ZINC DUST
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⊡ Molecular formula, Reaction formula

⦁ Zn

⊡ CAS No

⦁ 7440-66-6

⊡ Characteristics

⦁ Gray Powder
⦁ Molecular weight : 65.38
⦁ Gravity : 7.14
⦁ Specific gravity : (g/cc) : 2.8 - 3.2
⦁ PH : 6.95 - 7.37
⦁ Melting point : 419c
⦁ Boiling point : 907c
⦁ Solubility : Soluble in acid, alkali, Insoluble in water
⦁ It protects the inside by making the film of basic carbonate out of the air
⦁ It generates ZnO and H2 by reacting slowly to moisture

⊡ Application
Anti-rust paints
⦁ Zinc has excellent anti-rust quality and so, it is used for painting the surface of metal structures such as vessel, container after making paints which mixed zinc-dust with binder resin
Substitution agent
⦁ It is added to substitute, precipitate, clear the impurity when silver or zinc is smelted
⦁ It is used for substitution agent to clear the heavy metal such as Fe, Mn, Cu when sewage treatment
Reducing agent
⦁ It is used for the reducing agent to combine oxygen in organic reaction, the intermediate of dye stuff
Other Use
⦁ Medicine, Paints etc

⊡ General Specification
Grade EMP UMP SMP SP
Total Zinc(%) 99.0 Min 99.0 Min 99.0 Min 99.0 Min
Metallic Zinc(%) 96.0 Min 96.0 Min 96.0 Min 96.0 Min
Zinc Oxide(%) 4.0 Max 4.0 Max 4.0 Max 4.0 Max
Lead(%) 0.2 Max 0.2 Max 0.2 Max 0.2 Max
Cadmium(%) 0.1 Max 0.1 Max 0.1 Max 0.1 Max
Iron(%) 0.05 Max 0.05 Max 0.05 Max 0.05 Max
325 Mesh(44um +)% 0.02 Max 0.02 Max 0.03 Max 0.5 Max
Mean Partical Size(um) 2.5-3.5 3.5-4.5 4.5-5.5 6-12

⊡ Packing Unit
Classification Unit Weight Packing Style
Zinc Dust 20-50kg Can
100kg, 400kg Drum
500kg, 600kg, 1000kg PP Woven Bag