Overview
Undecane is a saturated hydrocarbon belonging to the alkane series, consisting of 11 carbon atoms in an unbranched chain. As a mid-weight alkane, it serves as a model compound in fuel chemistry due to its combustion characteristics resembling diesel fractions. Industrially, it is produced through petroleum distillation or Fischer-Tropsch synthesis. Unlike shorter alkanes, undecane's higher molecular weight grants it lower volatility, making it suitable for applications requiring sustained evaporation rates. Its chemical inertness and predictable physical properties contribute to its utility as a reference standard in analytical chemistry and material science research.
Physical and Chemical Properties
Undecane exhibits typical alkane characteristics: non-polarity, hydrophobicity, and thermal stability below 200°C. Its density (0.74 g/cm³) is lower than water, and viscosity measures approximately 1.4 cP at 25°C. The compound's vapor pressure is relatively low (0.3 mmHg at 25°C), reducing airborne concentration risks under normal conditions. Chemically, undecane undergoes combustion reactions with oxygen and can participate in free-radical halogenation. It shows resistance to acids, bases, and oxidizing agents at ambient temperatures. The auto-ignition temperature is 205°C, requiring careful handling near potential ignition sources in industrial settings.
Main Applications
In fuel research, undecane serves as a surrogate component for simulating jet fuel and diesel combustion behaviors. Its consistent properties enable precise calibration in gas chromatography (GC) as a retention index marker. The petrochemical industry employs it as a process solvent for polymer and resin formulations. Specialty applications include use as a dielectric fluid in high-voltage equipment and as a carrier solvent for pesticide formulations. Recent research explores its potential as a phase-change material (PCM) in thermal energy storage systems due to its favorable melting characteristics.
Safety and Storage
As a flammable liquid, undecane requires storage in approved safety cabinets with proper grounding. Containers should be kept tightly sealed to prevent vapor accumulation. Secondary containment is recommended for bulk storage (>20L) to mitigate spill risks. Electrical equipment in storage areas must meet explosion-proof ratings. Personal protective equipment (PPE) including chemical-resistant gloves (nitrile/neoprene) and splash goggles should be used during handling. In case of spills, absorb with inert material (vermiculite or sand) and dispose as hazardous waste. Proper ventilation (≥4 air changes/hour) is essential in workspaces to maintain vapor concentrations below 500 ppm (ACGIH TLV).
B2B Procurement Guide
Industrial buyers should specify purity requirements: technical grade (90-95%) for general applications versus analytical grade (≥99%) for research purposes. Bulk purchases (drum quantities) typically offer 10-15% cost savings compared to laboratory-scale packaging. Verify supplier certifications for REACH/OSHA compliance documentation. Key quality indicators include water content (<0.1%) and absence of unsaturated hydrocarbons (verified by GC). For international shipments, ensure proper hazardous material classification (UN 2330, Packing Group III). Establish supplier audit protocols for batch consistency, especially when used as a process intermediate in pharmaceutical manufacturing.
