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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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Endpoint:
dissociation constant
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Principles of method if other than guideline:
Calculation with use of SPARC pKa online calculator v4.5, chemical reactivity models for estimation of ionisation pKa in water.
GLP compliance:
no
Dissociating properties:
no

For detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables".

No dissociation could be determined within the range pH = -0.2 - 14.

Endpoint:
dissociation constant
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Principles of method if other than guideline:
Calculation with use of SPARC pKa online calculator v4.5, chemical reactivity models for estimation of ionisation pKa in water.
GLP compliance:
no
Dissociating properties:
no

For detailed description on the model and its applicability, see "Any other information on materials and methods incl. tables".

No dissociation could be determined within the range pH = -0.2 - 14.

Description of key information

No dissociation

Key value for chemical safety assessment

Additional information

The dissociation constant of the substance fatty acids, C5-10 (linear and branched), tetraesters with pentaerythritol (CAS 68424 -31 -7) was determined by QSAR calculations with SPARC (v4.5) for the two exemplary components covering both ends of the substance specification. No dissociation could be determined within the range pH = -0.2 -14.