<P> In chemistry, a racemic mixture, or racemate / reɪˈsimeɪt /, is one that has equal amounts of left - and right - handed enantiomers of a chiral molecule . The first known racemic mixture was racemic acid, which Louis Pasteur found to be a mixture of the two enantiomeric isomers of tartaric acid . A sample with only a single enantiomer is an enantiomerically pure, enantiopure or homochiral compound . </P> <P> From racemic acid found in grapes; from Latin racemus, meaning a bunch of grapes . </P>

Substance which does not have 1 melting point