It is also used in insecticides, hair dyes and as an anti-knocking additive for petrol. But all these are banned by the government as Lead metal is known for detrimental to health.
  
In some nuclear reactors sodium is used as a heat exchanger.
Compound of Sodium metals called Salt (Sodium chloride) is used in Food.
  
Industrial Uses
Chemical Industry, Electrical Industry, Electronic Industry
  
Electrical Industry, Electronic Industry