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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Adequacy of study:
supporting study
Study period:
2016-02-03 to 2016-02-27
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
CIPAC MT 75 (Determination of pH Values)
Deviations:
yes
Remarks:
In the water solubility test, the test item was diluted at 50 g/L. The water solubility of the test item is considerably below 1%.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
R,R-1-(4-tert-butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Molecular formula:
C20H26O3
IUPAC Name:
R,R-1-(4-tert-butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Constituent 2
Chemical structure
Reference substance name:
R,S-1-(4-tert-Butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Molecular formula:
C20H26O3
IUPAC Name:
R,S-1-(4-tert-Butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Constituent 3
Chemical structure
Reference substance name:
S,S-1-(4-tert-Butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Molecular formula:
C20H26O3
IUPAC Name:
S,S-1-(4-tert-Butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Constituent 4
Chemical structure
Reference substance name:
S,R-1-(4-tert-Butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Molecular formula:
C20H26O3
IUPAC Name:
S,R-1-(4-tert-Butyl-phenyl)-3-(4-methoxy-phenyl)-propane-1,3-diol
Test material form:
solid
Details on test material:
Minimum purity 95% w/w

Reagents

Reagent:
water

Results and discussion

pH value
pH value:
ca. 6.4
Temp.:
24 °C
Concentration:
ca. 50 g/L

Any other information on results incl. tables

The test item was diluted at 50 g/L in the water solubility test. The pH measured was around 6.4 at 24°C whereas the pH of the blank was 4.5. It was shown that the water solubility of the test item was only 45.7 mg/L and thus well below the 1% normally tested for pH. Based on these results, it can be concluded that the test item is very slightly alkaline.

Applicant's summary and conclusion