SAKAI CHEMICAL INDUSTRY CO., LTD.

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ZINC OXIDE

We are supplying superior quality products backed by our wealth of accumulated expertise and
technologies.

We have been manufacturing zinc oxide since the company was founded. Zinc oxide is made from high purity electrolytic zinc, so it can be used in a wide range of applications from rubber and paints to plastics, electronic materials and cosmetics. In addition, our products have a great reputation for performance, such as
ultrafine products used as UV shielding agents in sun care cosmetics and large particle products used as heat-dissipation fillers in electronic parts.

Sakai Chemical Group’s Strengths

We offer a broad product lineup from nanosize particles to large particles.
Our technology of surface treatments provides higher dispersivity and other special functions.

PRODUCT LIST

General-Purpose

Our zinc oxide products are widely used in tires, rubber, paints, inks, plastics, batteries, UV absorbing fibers, UV absorbing coating agents, etc.

Properties	Grade
	Zinc Oxide No1		Zinc Oxide No.2		Zinc Oxide No.3		Zinc Oxide Superfine
	Standard	Representative analysis value	Standard	Representative analysis value	Standard	Representative analysis value	Standard	Representative analysis value
Purity (ZnO) ％	≧99.5	99.8	≧99.5	99.8	≧99.0	99.8	≧99.50	99.7
Lead (Pb) ％	≦0.005	0.001	≦0.030	0.002	≦0.3	＜0.01	≦0.030	0.001
Cadmium (Cd) ％	≦0.0020	0.0001	≦0.0100	0.0001	≦0.100	＜0.001	≦0.0100	0.0001
Loss of ignition ％	≦0.30	0.10	≦0.30	0.10	≦0.30	0.10	≦0.50	0.30
Screen residue retained(45µm)	≦0.10	0.01	≦0.10	0.01	≦0.10	0.01	≦0.20	0.01
Water-soluble component ％	≦0.10	＜0.05	≦0.10	＜0.05	≦0.50	＜0.05	≦0.10	＜0.05
Mean particle size (µm)	ー	0.75	ー	0.75	ー	0.75	≦0.30	0.28
Bulk density (g/ml)	ー	0.32	ー	0.32	ー	0.32	ー	0.27
Specific surface area (㎡/g)	ー	3.5	ー	3.5	ー	3.5	ー	11.0