Zinc Oxide Production

Hazardous incidents

currently no warning according to StIV


About Us

Since 1969 we have been producing Zinc Oxide of best quality.
Our standard assortment contains three varieties of Zinc Oxide, but as a family-owned company, we can offer a highly personalised service tailored to meet your individual requirements.
Our product stands out of competitive brands because of its higher level of flowability. This ease of flow prevents blockage of in-plant transportation pipes.
It is our utmost concern that the production is most environmentally sustainable, and we are always aiming at 100% security of supply, including reliability and the adherence of delivery dates.
In order to maintain the striking quality of our Zinc Oxide we are ISO 9001 and ISO 14001-certified, and REACH registered.

For more information about our product or services, please contact us.

ISO Certificates

ISO 14001 Certificate
ISO 14001 Certificate


Main characteristic for all products: higher flowability

general specifications
%ZnO min 99,5 99,8 99,8
%Cu max. 0,001 0,0005 0,0001
%Cd max. 0,03 0,003 0,005
%Fe max. 0,01 0,005 0,0002
%Mn max. 0,001 0,0005 0,0001
%Pb max. 0,2 0,005 0,0015
%sieve residue max. 0,05 0,03 0,02
m²/g surf. 4,0 - 6,0 5,5 - 6,5 8,0 - 10,0
Paper Bags


Paper Bags ZnO Zinc Oxide
Big Bags

~ 400 - 1.000 kg

Big Bags ZnO Zinc Oxide
Silo / Bulk

~ 24.000kg

Silo ZnO Zinc Oxide


We are processing any zinc containing rawmaterial in our production. Please contact us.


Johann & Ingrid Wiehart


Johannes Wiehart

Chief Engineer

Harald Wiehart

Chief Operating Officer

Dr. Barbara Berger-Wiehart

Chief Financial Officer

Sonja Nekolny

Customer Service

Benjamin Berger



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Schottenfeldgasse 82/9
A - 1070 Wien
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P: +43 1 523 8366

Pernhofen 5
A - 2064 Wulzeshofen
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P: +43 2527 4050