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Zirconium Oxychloride (ZOC)

CAS Number: 7699-43-6
Chemical formula: ZrOCl2.8H2O
Used in TiO2 coating and in the manufacture of other zirconium chemicals.

Zirconium Oxychloride (ZOC) is used as a source of zirconium to coat TiO2 particles. This enables the surface of the particle to reflect rather than absorb UV light which reduces the yellowing effect of sunlight.

Zirconium Oxychloride (ZOC) is a white crystalline powder with a slight hydrochloric acid odour.

Typical Chemical Analysis

ZrO2 + HfO2*     36% min
Fe2O3                   10 ppm max
TiO2                      10 ppm max
SiO2                      30 ppm max
NaO2                    30 ppm max

*HfO2 accounts for approximately 2wt% of this total.


25 kg bags
1000 kg bulk bags