An aryl sulfonic acid compound represented by formula (1).
Ar1-O-Ar2 (1)
[In the formula, Ar1 represents a group represented by formula (2), and Ar2 represents a group represented by formula (3).
(in the formula, q represents an integer of 1-4.)]
式 (1) 所代表的芳基
磺酸化合物。
Ar1-O-Ar2 (1)
[式中,Ar1 代表由式(2)表示的基团,Ar2 代表由式(3)表示的基团。
(式中,q 代表 1-4 的整数)]。