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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 August 2017 to April 2018
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference Type:
study report
Report date:

Materials and methods

Test guideline
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
27 July 1995
GLP compliance:
yes (incl. QA statement)
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
1,2,3-tris(2-octyldodecyl) 2-hydroxypropane-1,2,3-tricarboxylate
EC Number:
Cas Number:
Molecular formula:
1,2,3-tris(2-octyldodecyl) 2-hydroxypropane-1,2,3-tricarboxylate
Test material form:
Details on test material:
Tris(octyldodecyl) citrate 99.87 %
Bis(octyldodecyl) citrate 0.13 %
Specific details on test material used for the study:
The test substance, 2,3-Propanetricarboxylic acid, 2-hydroxy-1,2,3-tris(2-octyldodecyl) ester was allocated the code ESTS 69/17 for reference throughout the study.
Name: 2,3-Propanetricarboxylic acid, 2-hydroxy-1,2,3-tris(2-octyldodecyl) ester (Citmol 320)
Physical state: Clear, faintly yellow liquid
Purity: 99.39%
Molecular weight: 1033.74 g/mol
Storage conditions: Room temperature (15 to 30°C)

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
< -60 °C
Atm. press.:
ca. 96.9 kPa
Remarks on result:
other: No endotherm relating to a melting temperature was observed, the melting point was therefore < -60°C as this was the lowest test temperature

Any other information on results incl. tables

Melting/Freezing and Boiling Point

No endotherm relating to a melting temperature was observed, the melting point was therefore < -60°C as this was the lowest test temperature. Exothermic drift followed by decomposition was observed with a mean starting temperature of 174°C for the exothermic drift which lead into a broad exotherm with a mean starting temperature of 300°C. A red brown residue remained in the crucibles at the end of the test. The thermograms are shown in Figure 12 and Figure 13 (attached).

Applicant's summary and conclusion

The melting / freezing point of the test substance was found to be <-60 °C at 96.9 kPa, under the conditions of the test.
Executive summary:

In this guideline (OECD 102) study, conducted with GLP certification, the melting point of the test substance (EC 603-121-2) was found to be <-60 °C at 96.9 kPa