Related Manufacturers
- 主营：除垢剂、乳化剂、界面剂、界面处理剂、纺织柔软剂、工业级固化剂、丁腈胶乳、丁苯胶乳、三乙二醇、甲酰胺、丙二醇、二甲基乙酰胺、甘油、三乙醇胺、乙二醇
- 主营：多聚甲醛、正硅酸乙酯28 40、正十二烷、二甲苯、四氢呋喃、液体丁腈橡胶、乙二醛、四氯乙烯、三氯乙烯、环己酮、环己胺、二甲基甲酰胺、二甲基乙酰胺、航空煤油、石油醚、糠醛、亚氯酸钠、铬酸酐、顺酐、保险粉、无水乙醇、异丙醇、二氯甲烷、醋酸乙酯、醋酸甲酯
- 主营：增塑洗涤剂、间二甲苯、乳化剂、防冻液、丙二醇、三甲苯、苯乙烯、溶剂油、钛酸四丁酯、甲醇、乙醇、仲辛醇、异丙醇、85磷酸、碳酸丙烯酯、甲基丙烯酸、丙烯酸羟乙酯、二甲苯、脂肪酸甲酯、甲酸、氨水、丙烯酸、草酸、聚乙二醇
- 主营：苯甲醇、抗冻剂、丙三醇、润滑剂、叶面肥、慢干溶剂、二甲基亚砜、二甲基乙酰胺、十二水硫酸铝钾
- 主营：正十一烷、油漆涂料、涂料溶剂
- 主营：白油、乙二醇、缝纫机油、正十一烷、针织机油、一类基础油、工业润滑油、防冻液
- 主营：120号溶剂油、150号溶剂油、200号溶剂油、正十一烷、260号溶剂油、白油、D40溶剂油、D60溶剂油、D80溶剂油、D130溶剂油、磺化煤油、丙二醇、对甲苯磺酰氯、莫卡、聚乙二醇、二茂铁、石蜡、乙二醇、铝粉膏、抗氧剂T501、甲基丙烯酸缩水甘油酯、甲基叔丁基醚、乙二醇丁醚、甲缩醛、石脑油、正十四烷
- 主营：多聚甲醛、环己胺、正硅酸乙酯28 40、正十一烷、正十二烷、异丙醇、无水乙醇、铬酸酐、亚氯酸钠、二甲基甲酰胺、硫酸羟胺、戊二酸二甲酯、邻苯二甲酸二乙酯、二甲苯、二氯甲烷、环己烷、四氯乙烯、环己酮、环氧氯丙烷、甲醇、甲酸、乙腈、苯酚、乙二醇乙醚醋酸酯、醋酸丁酯
- 主营：乙硫醇、环丁砜、四氢吡咯、四氢噻吩、四氢呋喃、三聚甲醛、3-羟基丙腈、二甲基亚砜、二甲基二硫醚、氯乙酸、氯乙酸钠、偏铝酸钠、异辛烷、偏三甲苯、硬脂酸锌、苯酚、邻苯二甲酸二丁酯、MIBC、苯酐、顺酐
- 主营：四氢噻吩、二甲基亚砜、二甲基二硫醚、正十一烷、乙酰氯、氢氟酸、二甲苯、甲酰胺、丙烯腈、正丙醇、水杨酸、甲酸钠、正丙醛、苯甲醛、丙二腈、二甲基硫醚、硬脂酸、石油醚、水合肼、氯乙酸、乙二醛、乙二醇、异戊烷、苯乙烯、仲丁胺、叔丁醇
- 主营：正构十一烷、清洗剂
- 主营：四氢噻吩、二甲基二硫、一乙醇胺、正十一烷、异辛醇、环丁砜、二甲基亚砜、异丙醚、环己酮、异辛烷、氟硼酸、三乙胺、正庚烷、燕化苯酚、马来酸酐、三乙醇胺、亚硝酸钠、鲁西甲酸、三氧化二锑、3-乙氧基丙胺
- 主营：四氢噻吩、乙硫醇、二甲基亚砜、二甲基二硫、正辛硫醇、百里香酚、氟化铯、乙硫氨酯、四水合乙酸钴、二异丁基酮、乳酸乙酯、正己烷、2-甲基吡啶、环氧氯丙烷、对氯间甲酚、亚磷酸三苯酯、环丁砜、甲基丙烯酸甲酯、二乙烯基苯、四氯化锆、二氧六环、氯化锂、硫酸锂
- 主营：18908-66-2、癸甲氯铵、咪唑烷酮、十一碳二元酸、二异丁腈、饲料添加剂、分散剂工业、柠檬酸三丁酯、聚乙烯吡咯烷、二甲基溴化铵
- 主营：四氢噻吩、乙硫醇、单氰胺、十一烷酸样品实验、二甲基二硫醚、3-甲硫基丙醛、四氢吡咯、邻氯苯腈、噻吩、盐酸羟胺、硬脂酸锌、异丙胺、氯乙酸、氟硼酸