Z 1372 (OTTO) Zirconium(IV) hydroxide, 99%+ Cas 14475-63-9 - used for other zirconium products intermediates. Z 1372 (OTTO) Zirconium(IV) hydroxide, 99%+ Cas 14475-63-9 - used as in intermediate for the manufacture of zirconium compounds. Z 1372 (OTTO) Zirconium(IV) hydroxide, 99%+ Cas 14475-63-9 - used in pigments, glass and dyes.