to the next.

Dodecane is a good choice as a standard because its molecular structure is simple, it has no reactive functional groups, and it is relatively chemically stable under normal analytical conditions. Because it is nonpolar, it elutes in a predictable way on many types of capillary columns, which makes it suitable as a marker in a normal alkane series. Dodecane is a clear liquid at room temperature and dissolves easily in nonpolar organic solvents, so standard solutions are simple to prepare. The GC-specific designation shows that TCI supplies this material for chromatographic reference work rather than general synthesis.

In Indonesian laboratories, this standard is typically used in quality control units, testing laboratories, research institutions, and university teaching laboratories that run gas chromatography routinely. Analysts in petroleum, fuel, environmental, and industrial chemical testing often include dodecane when checking system suitability or building retention references for hydrocarbon analysis. It also helps laboratories that keep internal method documentation, because a recognised reference compound makes results easier to compare across instruments, operators, and testing periods.

Related TCI products

Retention time determination: dodecane gives a stable, reproducible peak that analysts can use to establish and confirm retention times under a defined set of GC conditions.
Column performance testing: its predictable nonpolar elution behaviour lets analysts check peak shape, resolution, and column condition before running routine samples.
Hydrocarbon identification: it acts as a comparison point when identifying straight-chain hydrocarbons in samples, so analysts can match unknown peaks against a known reference.
Normal alkane series marker: as a C12 straight-chain alkane, it fits naturally into n-alkane reference series used to build retention indices on capillary columns.
System suitability and method verification: a simple, chemically stable reference compound helps laboratories record that their GC system is performing as expected before reporting analytical results.

Brand	TCI
CAS number	112-40-3
Molecular formula	—
Purity	—
Category	Analytical Chemistry > Analytical Standards > Chromatography Standards
Pack sizes	—
Physical form	Clear liquid at room temperature
Storage	Keep tightly closed in a cool, dry, well-ventilated place, following the supplier's label and SDS

Product code: S0284

Store Dodecane [Standard Material for GC] in its original tightly sealed container in a cool, dry, well-ventilated area, away from heat sources, open flames, and strong oxidising agents. Keep the container closed when not in use so the standard is not contaminated and does not evaporate, since either would affect its reliability as a reference. Use clean glass syringes, vials, and volumetric glassware when preparing standard solutions. Handle it in a well-ventilated area or fume hood, and wear standard laboratory protective equipment, including gloves, safety glasses, and a lab coat. Always follow the label and the Safety Data Sheet provided with the product, and dispose of residues according to your laboratory's chemical waste procedures.

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