1.Properties :
Chemical Name : Zinc Oxide 
Synonyms : Zinc Oxide Powder, Zinc White, Flowers of Zinc
Molecular Formula : ZnO 
Mlolecular Weight :81.38
Specific Gravity : 5.606(real); 1.2(bulk) 
Melting Point : 1976℃
Boiling Point : Sublimation at 1800℃ 
Heat of Formation : -83.24 Kcal/mol
Free Energy of Formation: -76.08 Kcal/mol 
Melting Heat : 4470Kcal/mol
physical Properties :Yellowish-white or slightly yellow powder

Name	Index
	Type 1			Type 2	Type 3
	High Grade	First Grade	Qualified
Appearance	Yellowish-white or slightly yellow powder
Zinc Oxide(on dry basis) %≥	99.7	99.5	99.0	98.0	95.0
PbO(as per Pb) %≤	0.037	0.05	0.15	-	-
CdO(as per Cd) %≤	0.005	0.02	0.04	-	-
CuO(as per Cu) %≤	0.0002	0.006	-	-	-
Oxide of Manganese (as per Mn) %≤	0.0003	0.0005	-	-	-
Arsenic %≤	-	-	-	-	-
Metallic Matters (as per Zn) %≤	-	-	0.008	-	-
Ignition on Decrement %≤	0.2	0.4	0.6	-	-
Hydrochloric acid insolubles %≤	0.03	0.05	0.08	-	-
Water solubles %≤	0.1	0.4	0.7	0.7	-
Moisture %≤	0.3	0.4	0.4	0.4	-
Residue on sieve 45um (wet sieving) %≤	0.1	0.28	0.35	0.5	-
Residue on sieve 154um(dry sieving) %≤	-	-	-	-	-

 

3.Applications:  It is most suitable to be used for the manufacture of high grade ceramics, salt-glazed brick,mosaic,porcelain and porcelain enamel ware for sanitation and bath uses.Especially suitable to be used for glaze-making, as flux in glassmaking, also as active agent for rubber production , furthermore, as raw material for the manufacture of black or dark-colored rubber tyre, rubber wire and isolate articales, etc.

4.Packing:  In PVC thin-film bag-lined plastic woven bags ,net weight 25kg each.

5.Cautions for transportions and storage:  Should be stored in a dry place. Don’t to let it be rained on and don’t get in touch with acid. No presence of acidic vapour in storeroom is allowed.