We offer a variety of zinc oxide grades produced by Harzer Zinkoxide GmbH (HZO). These range from the highest quality material conforming to pharmacopoeia requirements for use in pharmaceuticals to more commercial grades used mainly in the rubber industry.
HZO operations are registered to both ISO 9001 (2008) and ISO 14001 (2009).
Availaible in 25 kg paper sacks, various sizes of FIBCs, powder or pellets.
Zinc White HARZSIEGEL®
Zinc White HARZSIEGEL®
| Technical Data | ||
| ZnO | % | 99,8 |
| Pb | % | 0,005 |
| Cd | % | 0,03 |
| Cu | % | 0,0001 |
| Fe | % | 0,0005 |
| Mn | % | 0,00001 |
| pH | 8 | |
| insolubles in HCl | % | 0,05 |
| residue on sieve 32 μm | % | 0,05 |
| density | g/ml | 5,6 |
| bulk density | g/ml | 0,4 |
Qualities
Depending on the application Zinc White HARZSIEGEL® standard is available with different specific surface areas.
| Zinc White HARZSIEGEL® | UF | F | Standard | GR |
| Specific surface area m2/g | 10 | 7 | 5 | 3 |
| Loss on ignition % | 0,6 | 0,6 | 0,3 | 0,3 |
Applications
Tyre and rubber industry
Chemical industry
Glass and ceramics industry
Paints and adhesives
Electronic industry (ferrites, varistors, batteries)
Appearance
White powder
Zinc White HARZSIEGEL® Standard is also available in granulated form
Packing
25 kg paper bags (Zinc White HARZSIEGEL® Standard and GR)
20 kg paper bags (Zinc White HARZSIEGEL® UF and F)
Big Bags with different filling weights
Shelf Life
6 months – on condition that the goods are stored under proper conditions
Zinc White HARZSIEGEL® CF
Zinc White HARZSIEGEL® CF
| Technical Data | ||
| ZnO | % | 99,8 |
| Pb | % | 0,005 |
| Cd | % | 0,03 |
| Cu | % | 0,0001 |
| Fe | % | 0,0005 |
| Mn | % | 0,00001 |
| pH | 8 | |
| insolubles in HCl | % | 0,05 |
| residue on sieve 32 μm | % | 0,05 |
| density | g/ml | 5,6 |
| bulk density | g/ml | 0,4 |
Qualities
Depending on the application Zinc White HARZSIEGEL® CF is available with different specific surface areas.
| Zinc White HARZSIEGEL® | CF | CF/8 |
| Specific surface area m2/g | 5 | 8 |
| Loss on ignition % | 0,3 | 0,6 |
Applications
Pharmaceutical and cosmetics industry
Chemical industry
Electronic industry (varistors and ferrites)
Apperarance
White powder
Zinc White HARZSIEGEL® CF is also available in granulated form
Packing
25 kg paper bags (Zinc White HARZSIEGEL® CF)
20 kg paper bags (Zinc White HARZSIEGEL® CF/8)
Big Bags with different filling weights
Shelf Life
6 months – on condition that the goods are stored under proper conditions