Zinc oxide

Zinc oxide is used in the making of coating as pigment, such as primer and antirust paint, the dosage is 30%.

coating Zinc oxide is used in the making of coating as pigment, such as primer and antirust paint, the dosage is 30%.

Properties:

Molecular formula: ZnO Molecular weight : 81.39 white /slight yellow fine powder , specific gravity 5.5-6.5 , granularity 0.15-0.7um ), refractive index is 1.95-2.05 , specific heat in 20 °C 0.0915 ka. /g. °C, melting point 1973 °C, Zinc oxide evaporates in 1000 °C .

Standard: HHXPQB-YHX ( TL )-2005

Technical index :

Item	coating
	1 #	2 #	3 #
Zinc oxide ( ZnO ),% ≥	98.0-99.0	95.0-97.0	90.0-93.0
Metallic matter ( Zn ),% ≤	NA	-	-
Loss on ignition ,% ≤	0.6-0.8	1.0-2.0	—
Residue on screen( wet 100 mesh ) , % ≤	0.3-0.5	1.0-1.5	2.0-3.0
Water soluble salt ,% ≤	0.8-1.0	1.2-1.5	2.0-2.5
Valatile matter on 105 °C , % ≤	0.4-0.6	1.0-1.2	1.5-2.0
OIl adsorption, g/100g ,% ≤	20	25	35
Decolor power (compared with sample ),% ≥	95-100	90-95	85-90
Color(compared with sample)	in accordance with sample

Zinc oxide