Zinc Oxide Formula : ZnO

Zinc oxide grades : indirect process zinc oxide, direct process zinc oxide, calcined zinc oxide, feed grade zinc oxide, pharmaceutic zinc oxide, nanometer zinc oxide, etc.
property: white powder, odourless, relative density 5.606, stable under normal temperature. Insoluble in water and alcohol, soluble in acid, alkaki and amkonium solution.
usage: used in rubber, dope cable, porcelain enamel, oil, pottery and porcelain, glass and other chemical industry.
packing: 25 kgs/bag
direct process zinc oxide quality meet standard of gb/t3494-1996
item/parameter standard
zinc oxide (in accordance with dry materials) % ≥ zno 99.5% zno 99% zno 98% zno 95% zno 90%
lead oxide (pbo)% ≤ 0.12 0.2 1.0 3.0 4.0
cadmium oxide (cdo) % ≤ 0.02 0.05 -- -- --
cupric oxide (cuo) % ≤ 0.006 -- -- -- --
manganese (mn) % ≤ 0.0002 -- -- -- --
metallic zinc (in accordance with zn) % none none -- -- --
muriatic acid insoluble substance % ≤ 0.03 0.04 0.5 0.7 2.0
loss on ignition % ≤ 0.4 0.6 0.7 1.0 5.0
water soluble substance % ≤ 0.4 0.6 0.7 1.0 3.0
sieve residue (45um mesh ) % ≤ 0.28 0.32 0.5 0.5 0.5
volatile % ≤ 0.4 0.4 0.5 0.5 0.5