正二十烷

正二十烷（CAS 629-94-7）的公开数据库记录，列此仅供独立核对。

危险化学品分类与危害说明

法规与备案状态

物理形态与操作说明

• Crystals. (NTP, 1992)
• Solid; [CAMEO] White crystalline solid; [Alfa Aesar MSDS]
• Crystals from water
• White solid
• Odorless
• In water, 2.9X10-8 mg/L at 25 °C (extrapolated)

公开数据库收录的理化数据

这个物质在各数据库里的编号

数据库记载的用途

• They are used mainly in applications for which isoalkanes are not acceptable for biological reasons, e.g., the production of detergents or proteins. /Higher n-Alkanes/
• Solid n-alkanes (paraffin waxes) are used in a variety of applications, e.g., ... oxidation, and chlorination reactions. /Higher n-Alkanes/
• Aedes aegypti mosquito is one of the most notorious vectors of dangerous diseases like dengue hemorrhagic fever and chikangunya. One method of control of the vectors is by the use of semiochemicals or pheromones. The pheromone n-heneicosane (C21) has been proved to be effective in attracting the female Aedes aegypti to lay eggs in the treated water and the growth of the larva is controlled by insect growth regulator diflubenzuron (DB).
• The liquefaction of coal provides the greatest variety of saturated hydrocarbons. The Fischer-Tropsch synthesis produces alkanes from syngas (CO + H2) in the range C1 to C30 or higher depending on the process variant: depending on the catalyst employed, the synthesis yields predominantly liquid hydrocarbons in the gasoline range, along with gases from C1 to C4 when iron-based catalysts are used, while cobalt-based catalysts produce longer chain hydrocarbons in the diesel and wax range that often undergo, depending
• Suitable sources for n-alkanes with more than six carbon atoms are the appropriate petroleum distillate fractions, from which the n-paraffins can be isolated in high isomeric purity (= 95% linearity) by selective separation techniques, especially fractional distillation. /Higher n-Alkanes/
• Gas-phase dehydrogenation of n-alkanes over noble-metal catalysts yield the corresponding n-alkenes at low conversion rates (ca. 10%) with predominantly internal double bonds. The corresponding alkenes can be isolated in high purity by selective molecular-sieve processes. /Higher n-Alkanes/

它在各数据库里的别名

HENEICOSANE; n-Heneicosane; Henicosane; 629-94-7; I93S5U5DMP; DTXSID9047097; CHEBI:32931; RefChem:38740; DTXCID7027097; 211-118-9; MFCD00009346; UNII-I93S5U5DMP; Heneicosane, analytical standard; CH3-[CH2]19-CH3; HY-W089845; H0367

计算机算出的分子描述符

数据库摘要

n-Heneicosane · CAS 629-94-7 · C21H44. UNII I93S5U5DMP. 沸点: 673.7 °F at 760 mmHg (NTP, 1992); 沸点: 359 °C; 熔点: 104.9 °F (NTP, 1992).

数据来源：PubChem / Wikidata；与随货 COA 不一致时以 COA 为准。