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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Potassium hydroxide is a strong alkaline substance that dissociates completely in water to K+ and OH-.

K+ concentration in rivers, worldwide: 5 mg/l; > 12 mg/l downstream of potash mines.

Monitoring values worldwide: pH annual average 6.5 - 8.3; global median value 7.7.

No strong variability at individual stations.