Litmus paper is defined as the paper which is used as an indicator. It helps us to find out whether the solution is acidic or basic in nature. There are 2 types of litmus paper:
<u>Red litmus paper:</u> This paper turns blue, when it is dipped in basic solution and remains as such when it is dipped in acidic solution.
<u>Blue litmus paper:</u> This paper turns red, when it is dipped in acidic solution and remains as such when it is dipped in basic solution.
As, the compound is turning litmus solution blue, thus, it will be a base and base is also found in soaps and detergents.