헥사데케인알케인의 일종으로 세탄/세테인(Cetane)이라고 불리기도 한다. 화학식은 C16H34. 어는점이 18℃[1]여서 상온에서는 액체와 고체 사이를 오간다.
용도
경유에 많이 함유되어 있으며, 경유의 질을 비교하는 세탄가의 기준 물질이다. 100% n-헥사디케인을 100으로 잡으며, α-메틸나프탈렌을 0으로 잡는다. 참고로 헥사디케인의 옥탄가는 -30. 휘발유용 엔진에 넣기에는 영 좋지 않다. 반대로 휘발유를 경유용 엔진에 넣어도 마찬가지.
화학적 성질
colourless liquid
용도
Hexadecane is a component of gasoline, and is used as a
solvent, organic intermediate, ignition standard for diesel
fuels, and as stock for hydrocracking processes.
일반 설명
Colorless liquid.
공기와 물의 반응
Flammable. Insoluble in water.
반응 프로필
Saturated aliphatic hydrocarbons, such as N-HEXADECANE-D34, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. When heated sufficiently or when ignited in the presence of air, oxygen or strong oxidizing agents, they burn exothermically to produce carbon dioxide and water.
건강위험
ACUTE/CHRONIC HAZARDS: Flammable.
화재위험
Combustible.
Purification Methods
Pass cetane through a column of silica gel and distil it under vacuum in a column packed with Pyrex helices. Store it over silica gel. It also crystallises from acetone, or fractionally crystallise it by partial freezing. [Beilstein 1 IV 537.]
