SACHTOLITH HD-S (CAS:1314-98-3 )

SACHTOLITH® HD-S is a white pigment  based on synthetic zinc sulfide obtained  from highly purified solutions. The product  is chemically resistant on the pH range  between 4 and 12. It has a refractive index of 2.37 (of ZnS), high  brightness and neutral hue. Low absorption in  the near UV range helps increase compatibility  with optical brighteners than other inorganic  white pigments. 

SACHTOLITH® HD-S is suitable for abrasion sensitive coating, ink, plastic,  paper formulations and mechanical properties  are retained in glass-fiber-reinforced plastics. 

The Benefits of the Product Include: 

– 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) helps reduce cylinder and doctor blade wear 

– UV cured systems can 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 which can help protect polymers against thermal degradation

Typical Properties

 ZnS content Approx. 98% 

Organic treatment :Present 

Brightness L* (powder) Approx. 97

Crystal size [μm] Approx. 0.3 

45 μm sieve residue [%] ≤0.004 

pH Approx. 7 

Specific gravity [g/cm3] Approx. 4.0 

Specific surface area [m2 /g] Approx. 8 

C.A.S No. 1314-98-3 

Rel. scattering power (Reference pigment TiO2  = 100

PVC = 17%) Approx. 56 

Hardness (Mohs) 3

Safety, Health and Environment  

As for all fine powders, the handling of titanium  dioxide pigments can give rise to airborne dust. Good  industrial hygiene practice should be observed so as  to avoid the generation and subsequent inhalation of  dust. For more information refer to our material safety  data sheet. 

Storage 

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