Overview
Methyldecane, also known as 2-methyldecane, is a branched-chain alkane derived from decane. It is a clear, colorless liquid with a mild hydrocarbon odor. As a mid-range hydrocarbon, it finds utility in industrial applications due to its balanced volatility and solvent properties. In laboratory settings, methyldecane serves as a reference standard in gas chromatography due to its well-defined retention time. Its chemical stability and predictable behavior make it suitable for calibration and method development.
Physical and Chemical Properties
Methyldecane exhibits typical alkane characteristics: low polarity, hydrophobic nature, and resistance to reactions with acids or bases under ambient conditions. Its density (0.74 g/cm³) is lower than water, and it has a boiling point range of 190–195°C, making it suitable for high-temperature applications. The branched structure of methyldecane confers slightly different physical properties compared to its linear isomer, n-undecane, including a lower melting point and altered solubility profile. These differences are critical when selecting solvents or formulating lubricants.
Main Applications
Methyldecane is primarily used as a solvent in specialty coatings and adhesives, where its moderate evaporation rate ensures proper film formation. In lubricant formulations, it acts as a base oil additive to improve viscosity-temperature performance. Another niche application is in analytical chemistry, where it serves as a retention index marker in gas chromatography. Its consistent behavior helps identify unknown compounds by relative retention times.
Safety and Storage
As a flammable liquid, methyldecane requires careful handling. Storage areas should be equipped with explosion-proof fixtures, and containers must be grounded to prevent static discharge. PPE such as gloves and goggles is recommended during transfer operations. In case of spills, absorb with inert materials like sand or vermiculite. Avoid releasing into waterways due to potential environmental persistence. Regulatory guidelines (e.g., OSHA, GHS) classify it as a Category 4 flammable liquid.
B2B Procurement Guide
When sourcing methyldecane, prioritize suppliers who provide batch-specific certificates of analysis (CoA) to verify purity (typically ≥98%). Bulk purchases (drums or totes) often yield cost savings but require proper storage infrastructure. For international shipments, confirm compliance with transport regulations (e.g., UN number 1993 for flammable liquids). Negotiate incoterms clearly to allocate responsibilities for logistics and insurance.
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