Zinc oxide (indirect method)
Other name: zinc white, lead power
M.F.: ZnO
M.W.: 81.37
Property: White hexagonal crystal or powder is non-toxic, smell-less. It's the intermediate oxide, dissolves in acid, alkali and ammonium chloride solution, does not dissolve in water and ethyl alcohol. It can absorb the carbon dioxide and the water in the air.
Heats up to 1800 ℃, it can sublime, when high temperature assumes the yellow color, when cooling gets back to the white color, because it has the alkalinity, thus may modulate the coating with the oil class, more stronger coloring strength and covering strength.
Use: In the rubber vulcanization process, and the promotion of organic, stearic acid, such as reaction time from the generation of zinc stearate, can enhance the physical properties of vulcanized rubber, is also used for natural rubber, synthetic rubber and latex curing active agent and the reinforcement of And coloring agent. Used in paint, ink, the color Qibu. Dyeing industry for printing anti-agent, used in the matches in the leather and rubber adhesive effect of increasing the acidity. Xiangpi Gao raw materials for the pharmaceutical industry. In addition, for Zinc chrome yellow paint and zinc acetate, zinc carbonate, zinc chloride, and other manufacturers, also of methanol at a catalyst, ammonia when desulfurizer, and glass and glaze used for the production, the electronics industry for the production of Pilei-film resistors and varistor production, color phosphors, magnetic materials, paper and natural gas desulfurization.
Physical and chemical index: zinc oxide (indirectly) has good reinforcement of rubber products enhance the abrasion resistance, flexibility, elongation and tear strength. Good mechanical properties: rubber products enhance the anti-aging, the degree of wear-resistant , To extend the life of rubber products.
CB/T3185-92( indirect method ZnO)
Project Quality index
BA01-05( type I) BA01-05( typeII)
Top product Grade A Qualitied Top product Grade A Qualitied
Znic oxide ( dry )%> 99.7 99.5 99.4 99.7 99.5 99.4
Metal project (Zn)%< none none 0.008 none none 0.008
Lead oxide (Pb)%< 0.037 0.05 0.14
manganese oxide(Mn)%< 0.0001 0.0001 0.0003
Cooper oxide (Cn)%< 0.0002 0.0004 0.0007
Manganese oxides,%< 0.06 0.008 0.05
ignition loss,%< 0.2 0.2 0.2
screen floating(45um),%< 0.1 0.15 0.2 0.10 0.10 0.15
Water soluble matter,%< 0.10 0.10 0.15 0.10 0.10 0.15
105°C ,volatile,%< 0.3 0.4 0.5 0.3 0.4 0.5
Oil absorption,g/100g<       14 14 14
(compared with standard)
      Approximation Miniature Miniature
Reducing power
(compared with standard )
      100 95 90
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