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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Link to relevant study record(s)

Description of key information

When male human volunteers were given an oral dose of 50 mg tert-butyl-4-methoxyphenol (BHA), 27-77% was excreted in the urine as the glucuronide and urinary metabolites.

Key value for chemical safety assessment

Bioaccumulation potential:
no bioaccumulation potential
Absorption rate - dermal (%):
0.004

Additional information

When male volunteers were given an oral dose of 50 mg BHA, tert-butyl-4-methoxyphenol is absorbed from digestive tract and further distributred in the body. it was found that, 27-77% was excreted in the urine as the glucuronide and urinary metabolites. Urinary excretion of BHA was maximal within 17 hr and complete by 48 hr. When human volunteers were given a single oral dose of 14(C)-labelled BHA (approx 0.5 mg/kg bw), 60-70% of the radioactivity was excreted in the urine within 2 days and 80-86.5% by day 11.