TCI M0284 is 5-Methylnonane, a branched isomer of decane bearing a single methyl group exactly at the centre of the chain, on the fifth carbon atom. This symmetrical branch position makes it the most distinctive member of the methylnonane isomer series and completes the set of standards required for thorough hydrocarbon analysis. Laboratories use this compound alongside its related isomers to build a systematic understanding of how branch position influences physical behaviour, relative boiling point, and elution order on gas chromatography columns.
The advantage of this compound as a laboratory material lies in its stability and the clarity of its identity. As a saturated alkane with no functional groups, it is practically unreactive under normal storage and handling conditions, so the composition of prepared standard solutions remains intact over time. Its relatively symmetrical molecular shape distinguishes its chromatographic behaviour from that of the 2-, 3-, and 4-methylnonane isomers, and the difference is consistent enough to serve as an analytical marker. Its solubility in non-polar solvents makes it straightforward to prepare dilution series for calibration curves and detector linearity testing.
In Indonesian laboratories, this compound is applied where a well-defined branched alkane reference is needed. Analysts working on hydrocarbon characterisation rely on it to anchor retention behaviour, to confirm that a separation method resolves closely related isomers, and to support method development work that depends on predictable, reproducible chromatographic response from a compound whose structure and behaviour are unambiguous.
- Gas chromatography retention indexing: the central methyl branch gives an elution position clearly distinct from other methylnonane isomers, making it a dependable anchor point for retention index assignment.
- Calibration curve preparation: its ready solubility in non-polar solvents allows accurate dilution series to be built, and its chemical inertness keeps each concentration level stable throughout the analytical run.
- Detector linearity testing: as a stable saturated hydrocarbon with no functional groups, it produces a consistent response that lets analysts verify detector behaviour across a range of concentrations.
- Isomer separation method development: comparing it with the 2-, 3-, and 4-methylnonane isomers shows whether a column and temperature programme can genuinely resolve branch-position differences in practice.
- Hydrocarbon characterisation studies: it supports systematic investigation of how branching position affects relative boiling point and physical behaviour within a homologous series of alkanes.
| Brand | TCI |
|---|---|
| CAS number | 15869-85-9 |
| Molecular formula | — |
| Purity | — |
| Category | Chemistry > Building Blocks > Non-Heterocyclic Building Blocks |
| Pack sizes | available in standard TCI catalogue pack sizes; please confirm the option required when ordering |
| Physical form | — |
| Storage | keep in a tightly closed container in a cool, well-ventilated area away from ignition sources |
- Chemical name: 5-Methylnonane
Store the material in its original tightly closed container, kept in a cool, dry, and well-ventilated area away from heat, sparks, open flames, and other ignition sources. Glass bottles with chemically resistant closures are suitable, and containers should be kept sealed between uses to limit evaporative loss. Handle in a fume hood, wear safety glasses, gloves, and a laboratory coat, and avoid prolonged inhalation of vapour. Keep the compound separated from strong oxidising agents, ground containers when transferring larger volumes, and follow the manufacturer's safety data sheet together with your institution's standard procedures for flammable organic liquids.
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