Question

Compound which is added to soap to impart antiseptic properties is ___.

• A. Sodium laurylsulphate
• B. Rosin
• C. Sodium dodecylbenzenesulphonate
• D. Bithional

Answer 1

The correct option is D Bithional

Analysing the options:

Option (A):
Sodium laurylsulphate is an anionic detergent.
It is found in many personal care products such as soaps, shampoos, toothpaste, etc.

$C{H}_3(C{H}_2{)}_{10}C{H}_{2}OS{O}_3^{-}N{a}^{+}$
Sodium laurylsulphate

Option (B):
Sodium dodecylbenzenesulphonate is an anionic detergent.
It is used as a detergent in cleaning products and pesticides.

Sodium dodecylbenzenesulphonate


Option (C):
Rosin is a solid form of resin obtained from pines and some other plants. Its structure is a complex mixture of various rosin acids.
Rosin and its chemical derivatives are used chiefly to make soaps, varnishes, sealing wax, printing inks, driers, sizes for paper, adhesives, binders, soldering fluxes, gloss oils for paints.



Option (D):
All soaps are made by boiling fats or oils (triglycerides) with suitable hydroxides. This process is known as saponification. Variations are made by adding different raw materials.
Bithionol has antiseptic properties. It is added to soaps to impart antiseptic properties to soap.



So, option (D) is the correct answer.