Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 202-679-0 | CAS number: 98-54-4
Endpoint summary
Administrative data
Description of key information
Additional information
| Substance Endpoint | 4-tert-Butylphenol |
| State of the substance | solid, white, phenolic |
| Melting/ Freezing point | 99.2 °C |
| Boiling point | 238 °C at approx. 101 kPa |
| Relative density | Bulk density: 0.382 g/cm³ at 22 °C |
| Vapour pressure | 0.5 Pa at 20 °C |
| Surface tension | Waiving: based on structure (surface activity is not expected) |
| Water solubility | 607.2 mg/L at 25 °C, pH 6 - 7 |
| Partition coefficient, logPow | 3.0 at 23 °C, pH 5.7 |
| Flash point | Waiving: substance is a solid at room temperature |
| Flammability | no flammable (burning time: 93 s) |
| Explosive properties | Waiving: based on experience and on consideration of the structure |
| Ignition temperature | Waiving: substance is a solid with a melting point < 160 °C |
| Oxidizing Properties | Waiving: based on experience and on consideration of the structure |
| Granulometry | Waiving: substance is marketed as flakes, there are virtually no particles below 100 µm |
| Dissociation Constant | 10.25 at 20 °C |
| Viscosity at 20 °C | Waiving: substance is a solid |
| Stability in organic solvents | Statement: stable in organic solvents |
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