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

Boiling point

Administrative data

Endpoint:

boiling 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 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

2008

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Version / remarks:

1996

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

Boiling point

Key result

Boiling pt.:

76 °C

Atm. press.:

1 017 hPa

Decomposition:

no

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

Three different experiments (1, 2 and 3) were performed within the mains tudy.

During heating in experiment 1, an endothermic peak between 50°C and 100°C was observed. The extrapolated onset temperature of the peak was 76.447°C. The effect was most likely obtained due to boiling of the test item. After the experiment it was observed that the test item was evaporated from the sample container.

To further investigate the boiling peak a closed sample container was applied in the Experiment 2. In a closed sample container gas pressure built up above the test item is higher than in an open sample container (where it equals atmospheric pressure). In this way boiling is observed at higher temperatures. The extrapolated onset temperature of the boiling peak in the closed sample container was 115.179°C. As can be seen the endothermic peak shifted to higher temperatures. It demonstrated that boiling of the test item was the reason for the endothermic effect. Another endothermic signal was observed at approximately 225°C. As a comparable signal was not observed in Experiment 1, it was considered an artefact. A mechanical shock may have caused it. After the experiment it was observed that the test item was evaporated from the sample container.

Experiment 3 was performed to determine the duplicate boiling temperature of the test item. The extrapolated onset of the boiling peak was 76.007°C. After the experiment it was observed that the test item was evaporated from the sample container.

The boiling temperature was determined as the average boiling temperature obtained from experiment 1 (76.447°C) and experiment 3 (76.007°C).

Applicant's summary and conclusion

Conclusions:

The boiling point of dichloro trifluoro methoxy dioxolane was determined at 76°C (349K) by using DSC (Differential Scanning Calorimetry).

Executive summary:

The boiling temperature of dichloro trifluoro methoxy dioxolane (CAS 161611-73-0) was determined using differential scanning calorimetry (DSC). The test was perforemd according to the OECD Guidelines for the Testing of Chemicals no. 102: "Melting Point / Melting Range", July 27, 1995 and was GLP compliant.

The boiling temperature of the test item was evaluated from the DSC curve as the extrapolated onset temperature of the endothermic melting peak.

The boiling temperature of dichloro trifluoro methoxy dioxolane was determined at 76°C (349K) by using DSC (Differential Scanning Calorimetry).