noun[mass noun] Chemistry
A colourless liquid hydrocarbon of the alkane series, present in petroleum spirit.
- Chemical formula: C16H34
- Its density, viscosity, cetane index, combustion point, and several other parameters they looked at compare favorably with those of ethyl esters of sunflower, rape, groundnut, and soybean oils.
- The secret formula behind the new diesel relies upon an increase in cetane; the equivalent of octane used in petrol.
- The composition may optionally also contain pour point depressants, cetane improvers, carbon-containing compounds which react with water, and/or emulsifiers.
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