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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data taken from Hazardous Substances Data bank.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Data reported in the Hazardous Substances Data Bank
GLP compliance:
no
Dissociating properties:
yes
No.:
#1
pKa:
10.54
Temp.:
25 °C
Remarks on result:
other: 2,3-xylenol
Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data reported in Hazardous Substances Data Bank.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Data reported in the Hazardous Substances Data Bank
GLP compliance:
no
Dissociating properties:
yes
No.:
#4
pKa:
10.19
Temp.:
25 °C
Remarks on result:
other: 3,5 xylenol
Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data reported in the Hazardous Substances Data Bank
Qualifier:
no guideline followed
Principles of method if other than guideline:
Data reported in Hazardous Substances Data Bank
GLP compliance:
no
Dissociating properties:
yes
No.:
#3
pKa:
9.9
Remarks on result:
other: 3-ethylphenol

Temperature is not reported in the study.

Endpoint:
dissociation constant
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Data reported in Hazardous substances data bank
Qualifier:
no guideline followed
Principles of method if other than guideline:
Data reported in the Hazardous Substances Data Bank
GLP compliance:
no
Dissociating properties:
yes
No.:
#2
pKa:
10.38
Temp.:
20 °C
Remarks on result:
other: 4-ethylphenol
pKa:
10
Temp.:
25 °C

Description of key information

Key value for chemical safety assessment

Additional information

pka: 9.9 - 10.54 from the single constituents.