iso-butyl paraben

iBuP; p-Hydroxybenzoic acid isobutyl ester; formula: C11H14O3; CAS Registry Number: 4247-02-3

The application of iso-butyl paraben (iBuP) as a preservative in cosmetics and food is prohibited in the European Union (EU) since 2014.


  • Student groups with an even number of female and male students at the age of 20 to 29.

Sampling area

Sampling period

1995 - 2012