Indane or indan is a hydrocarbon petrochemical compound.
Derivatives include compounds such as 1-methyl-indane and 2-methyl-indane (where one methyl group is attached to the five carbon ring), 4-methyl-indane and 5-methyl-indane (where one methyl group is attached to the benzene ring), various dimethyl-indanes, and various pharmaceutical derivatives.Other derivatives can be obtained indirectly, e.g. the reaction of diethyl phtalate with ethylacetate using metallic sodium and ethanol as a catalyst. The reaction yelds indanedione ethyl ester which can react with the sodium ions yielding a salt. This can be reversed by adding an aquous solution of hydrochloric acid.
Indane can also be converted in a catalytic reactor to other aromatics such a xylene.