(1E)-1-chloro-3,3,3-trifluoroprop-1-ene

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

ca. 19 °C

Atm. press.:

ca. 1 021 hPa

Decomposition:

no

PRELIMINARY TEST:

At the start of the test, the weight of the sample decreased significantly. At 22 °C the sample weight had decreased by 25 %. After the experiment it was observed that the test substance was evaporated from the sample container.

 

MAIN STUDY:

A strong endothermic effect between -50 °C and 50 °C was observed. The effect was most likely due to evaporation of the test substance in combination of melting of water, which had been condensed from air during transport of the sample container. The extrapolated onset temperature of the boiling peak of the test substance was 17.91 °C. The value was probably underestimated due to the relative broad effect prior to evaporation. The value was therefore not used for the determination of the boiling temperature of the test substance.

No effects due to crystallisation and/or melting of the test substance were observed in the first experiment. After the experiment it was observed that the test substance was evaporated from the sample container.

During a second experiment, the sample container was insulated during transport from the freezer to the DSC in order to minimalise condensation of water on the sample container. A sharp evaporation effect between 0°C and 50°C was observed. The extrapolated onset temperature of the boiling peak was 19.15 °C.

No effects due to crystallization and/or melting of the test substance were observed. After the experiment it was observed that the test substance was evaporated from the sample container.

A third experiment was performed to obtain a duplicate value for the boiling temperature of the test substance. Similar results as with the second experiment were obtained. The extrapolated onset of the evaporation peak was 18.98 °C. After the experiment it was observed that the test substance was evaporated from the sample container.

Conclusions:

The substance has a boiling temperature of 19 °C at 1021 hPa.

Executive summary:

The boiling point of the substance was determined in a study in accordance with OECD TG 103 (differential scanning calorimetry (DSC)) and in compliance with GLP criteria. The test substance is evaluated from the DSC curve as the extrapolated onset temperature of the endothermic boiling peak. A sharp evaporation effect between 0 °C and 50 °C was observed. The extrapolated onset temperature of the boiling peak was 19.15 and 18.98 °C in duplicate testing. Based on these data the boiling point of the substance was determined at 19 °C.

Description of key information

The boiling point of the substance was determined at 19 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

19 °C

Additional information

The boiling point of the substance was determined in a study in accordance with OECD TG 103 (differential scanning calorimetry (DSC)) and in compliance with GLP criteria (NOTOX BV, 2010). The test substance is evaluated from the DSC curve as the extrapolated onset temperature of the endothermic boiling peak. A sharp evaporation effect between 0 °C and 50 °C was observed. The extrapolated onset temperature of the boiling peak was 19.15 °C and 18.98 °C in duplicate testing.