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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

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Administrative data

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Description of key information

 The water solubility in replicate test mixtures was determined to be 18.0 ± 0.5 mg/L (mean ± 2.5 % deviation, n = 2) at 25 °C

Key value for chemical safety assessment

Water solubility:
18 mg/L
at the temperature of:
25 °C

Additional information

Two studies are available which have measured water solubility of diphenyl ether. The previously reported and accepted value of 21 mg/L(cited in U.S. EPA HPV program) is not well-documented, and the associated methods are not known. Conversely, the Key Study, showing a slightly lower value of 18 mg/L, is well-documented and conducted according to highly reliable methods which are similar to OECD Guideline 105. Therefore, the new accepted/recommended value for water solubility is 18 mg/L at 25 °C.