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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Study period:
2010-09-16 to 2010-10-14
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 112 (Dissociation Constants in Water)
Version / remarks:
Titration Method
Deviations:
not applicable
GLP compliance:
no
Specific details on test material used for the study:
- Name as cited in study report: Polyetheramine D 230
- Color: colorless
- Lot/Batch number: 000STD77L0
- Test substance receipt: 2010-09-16
- Analytical Purity: 100%
Dissociating properties:
not determined
No.:
#1
pKa:
9.3
Temp.:
24 °C
Remarks on result:
other: Half neutralization potential
Conclusions:
The dissociation constant (pKa) of the test substance was determined to be 9.3 at 24 °C.

Description of key information

The dissociation constant (pKa) of the test substance was determined to be 9.3 at 24 °C (BASF, 2010).

Key value for chemical safety assessment

pKa at 20°C:
9.3

Additional information

The dissociation constant was calculated at 24 °C rather than 20 °C.