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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
pH
Type of information:
experimental study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
2001
Report date:
2001
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report date:
2008

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
CIPAC MT 75 (Determination of pH Values)
Version / remarks:
(pH determination of the 1% test solution)
Principles of method if other than guideline:
pH measurements of solutions with different degrees of dilution
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium p-chloro-m-cresolate
EC Number:
239-825-8
EC Name:
Sodium p-chloro-m-cresolate
Cas Number:
15733-22-9
Molecular formula:
C7H6ClNaO
IUPAC Name:
sodium 4-chloro-3-methylphenolate
Test material form:
solid: flakes
Details on test material:
Sample no./year: 08545/2001
Specific details on test material used for the study:
content of test substance: 73.3 %

Results and discussion

pH valueopen allclose all
pH value:
10.8
Concentration:
0.1 other: % (w/w)
pH value:
11.5
Concentration:
1 other: % (w/w)
pH value:
12.3
Concentration:
10 other: % (w/w)

Applicant's summary and conclusion

Executive summary:

In a study similar to CIPAC MT 75 following pH values were determined for aqueous solutions:

pH 10.8 at a concentration of 0.1 % (w/w as hydrate)

pH 11.5 at a concentration of 1.0 % (w/w as hydrate)

pH 12.3 at a concentration of 10 % (w/w as hydrate)