Functional Materials

Ultrafine Particle Size Zinc Oxide, FZO

ISK has developed ultrafine zinc oxide, FZO-50, in addition to ultrafine titanium dioxide.
FZO-50 is superior in UV-A shielding, whereas ultrafine titanium dioxide is superior in UV-B shielding.
FZO-50 shows anti-bacterial and deodorizing effects as conventional zinc oxide does.
FZO-50 can be utilized in various applications such as cosmetics, films and coatings.


  1. Strength 1
    ISK’s proprietary atomization technology achieves transparent and excellent ultraviolet (UV-A) shielding.
  2. Strength 2
    ISK delivers products of stable quality using manufacturing technology that the company has developed over many years.

Typical Applications

  • Cosmetics
  • Industrial films
  • Paint

Basic Properties of FZO-50(Typical value)

Grade Name FZO-50
ZnO(%) 98.3
Specific Surface Area(m2/g) 49.6
Bulk Density(g/ml) 0.17
Oil Absorption(g/100g) 32
Primary Particle Size(µm) 0.021
Figure.1: Electron micrograph of FZO-50Fig.1 Electron micrograph of FZO-50(× 100,000)
Figure.2: Transmittance Curve for FZO-50Fig.2 Transmittance Curve for FZO-50
(Mixed with Liquid Paraffin/Petrolatum/Stearic Acid)
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