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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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dissociation constant
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Feb 22 1995 - May 6 1996
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
OECD Guideline 112 (Dissociation Constants in Water)
GLP compliance:
Dissociating properties:

The titration curves obtained from the titrations with sodium hydroxide and hydrochloric acid do not show potential jumps corresponding to a neutralisation reaction due to the existence of an acidic or basic centre in the molecule.

Description of key information

The test item has no acidic or basic properties in aqueous solutions. It is not possible to specify dissociation constants for water (OECD Guidelines No. 112, titration method).

Key value for chemical safety assessment

Additional information