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Boiling point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

08 April 2021 - 14 April 2021

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study performed under GLP. All relevant validity criteria were met.

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to other study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

Signature: September 2021

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

ca. 294.5 °C

Atm. press.:

ca. 101.6 kPa

Results:

The thermograms and thermographic data for Determination 1 to 4 are shown in the following figures ans tables below:

 

Thermographic data

Thermal Event	Interpretation	Temperature (°C)
		Determination 1	Determination 2
Endotherm	Boiling point	293.95	294.83

 

Thermographic data

Thermal Event	Interpretation	Temperature (°C)
		Determination 3	Determination 4
Endotherm	Boiling point	294.63	294.45

 

Atmospheric pressure:    Determinations 1 & 2: 101.9 kPa

                                        Determinations 3 & 4: 101.6 kPa

Discussion: 

 

The use of perforated (laser drilled) crucible lids in Determinations 3 and 4 produced a more defined boiling endotherm. Therefore, the endpoint has been taken from Determinations 3 and 4.

Conclusions:

The boiling point of the test item has been determined to be 294.5 ± 0.5 °C (567.7 ± 0.5 K) at 101.6 kPa.

Executive summary:

The boiling point of the test item has been determined. The result is summarized below:

294.5 + 0.5 °C (567.7 + 0.5 K) at 101.6 kPa, by differential scanning calorimetry, designed to be compatible with Method A.2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Reference 2

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

21-07-2019 to 26-07-2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study performed under GLP. All relevant validity criteria were met.

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

inspected: August 2018 ; signature: November 2018

Type of method:

differential scanning calorimetry

Boiling pt.:

ca. 569.6 K

Atm. press.:

102 kPa

Decomposition:

no

Remarks on result:

other: 296.5 ±0.5 °C; no decomposition was reported in the study

Measured temperatures were converted from °C to K using T = t + 273.15

T = temperature (K)

t = temperature (°C)

	Thermal Event	Interpretation	Temperature
			ºC	K
Determination 1	onset temperature (254.45) and endotherm extrapolated boiling temperature (296.34 ºC)	Boiling temperature.	296.34	569.49
Determination 2	onset temperature (259.19) and endotherm extrapolated boiling temperature (296.68 ºC)	Boiling temperature.	296.68	569.83

Atmospheric pressure : 102.0 kPa

Mean boiling temperature : 296.5 ±0.5 °C (569.6 ±0.5 K).

 

Overall result: Boiling at 296.5 ±0.5 °C (569.6 ±0.5 K) at 102.0 kPa

Conclusions:

The boiling temperature of the test item has been determined to be: 296.5 ±0.5 °C at 102.0 kPa atmospheric pressure.

Executive summary:

The boiling temperature was determined using EU Method A.2 and OECD TG 103 Differential Scanning Calorimetry (DSC) method under GLP. The test item was tested in duplicate. The mean boiling temperature was determined to be 296.5 ±0.5 °C (or 569.6 ±0.5 K) at 102.0 kPa atmospheric pressure. There was no evidence of substance decomposition during the course of the test. The boiling point is considered to be 296.5 ±0.5 °C (or 569.6 ±0.5 K) at 102.0 kPa.

Description of key information

Weight of evidence : The substance boiling point is : 294.5 + 0.5 °C (567.7 + 0.5 K) at 101.6 kPa, 2020

1. Bp: 296.5 ±0.5 °C (or 569.6 ±0.5 K) at 102.0 kPa atmospheric pressure, EU Method A.2 - DSC method, 2019

2. Bp: 294.5 + 0.5 °C (567.7 + 0.5 K) at 101.6 kPa atmospheric pressure, EU Method A.2 - DSC method, 2021

 

 

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

294.5

Additional information

Key study : EU Method A.2, 2019 : The boiling temperature was determined using EU Method A.2 and OECD TG 103 Differential Scanning Calorimetry (DSC) method under GLP. The test item was tested in duplicate. The mean boiling temperature was determined to be 296.5 ±0.5 °C (or 569.6 ±0.5 K) at 102.0 kPa atmospheric pressure. There was no evidence of substance decomposition during the course of the test. The boiling point is considered to be 296.5 ±0.5 °C (or 569.6 ±0.5 K) at 102.0 kPa.

Key study : EU Method A.2, 2021 : The boiling temperature was determined using EU Method A.2 and OECD TG 103 Differential Scanning Calorimetry (DSC) method under GLP. The test item was tested in duplicate. The mean boiling temperature was determined to be 294.5 ±0.5 °C (or 567.7±0.5 K) at 101.6 kPa atmospheric pressure. There was no evidence of substance decomposition during the course of the test. The boiling point is considered to be 294.5 ±0.5 °C (or 567.7 ±0.5 K) at 101.6 kPa.

Conclusion: The substance boiling point is 294.5 ±0.5 °C (or 567.7 ±0.5 K) at 101.6 kPa.