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Solution T was distinctly acid ( P h =4.5), solution J was practically neutral ( P h = 6 . 6 ) , while. solution A was distinctly alkaline (Ph = 8.0). T h e erratic behavior of solution A is probably due t o its alkaline reaction. Obviously calcium chloride is entirely unsuited for use in anti-freezing solutions in t h e cooling systems of motor vehicles in which aluminum or copper or both are in electrical contact with iron or steel. Rapid destruction, particularly of t h e aluminum parts, isdoi:10.1021/ie50115a019 fatcat:mc37orrcjzasnedvy6ucc33k3y