We supply several anti-corrosive pigments for use in the paints and coatings industry, including Zinc Phosphate, Strontium Chromate, Zinc Chromate, and Zinc Tetroxy Chromate. See below for specifications.
|
Loss On Ignition
|
8.5 – 10%
|
|
Water Solubles
|
0.5% Maximum |
|
Zinc Content on Ignited Basis
|
50.5 – 51.5% |
|
PO4 (calcinated basis)
|
47.5 – 50% |
|
Moisture
|
0.5% Maximum |
Strontium Chromate Specifications
|
Chromic Anhydride
|
46% Minimum
|
|
Strontium Oxide
|
48% Minimum |
|
Oil Absorption
|
25 – 35 |
|
Residue on 43 Mircon Sieve
|
0.5% Maximum |
|
Conductivity (milimho/cm)
|
1.3 Maximum |
Zinc Chromate Specifications
|
Volatile Matter
|
1% Maximum
|
|
Water Solubles
|
0.5% Maximum |
|
Chromic Anhydride
|
43% Minimum |
|
Total Zinc
|
36.5 – 40% |
|
Alkali Metal Content
|
10 – 12% |
|
Chlorides
|
0.1% Maximum |
|
Sulphates
|
0.1% Maximum |
|
Nitrates
|
0.1% Maximum |
|
Water Soluble Chromate
|
0.25 – 0.50% |
Zinc Tetroxy Chromate Specifications
|
Zinc Oxide Content (ZnO)
|
68% |
|
Chromium Oxide (CrO3)
|
17% |
|
Sulphates (SO4)
|
0.1% Maximum |
|
Chlorides (Cl)
|
0.05% Maximum |
|
Nitrates (NO3)
|
0.05% Maximum |
|
Water Solubles
|
0.05% Maximum |