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Zinc Oxide

Molecular Formula: ZnO
Molecular Weight: 81.38
CAS NO.: 1314-13-2
Properties:White powder, innocuous, odorless, stable under normal temperature. soluble in acid, alkali and ammonium chloride solution, insoluble in water and alcohol.
Zinc Oxide 99.7% Industry Grade:
ZnO(dry):99.7% min.              
Pb: 0.037% max.
Mn: 0.0001max
Cu: 0.0002max
Insoluble in HCl: 0.006% max.
L.O.I.: 0.2% max.
Screen residues(through 45 micron wet screen): 0.1 max.
volatile( 105 ℃): 0.3 max.
Accelerator activator, pigment, and reinforcing agent in rubber; ointment; pigment and mold growth inhibitor in paints; ceramics; floor tile; glass; zinc salts (zinc stearate etc.) feed additive; semi-conductor in electronic devices; electronic ceramics, raw material to produce zinc phosphate as steel coating.
Zinc Oxide Direct Method 99.5%:
The product is white fine powder and can slowly absorb the water in the air.
 Item                                                         rubber                    paint
Zinc oxide:                                                99.5min.                99.5min.    
Lead oxide(PbO):                                      0.12max.                   --
Cadmium oxide (CdO):                             0.02max.                   --
Copper Oxide(CuO):                                 0.006max.                 --
Mangaese(Mn):                                         0.0002max.              --
Metallic metals(as Zn):                                None                      None
Insolubles in HCL solution:                        0.03max.                  --
Losses on ignition:                                    0.4max.                  0.4max.      
Soluble matters in water:                          0.4max.                 0.4max.     
Screening residues(45µm wet screen):     0.28max.               0.28max.     
105 degree moisture:                               0.4max                   0.4max.       
Hiding power(g/m2):                                                              150max.      
Oil absorption,(g/100g):                                                         18max.      
Colour killing:                                                                         100max.
Zinc Oxide feed grade:
Zinc Oxide(as Zn):75% min.                 
Pb: 0.005% max.
Cd:0.0035% max.                          
As:0.0025% max.
Finenese(Through 150µm screen): 95% max.
Zinc Oxide Pharmaceutical Grade(USP23):99~100.5%
Zinc Oxide Pharmaceutical Grade(BP98):99~100.5%

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