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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint:
dissociation constant
Type of information:
(Q)SAR
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: QSAR calculation, reliable with restrictions
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
other: QSAR
Title:
A rigorous test for SPARC's chemical reactivity models: estimation of more than 4300 ionizable pKa's
Author:
Hilal, Said, Karickhoff and Carreira
Year:
1995
Bibliographic source:
Quantitative structure activity relationships, 14

Materials and methods

Principles of method if other than guideline:
SPARC has been run based on the reference cited above by entering the SMILES string for 3-methoxybutan-1-ol. Only one ionisable site was identified for this substance so the pKa was calculated based on this site.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
3-methoxybutan-1-ol
EC Number:
219-741-8
EC Name:
3-methoxybutan-1-ol
Cas Number:
2517-43-3
Molecular formula:
C5H12O2
IUPAC Name:
3-methoxybutan-1-ol
Details on test material:
No data

Results and discussion

Dissociating properties:
yes
Dissociation constant
No.:
#1
pKa:
15.39
Temp.:
25 °C

Applicant's summary and conclusion

Conclusions:
3-methoxybutan-1-ol is calculated as having a dissociation constant of 15.39.
Executive summary:

It is not possible to chck whether 3 -methoxybutan-1 -ol falls within the domain of the model as no information is available on the model parameters in SPARC. However, SPARC is considered a reliable model for calculating pKa and is considered suitable for use for this endpoint. 3-methoxybutan-1-ol is calculated as having a dissociation constant of 15.39.