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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Reference
Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 112 (Dissociation Constants in Water)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7370 (Dissociation constants in water)
Deviations:
no
GLP compliance:
yes
Dissociating properties:
not determined
No.:
#1
pKa:
>= 13.08 - <= 13.68
Remarks on result:
other: Acidic pKa value range
No.:
#2
pKa:
>= -5.66 - <= -4.07
Remarks on result:
other: Alkaline pKa value range
Conclusions:
Due to the complex nature of the test substance, the pKa value could not be experimentally determined. The calculated acidic pKa values ranged from 13.08 to 13.68, with the alkaline pKa values ranging from -5.66 to -4.07 for the individual constituents in the substance.

Description of key information

Due to the complex nature of the test substance, the pKa value could not be experimentally determined. The calculated acidic pKa values ranged from 13.08 to 13.68, with the alkaline pKa values ranging from -5.66 to -4.07 for the individual constituents in the substance.

Key value for chemical safety assessment

Additional information