Hi Shweta,

The formula of calgon is Na2 [Na4(PO3 )6]. Calgon is a trade name of a complex salt- sodium hexametaphosphate. It is used for removal of hardness of water.

Hope this helps.. Free feel to ask your queries..

Good luck

Hello!

The formula of calgon is

Na2[Na4(PO3)6].

Calgon is a trade name of a complex salt sodium hexametaphosphate. Its formula is (NaPO3)6.

Calgon method is used to remove the hardness from water.

Thankyou!.

Hope this will be helpful for you!