Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
dissociation constant
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Internationally accepted method.
Principles of method if other than guideline:
ACD/Labs, I-Lab 2.0 , Algorithm Version: v5.0.0.184
GLP compliance:
no
Dissociating properties:
not determined
Remarks:
The test material is a complex mixture that had been determined to be essentially insoluble in water.
No.:
#1
pKa:
3.4
Remarks on result:
other: Strongest pKa(Base): 3.4+/-0.6

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 3.4 ± 0.6

Conclusions:
Strongest pKa(Acid): No Acid pKa
Strongest pKa(Base): 3.4 ± 0.6
Executive summary:

Dissociation constant:

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 3.4 ± 0.6

(ACD/Labs, I-Lab 2.0 , Algorithm Version: v5.0.0.184)

Endpoint:
dissociation constant
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Internationally accepted method.
Principles of method if other than guideline:
ACD/Labs, I-Lab 2.0 , Algorithm Version: v5.0.0.184
GLP compliance:
no
Dissociating properties:
not determined
Remarks:
The test material is a complex mixture that had been determined to be essentially insoluble in water.
No.:
#1
pKa:
1.3
Remarks on result:
other: >Strongest pKa(Base): 1.3+/-0.4.

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 1.3 ± 0.4

Conclusions:
Strongest pKa(Acid): No Acid pKa
Strongest pKa(Base): 1.3 ± 0.4
Executive summary:

Dissociation constant:

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 1.3 ± 0.4

(ACD/Labs, I-Lab 2.0 , Algorithm Version: v5.0.0.184)

Description of key information

For complex mixtures the assessment of pKa is clearly complicated. Therefore, the estimation of the representative constituent’s pKa values is presented:

Main component 1:

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 3.4 ± 0.6

Main component 2:

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 1.3 ± 0.4

Key value for chemical safety assessment

Additional information

For complex mixtures the assessment of pKa is clearly complicated. Therefore, the estimation of the representative constituent’s pKa values is presented:

Main component 1:

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 3.4 ± 0.6

Main component 2:

Strongest pKa(Acid): No Acid pKa

Strongest pKa(Base): 1.3 ± 0.4