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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
key study
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
Justification for type of information:
This value is derived using an accepted calculation method.
Qualifier:
according to guideline
Guideline:
other: QSAR model
Principles of method if other than guideline:
Structure-based QSAR property prediction by means of linear free energy relationships and molecular orbital properties.
This value is derived using an accepted calculation method.
GLP compliance:
no
Remarks:
not applicable. QSAR model
Dissociating properties:
yes
No.:
#1
pKa:
< 2
Temp.:
20 °C

The dissociation constant is determinated to be pka <2.0 at 20°C.

Conclusions:
A dissociation constant value of <2.0 was obtained using an accepted calculation method. The result is considered to be reliable
Executive summary:
A dissociation constant value of <2.0 was obtained using an accepted calculation method. The result is considered to be reliable
Endpoint:
dissociation constant
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is readily oxidisable in water
other:

Description of key information

A dissociation constant value of <2.0 was obtained using an accepted calculation method. The result is considered to be reliable

Key value for chemical safety assessment

pKa at 20°C:
2

Additional information

A dissociation constant value of <2.0 was obtained using an accepted calculation method. The result is considered to be reliable