[No public or meaningful name is available]

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

23 - 24 Jan 2020

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2020

Report date:

2020

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

GLP compliance:

yes

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

Reaction products of 2,2'-(1,3-phenylenebis(oxy))diethanol with 2-(phenoxymethyl)oxirane and 2-isocyanatoethyl methacrylate

Cas Number:

1431303-59-1

Molecular formula:

Not assigned for UVCB substance.

IUPAC Name:

Reaction products of 2,2'-(1,3-phenylenebis(oxy))diethanol with 2-(phenoxymethyl)oxirane and 2-isocyanatoethyl methacrylate

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Lot/batch number of test material: 6252020
- Purity: 100%
- Expiration date:September 2021

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

>= -4.13 - <= 9.82 °C

Any other information on results incl. tables

Sample Type	Weight of Sample (mg)	Onset Point (°C)	Melting Point Range
Definitive, 5 °C/min	3.501	-4.93	(-4.93) - 5.31
Definitive, 10 °C/min	6.202	-4.13	(-4.13) - 8.78
Definitive, 10 °C/min	4.433	-4.31	(-4.31) - 9.82
Definitive, 10 °C/min	6.410	-4.38	(-4.38) - 9.48
Definitive, 5 °C/min	8.717	-5.19	(-5.19) - 7.91
Definitive, 5 °C/min	8.308	-5.24	(-5.24) - 6.01

The substance has an average onset point of -4.70 °C (SD of 0.482 °C, %RSD of -10.3%). The DSC curve has a sloping baseline of the thermograms likely due to the intermolecular forces of the mixture. The onset point was chosen based on when the slope changed from negative to undefined, identified when the cross-hair of the integrator cursor aligned with the curve. The conclusion point of melting was taken as the point where the heat flow curve returned to baseline. Given the shape of the baseline and endotherm, and the nature of the test substance as a mixture, the melting point range was determined to be from -4.13 to 9.82 °C.

Applicant's summary and conclusion

Conclusions:

The melting range of ERGP-IEM was determined to be -4.13 to 9.82 °C (OECD 102).

Executive summary:

The melting point of ERGP-IEM was determined using differential scanning calorimetry (DSC). During the heating phase a distinct endothermic effect was observed. The standard deviation from onset temperature in the six tests was 0.482 °C from their mean value of -4.70 °C. However, given sloping baseline and composition of test material the melting range was reported as -4.13 to 9.82 °C based on extremes of the measured onset and return to baseline temperatures. The study was conducted in accordance with OECD 102 guidelines and was GLP compliant. Therefore, the study is considered reliable without restrictions.