Materials and Construction
Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of

Lead lined mild steel
Aluminium
Rubber lined mild steel
Cast iron

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Materials and Construction
Zinc is not used

For producing zinc base die casting alloys
As an alloying element in various bronzes
As anode for corrosion prevention in boiler
In its oxide form as pigments

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