1,3-Dioxolane, 4,5-dichloro-2,2,4-trifluoro-5-(trifluoromethoxy)-

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

February 2016 - June 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2016

Report date:

2016

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

2008

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Version / remarks:

1998

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

4,5-dichloro-2,2,4-trifluoro-5-(trifluoromethoxy)-1,3-dioxolane

EC Number:

605-262-5

Cas Number:

161611-73-0

Molecular formula:

C4F6Cl2O3 C4F6Cl2O3

IUPAC Name:

4,5-dichloro-2,2,4-trifluoro-5-(trifluoromethoxy)-1,3-dioxolane

Test material form:

liquid

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- batch No.of test material: 15-TV09366 - BIN 5/2 BIS C607
- Expiration date of the batch: 31 October 2020

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature
- Stability under test conditions: 31 October 2020

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

< -80 °C

Atm. press.:

1 017 hPa

Any other information on results incl. tables

1) Preliminary test:

From the start of the measurement upwards the weight of the sample decreased significantly. At 61°C the sample weight had decreased by 25%. After the experiment it was observed that the test item was evaporated from the sample container.

2) Main study:

During cooling, no effects were observed which were associated with crystallization of the test item.

To further investigate the melting temperature of the test item, two subsamples of the test item were stored for 17 hours at -22.3 ± 0.7°C and for 18 hours at -82.4 ± 2.1°C respectively. It was observed after storage that the test item was a liquid (in both -20°C and -80°C freezer). According to this it was concluded that the melting temperature of the test item is < 80°C (<193K).

Applicant's summary and conclusion

Conclusions:

The melting point / freezing point of dichloro trifluoro methoxy dioxolane was determined at < -80°C (< 193K) after storage in the freezer for 17°C at -22.3 °C and for 18 hours at -82.4 °C.

Executive summary:

The melting point / freezing point of dichloro trifluoro methoxy dioxolane was initially investigated using differential scanning calorimetry (DSC). The test was performed according to the OECD Guidelines for the Testing of Chemicals no. 102: "Melting Point / Melting Range", July 27, 1995 and was GLP compliant.

During cooling of the test item (a liquid), no effects were observed which were associated with crystallization of the test item. Therefore an additional test was conducted in which two subsamples of the test item were placed in a freezer at -20°C for 17 hours and -80°C for 18 hours, respectively. It was observed, after storage, that the test item was a liquid (in both -20°C and -80°C freezer). Based on this results, it was

concluded that the melting point / freezing point of the test item is < -80°C (< 193K) under this experimental conditions.