Sachtolith HD S

SACHTOLITH® HD-S is a white pigment based on synthetic zinc sulfide obtained from highly purified solutions. The product is chemically resistant in the pH range between 4 and 12. It has a refractive index of 2.37 (of ZnS), 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. SACHTOLITH® HD-S is suitable for abrasion-sensitive coatings, inks, plastics, and paper formulations, while mechanical properties are retained in glass-fiber-reinforced plastics.

• Retention of mechanical properties in glass-fiber-reinforced plastics
• Very good compatibility with optical brighteners
• Low abrasiveness (due to ZnS-based low Mohs hardness of ca. 3), reducing cylinder and doctor blade wear
• UV-cured systems benefit from complete through-cure, good adhesion, reduced energy uptake, and less photo initiator
• Low binder demand allows formulators to adjust the viscosity of the coating
• Relatively high thermal conductivity when used in polyolefins, protecting polymers against thermal degradation

Keep the product unstacked in dry and closed rooms at normal temperature and air humidity. To achieve the best possible results, storage under the stated conditions is recommended, and use within 12 months from delivery.

As with all fine powders, the handling of titanium dioxide pigments can give rise to 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.