The reaction of glycols with boric acid in aqueous solutions to form an easily saponified ester has long been known. This acid ester is a stronger acid than boric acid and an increase in conductivity results.
Proceedings of the Iowa Academy of Science
©1942 Iowa Academy of Science, Inc.
Coleman, George H. and Miller, Aaron
"Electordialysis of Sugar Borates,"
Proceedings of the Iowa Academy of Science, 49(1), 257-261.
Available at: https://scholarworks.uni.edu/pias/vol49/iss1/33