Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Remarkable physical-chemical properties of sodium phenoxyacetate:

- Molecular weight: 174.1

- Sodium phenoxyacetate is a solid with a melting temperature of 266.6 °C.

- Sodium phenoxyacetate decomposed during and immediately after melting.

- The relative density is 1.4975 at 20 °C.

- The median particle size of sodium phenoxyacetate is 31.4 µm.

- The calculated vapour pressure is very low: 1.57*10-8 Pa at 25 °C.

- The log of the n-octanol/water partition coefficient is very low: -2.48.

- The water solubility is high: 223.6 g/L at 20.0 °C.

- Surface tension of water is not affected: 72.35 mN/m at 20.0 °C.

- The pKa of 3.17 is adopted from that of the free acid.

- Sodium phenoxyacetate has no dangerous physical-chemical properties.

Additional information