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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
dissociation constant
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
May 2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Estimated using QSAR (SPARC Software), in accordance with REACH Annex XI.
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
publication
Title:
A Rigorous Test for SPARC's Chemical Reactivity Models: Estimation of More than 4300 Ionizaiton pKa's.
Author:
Hilal SH, Karickhoff SW
Year:
1995
Bibliographic source:
Quant. Struct. Act. Relat., (1995) 14, pp.348-355, as implemented in SPARC, March 2008 release w. 4.2.1405-s.4.2.1408

Materials and methods

Test guideline
Guideline:
other: QSAR (SPARC) used for estimation, in accordance with REACH Annex XI.
Principles of method if other than guideline:
Estimated using SPARC Software
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Dibutyl terephthalate
EC Number:
217-803-9
EC Name:
Dibutyl terephthalate
Cas Number:
1962-75-0
Molecular formula:
C16H22O4
IUPAC Name:
1,4-dibutyl benzene-1,4-dicarboxylate

Results and discussion

Dissociating properties:
no
Dissociation constant
pKa:
-5.3
Temp.:
25 °C

Applicant's summary and conclusion