Heptyl paraben

HeP; p-Hydroxybenzoic acid heptyl ester; formula: C₁₄H₂₀O₃; CAS Registry Number: 1085-12-7

The application of heptyl paraben (HeP) as a preservative in cosmetics and food is prohibited in the European Union (EU) since 2014.

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Specimen

Students

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

Sampling sites (humans)

4 university cities as sampling areas.
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Sampling period

1995 - 2012