Overview
Undecyl is a linear hydrocarbon radical (C11H23) derived from undecane, primarily used as a building block in organic synthesis. It serves as an intermediate for surfactants, lubricants, and specialty chemicals. Industrially, undecyl groups are incorporated into larger molecules to modify properties like solubility or hydrophobicity. The radical’s reactivity makes it valuable for creating branched or functionalized compounds in pharmaceuticals and agrochemicals.
Physical and Chemical Properties
As a saturated hydrocarbon chain, undecyl is nonpolar and insoluble in water but miscible with most organic solvents. Its boiling point (196–198°C) reflects typical alkane volatility trends. Key chemical behaviors include participation in free-radical reactions (e.g., polymerization initiators) and nucleophilic substitutions. The radical’s stability and moderate reactivity balance makes it versatile for synthetic applications.
Main Applications
Undecyl radicals are critical in producing surfactants like sodium undecyl sulfate, which are used in detergents and emulsifiers. Their hydrophobic tail improves oil solubility in formulations. In lubricant additives, undecyl groups reduce friction and wear. They also serve as intermediates in fragrances, plasticizers, and corrosion inhibitors, leveraging their ability to alter molecular polarity.
Safety and Storage
Undecyl compounds are flammable and require storage in explosion-proof areas with inert gas blankets. Static discharge must be prevented during handling. Personal protective equipment (PPE) such as gloves and goggles is mandatory due to skin/eye irritation risks. Spills should be contained with absorbent materials like sand, not water.
B2B Procurement Guide
Buyers should verify purity (typically 95–99%) via GC analysis and request certificates of analysis (CoA). Bulk shipments in ISO tanks or steel drums are common. Supplier audits are recommended to ensure compliance with REACH or TSCA regulations. Long-term contracts may secure better pricing for high-volume users in the surfactant or lubricant industries.
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