Anti-Corrosive Pigments

Zinc Phosphate

Molecular Formula

» Zn3(PO4)2.4H20


» Material for anti-corrosion paint used in containers, ship and steel structures
» Material for electric components

Characteristics and Capacity

White Powder
Corrosion of a metal surface is due to its reaction with surrounding oxidants, such as air, water and carbon dioxide. Zinc phosphate helps the formation of passivation layer on the metal surface to be protected.
Production Capacity: 180 MT/month

Product Profile

Coatings grade: zinc phosphate with d(0.5) within 9 ~ 12 μm.

Electronics grade: zinc phosphate with d(0.5) within 14 ~ 20 μm

Other grades: upon customers’ request, zinc phosphates with other particle size can be produced


TEST ITEM UNIT Coatings Grade Electronics Grade
Appearance - White powder White powder
ZnO wt.% Min. 53.0 56±2
P2O5 wt.% Min. 31.0 32±1
Pb wt.% Max. 0.05 Max. 0.01
Cd wt.% Max. 0.01 Max. 0.01
Sieve residue (+325 mesh) wt.% Max. 0.1 Max. 0.1
Free moisture wt.% Max. 2.0 Max. 2.0
Specific gravity - 3.0 ~ 3.6 3.0 ~ 3.6

Special anti-corrosion coating grade with Pb < 100 ppm can be supplied upon request.


Product Unit Weight Package
   Zinc phosphate    20 kg   300 kg, 400 kg, 500 kg
   PP bag, Paper bag   PP bag