This information is based on our present state of knowledge and is intended to provide general notes on our products and their uses. It should not be construed as guaranteeing specific properties or suitability for a particular application
LITHOPONE 30% DS pigment is an organically coated white pigment based on co-precipitated zinc sulfide/barium sulfate. No inorganic surface treatment has been applied, helping reduce volatiles and lacing in plastic applications. The product is chemically resistant in the pH range between 4 and 12 and has excellent dispersibility.
LITHOPONE 30% DS pigment has a refractive index of 1.86, high brightness, and a neutral hue. Low absorption in the near UV range helps increase compatibility with optical brighteners compared to other inorganic white pigments.
Property | Value | Unit |
---|---|---|
ZnS content | Approx. 30 | % |
BaSO4 content | Approx. 70 | % |
Organic treatment | Present | – |
Brightness L* (powder) | Approx. 98 | – |
Average particle size | Bimodal: Ca. 0.3μm of ZnS, Ca. 1μm of BaSO4 | µm |
45 μm sieve residue | ≤0.004 | % |
pH | Approx. 8 | – |
Specific gravity | Approx. 4.3 | g/cm³ |
Specific surface area | <5 | m²/g |
C.A.S No. | ZnS: 1314-98-3, BaSO4: 7727-43-7 | – |
Rel. lightening power | Approx. 125 | Reference pigment = 100; PVC = 17% |
Hardness (Mohs) | 3 | – |
As with all fine powders, handling zinc sulfide pigments can generate airborne dust. Good industrial hygiene practices should be observed to avoid the generation and subsequent inhalation of dust. For more information, refer to the material safety data sheet.
Keep the product unstacked in dry and closed rooms at normal temperature and air humidity. To achieve the best possible results, store under these conditions and use within 12 months from delivery.