Customization: | Available |
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CAS No.: | 1345-05-7 |
Formula: | Zns Baso4 |
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Lithopone
Lithopone is a remarkably adaptable white pigment celebrated for its outstanding opacity. Crafted from barium sulfate (BaSO4) and zinc sulfide (ZnS) in a precise 70:30 blend, this economically favorable pigment harmonizes moderate brightness with superior hiding power. It masterfully occupies the space between ordinary zinc oxide and premium titanium dioxide. Its distinct chemically co-precipitated structure guarantees uniform particle distribution, making it the perfect selection for uses where ultimate durability isn't the top priority.
Property
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Specification
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Test Method
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Grade Variations
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ZnS Content (%)
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28-30
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ISO 787-14
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High-ZnS Grade: 30-32%
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Density (g/cm³)
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4.2-4.3
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ASTM D1895
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Low-Density: 4.0 (Modified)
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Refractive Index
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1.84
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ASTM E1967
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-
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Whiteness (%)
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90-95 (CIE Lab)
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ISO 2470
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Enhanced Whiteness: 96%+
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Oil Absorption (g/100g)
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12-18
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ASTM D281
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Low-Oil: ≤10 (Surface Treated)
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pH Value
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6.5-8.5
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ISO 787-9
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Neutral Grade: 7.0±0.5
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Moisture Content (%)
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≤0.3
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ISO 787-2
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Ultra-Dry: ≤0.1%
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Residue (325 Mesh, %)
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≤0.1
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ASTM D185
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Superfine: ≤0.05%
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Acid Resistance
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Poor (ZnS reacts)
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DIN 53775
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Stabilized Grade (Limited Use)
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Weather Resistance
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Moderate (Indoor)
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ASTM G154
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-
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