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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14.05.2018 to 23.05.2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
GLP compliance:
no
Type of method:
flask method

Test material

Constituent 1
Chemical structure
Reference substance name:
Didodecyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate
EC Number:
252-939-2
EC Name:
Didodecyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate
Cas Number:
36265-41-5
Molecular formula:
C33H59NO4
IUPAC Name:
didodecyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate
Test material form:
solid: particulate/powder

Results and discussion

Water solubility
Key result
Water solubility:
0 mg/L
Conc. based on:
test mat.
pH:
6.81
Remarks on result:
not measured/tested
Details on results:
In the preliminary test the water solubility was determined to be between < 1 g/L. Based on this the initial concentration of about 1 g/L was chosen. The test results are shown on Table 1 and Figure 1. As seen there the final water solubility was calculated to 2.38 x 10-7 g/L. The average pH-value remained unchanged over time at 6.8.

Table 1: Solubility of DHPA and pH values at different time points
Sample Time (h) Solubility (x10-7 g/L) pH
A1 24 2.39 6.81
A2 2.38 6.80
B1 48 2.39 6.82
B2 2.37 6.81
C1 72 2.39 6.83
C2 2.38 6.80
Mean Value 2.38 6.81

Figure 1: Average results water solubility per time point


Applicant's summary and conclusion