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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Dissociation constant

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Administrative data

Link to relevant study record(s)

Description of key information

Glycol ethers are not considered to have a pH. Glycol ethers are extremely weak acids, with pKa values typically of 16-18. The pH is defined as the –log of the hydrogen concentration. The pH-value is usually only relevant for aqueous solutions. In the case of glycol ethers being very weak acids, there is very little hydrogen ion dissociated. In addition there is almost no water present in the glycol ether. Thus dissociation does not occur. 

Key value for chemical safety assessment

Additional information