Bithional is used as

Bithional is added to soap as an additive to function as a/an :

Bithional is added to soaps to impart them ............. properties.

Bithional is added to soaps to impart them ………..properties.

(A): Bithional is added to soap for its beautification and solidification. (R): Bithionol is a sulphadrug.