| abstract |
A composition contains one or more compounds represented by general formula (i) and one or more compounds represented by general formula (ii), where a content of the compounds represented by general formula (i) is 5% to 30% and a content of the compounds represented by general formula (ii) is 5% to 25%:n n(In the formulae, R i1 , R i2 , and R ii1 each independently represent an alkyl group having 1 to 8 carbon atoms where one -CH 2 - or two or more non-adjacent -CH 2 - in the alkyl group may each independently be substituted with -CH=CH-, - C≡C-, -O-, -CO-, -COO-, or -OCO-, X i1 to X i6 each independently represent a hydrogen atom or a fluorine atom, and X ii1 represents a hydrogen atom, a fluorine atom, or a chlorine atom.) |