Chemical Family
Sorted by lowest NOAEL first
Parabens NOAEL Comparison
This page compares public raw NOAEL endpoint rows for Methylparaben, Ethylparaben, Propylparaben, Butylparaben, Isopropylparaben, Isobutylparaben. Values are pulled from noael_studies_public with NOAEL endpoint, mg/kg-family unit, and non-threshold qualifier filters.
Substances
6
With NOAEL Rows
4
Unique Sources
5
Lowest Indexed NOAEL
0.105 mg/kg bw/day
Methylparaben
Compare Families
Source Agreement Highlights
Methylparaben
Wide disagreement
Highest indexed NOAEL is 11,238.0952x the lowest.
SCCS Opinion, CIR Safety Assessment, COSMOS DB, ECHA
Propylparaben
Wide disagreement
Highest indexed NOAEL is 2,850x the lowest.
SCCS Opinion, ECHA, COSMOS DB
| Substance | CAS | Lowest NOAEL | Highest NOAEL | # Studies | EU Status | Sources |
|---|---|---|---|---|---|---|
| Methylparaben | 99-76-3 | 0.105 mg/kg bw/day | 1,180 mg/kg bw/day | 58 | restricted; max 0.4% (as acid); mixture cap all parabens 0.8% | SCCS Opinion, CIR Safety Assessment, COSMOS DB +1 more
Wide disagreement |
| Propylparaben | 94-13-3 | 2 mg/kg/day | 5,700 mg/kg bw/day | 76 | restricted; max 0.14% (as acid) | SCCS Opinion, ECHA, COSMOS DB
Wide disagreement |
| Butylparaben | 94-26-8 | 2 mg/kg bw/day | 1,504 mg/kg bw/day | 120 | restricted; max 0.14% (as acid) | SCCS Opinion
Single source |
| Ethylparaben | 120-47-8 | 1,030 mg/kg bw/day | 1,030 mg/kg bw/day | 2 | restricted; max 0.4% single ester; 0.8% mixture of esters (sum of methyl+ethyl+propyl+butylparaben) | EFSA
Single source |
| Isopropylparaben | 4191-73-5 | - | - | 0 | prohibited | -
No NOAEL rows |
| Isobutylparaben | 4247-02-3 | - | - | 0 | prohibited | -
No NOAEL rows |