Zinc Oxide USP

Zinc oxide USP is a white powder, odorless, tasteless , gritless , dry powder known as zinc white or as the mineral zincite with chemical formula ZnO. It is the highest quality and high purity zinc metal under controlled condition. USP grade are avaible in three forms:
USP-1
USP-2
USP-3

Chemical
ZnO (Dry Basis), % 99.9
PbO, % 0.001
CdO, % 0.001
As2O3, % <0.00003
SO3, % 0.001
Insoluble in HCL, % <0.01
H2O Soluble Salts, % 0.02
Physical
Surface Area, m2/g 3.20
Mean Particle Size, µ 0.33
Specific Gravity, g/m l5.61
Apparent Density 340
Passing 325 mesh, % 99.99
Oil Absorption, gms/100gms 12

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