Overview
Dodecene is a C12 linear alpha-olefin (LAO) belonging to the alkene hydrocarbon family. As an intermediate in petrochemical processes, it's produced via oligomerization of ethylene or Fischer-Tropsch synthesis. The industrial-grade product typically contains 94-98% 1-dodecene isomers. Global production exceeds 500,000 metric tons annually, with major manufacturers concentrated in the Middle East, North America, and Asia. Its reactive double bond at the alpha position makes it valuable for downstream chemical modifications, particularly in the synthesis of surfactants and lubricant additives.
Physical and Chemical Properties
As a long-chain hydrocarbon, dodecene exhibits low polarity and high hydrophobicity. Its viscosity measures approximately 1.4 mPa·s at 25°C, with a flash point around 76°C (Pensky-Martens closed cup). The compound undergoes typical alkene reactions including hydroformylation, epoxidation, and polymerization. Key stability considerations include its susceptibility to oxidation when exposed to air, necessitating nitrogen blanketing during storage. Thermal decomposition occurs above 300°C, yielding lower molecular weight fragments. UV-Vis spectroscopy shows characteristic absorption at 190-210 nm due to the π→π* transition of the C=C bond.
Main Applications
Approximately 60% of dodecene production is consumed in manufacturing dodecylbenzene sulfonate surfactants for detergents. These anionic surfactants offer excellent foaming and cleaning properties in household and industrial cleaners. In lubricant formulations, polyalphaolefins (PAOs) derived from dodecene provide superior thermal stability and viscosity index compared to mineral oils. The compound also serves as a co-monomer in linear low-density polyethylene (LLDPE) production, where it introduces controlled branching to improve film properties. Emerging applications include bio-based plasticizers and synthetic drilling fluids.
Safety and Storage
Classified as a Category 3 flammable liquid under GHS, dodecene requires storage in UN-certified containers with proper grounding to prevent static discharge. Recommended materials include carbon steel or stainless steel (304/316) for bulk storage tanks. Personnel handling should wear chemical-resistant gloves (nitrile or neoprene), splash goggles, and flame-retardant clothing. Spill containment measures should include non-combustible absorbents like vermiculite. Firefighting requires alcohol-resistant foam; water spray may be used to cool containers but isn't effective for direct extinguishment.
B2B Procurement Guide
Industrial buyers should specify technical parameters including isomer content (≥94% 1-dodecene), bromine number (≥140 g Br2/100g), and acid value (<0.1 mg KOH/g). Transportation typically occurs in ISO tank containers (20-24 MT) or bulk chemical tankers. Supplier evaluation should consider API or similar certifications for petrochemical producers. Regional price variations reflect feedstock (ethylene) costs and logistics; Middle Eastern suppliers often offer competitive FOB prices. Just-in-time inventory is recommended due to the product's 6-12 month shelf life under proper storage.
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