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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 Octylphenol, para-tert.
State of the substance white solid, phenolic odour 
Melting/ Freezing point 85 °C
Boiling point 289 °C
Bulk density 0.374 g/cm³ at 22 °C 
Vapour pressure


Surface tension waiving: based on structure (surface activity is not expected)
Water solubility 7.0 mg/L at 25 °C, pH 6 - 7 
Partition coefficient, logPow

4.8 at 22 °C, pH 6.6

Flash point waiving: not required for solids 

not flammable

Explosive properties

waiving: based on consideration of the structure

Ignition temperature waiving: not required for solids with a melting point < 160 °C 
Oxidizing Properties waiving: based on consideration of the structure 
Granulometry waiving: the substance is marketed as flaked 
Viscosity (dynamic) waiving: not required for solids

 Stability in organic solvents

 statement: stable in organic solvents
 Dissociation constant  10.25, pH range: 5-9