Ethyl Tosylamide

What Is It?

Ethyl Tosylamide is a highly viscous, amber liquid used primarily as plasticizer and film former in coatings like nail polish. Ethyl Tosylamide also as acts as a secondary film former.

Why Is It Used?

Ethyl Tosylamide is used in low concentrations, primarily as a plasticizer. It imparts flexibility and durability to synthetic polymers such as those used in nail polish. Ethyl Tosylamide also increases the durability and improves wear of nail polish products and certain nail treatments and dries to help form a film coating that holds color to the nail plate. Ethyl Tosylamide also indirectly helps improve adhesion to the nail plate.

Scientific Facts

Ethyl Tosylamide is a mixture of isomers of toluene bound to ethanesulfonamide

Safety Information

The Food and Drug Administration (FDA) includes ethyl toluene sulfonamide (Ethyl Tosylamide) on its list of indirect food additives. It may be used in adhesives and in resinous and polymeric coatings.

In a test by the National Toxicology Program (NTP), Ethyl Tosylamide tested negative in a mutagenicity study in bacteria.…

FDA: Link to Code of Federal Regulations for ethyl-p-toluene sulfonamide (Ethyl Tosylamide) 

In Europe, Ethyl Tosylamide is considered to be a sulfonamide, and based on the prohibition of sulfonamides in cosmetics it may not be used in cosmetics and personal care products marketed in Europe.

Link to the EU Cosmetic Regulation:


Find out more about the regulation of Food Additives by the Food and Drug Administration

Food Ingredients and Packaging:

Food Contact Substances:

Substances Generally Recognized As Safe (GRAS):

Search the Code of Federal Regulations

EU Cosmetics Inventory