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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Old study without GLP, but reliable.

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Study of acidity constants of 3-, 4-, 5-, and 6-chloro-o-toluidinium ions in aqueous solutions and related thermodynamic quantities.
Author:
Gandhi & Patel
Year:
1970
Bibliographic source:
Bull. Chem. Soc. Jap. 455-459
Reference Type:
secondary source
Title:
BUA Stoffbericht 55: Chlortoluidine (3-Chlor-2-methylanilin, 5-Chlor-2-methylanilin, 3-Chlor-4-methylanilin)
Author:
BUA Beratergremium für umweltrelevante Altstoffe
Year:
1990
Bibliographic source:
Verlag Chemie Weinheim 1991

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: pH-measures
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
3-chloro-o-toluidine
EC Number:
201-756-6
EC Name:
3-chloro-o-toluidine
Cas Number:
87-60-5
Molecular formula:
C7H8ClN
IUPAC Name:
3-chloro-2-methylaniline

Results and discussion

Dissociating properties:
yes
Dissociation constant
No.:
#1
pKa:
3.62
Temp.:
25 °C
Remarks on result:
other: Corresponding conjugated acid in water. This results in a pKb-value of 10.39.

Applicant's summary and conclusion