Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Substance Endpoint 2 -tert-Butylphenol
State of the substance clear liquid with phenolic odour 
Melting/ Freezing point Pour point: < -25 °C at 101 kPa
Boiling point 223 °C at 101 kPa
Relative density 0.9811 g/mL at 20.0 °C 
Vapour pressure

0.48 mbar at 38 °C 

Surface tension Waiving: based on structure (surface activity is not expected)
Water solubility 970.7 mg/L at 25 °C, pH 6-7 
Partition coefficient, logPow

3.3 at 23 °C, pH 5.7 

Flash point 102 °C at 101.3 kPa

Waiving: The substance does not contain any chemical group which could lead to spontaneous ignition after contact with air at room temperature (20 °C). The substance is liquid and therefore the flash point is relevant.

Explosive properties

Waiving: based on consideration of the structure

Ignition temperature 360 °C 
Oxidizing Properties Waiving: based on consideration of the structure 
Granulometry Waiving: the material is a liquid
Viscosity (kinematic) 14.7 mm²/ s at 20.0 °C; 5.8 mm²/s at 40.0 °C
Stability in organic solvents  Statement: stable in organic solvents.
 Dissociation constant  pKa at 20°C: 11.09