Butylparaben; butyl 4-hydroxybenzoate

CAS Number
Butylparaben; butyl 4-hydroxybenzoate
SIN Groups
Reason for inclusion on the SIN List
Butylparaben is an endocrine disruptor with estrogenic and antiandrogen activity, affecting sperm function and reproductive organs among others. The substance has been detected in human urine and indoor air. It is categorized as an endocrine disruptor in the EU Commission Database.
Date for inclusion on the SIN List
2011 May
Hazard class and category code(s)
Source: ECHA
No harmonized CLP classification

Chemical information

butyl 4-hydroxybenzoate; n-butyl p-hydroxybenzoate
EC number
(Bio)monitoring data
Yes, Butylparaben has been found in indoor air and house dust.
Possible uses
Source: DHI 2006; http://ntp.niehs.nih.gov/ntp/htdocs/Chem_Background/ExSumPdf/Butylparaben.pdf 
Antiseptic creams, foods, pharmaceutical, cosmetic formulations, household products, fragrance powders, dusting and talcum, sunscreens, artificial tanning products, hair spray, lotion, skin toner, resurfacing peel system, body wash, body moisturizer, and lice repellent, fragrance/perfume , lipsticks, mascara, make-up, bath oils, tablets, and salts.
Technical function of substances
Source: DHI 2006; http://ntp.niehs.nih.gov/ntp/htdocs/Chem_Background/ExSumPdf/Butylparaben.pdf 
Antifungal agent, preservative, antibacterial.


Company Group
Company Name

Clariant Produkte (Deutschland) GmbH, Am Unisys-Park 1 65843 Sulzbach am Taunus Germany , , Germany

Clariant Produkte (Deutschland) GmbH , Am Unisys-Park 1 65843 Sulzbach am Taunus Germany, , Germany


knoell Germany - OR - E9, Konrad-Zuse-Ring 25 68163 Mannheim Germany , , Germany

Source: ECHA