| 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 n n n n n n 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.) |