Cetane (hexadecane) is a clear colorless liquid. It is miscible with aliphatic hydrocarbons; solubility in water is negligible. Cetane has a linear structure, it consists of a chain of 16 carbon atoms;
Cetane is produced from oil processing;
Cetane is often used as a short-hand for cetane number, a measure of the combustibility of diesel fuel. Cetane ignites very easily under compression; for this reason, it is assigned a cetane number of 100, and serves as a reference for other fuel mixtures.