Diethyl bis(2-hydroxyethyl)aminomethylphosphonate

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)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Deviations:

no

Principles of method if other than guideline:

With this method the difference in energy input into the test item and a reference material as a function of temperature is recorded, while the substance and reference material are subjected to the same temperature program. This energy is the energy necessary to establish zero temperature difference between the test item and the reference material. When the sample undergoes a transition involving a change of enthalpy, that change is indicated by an endothermic deviation (e.g. melting, boiling) from the base line of the heat flow record. As result, a thermogram is obtained in which the transition heat flow is exhibited as a function of the temperature. In this diagram, the onset of the process (e.g. decomposition, physical process) as well as the heat flow of the process are shown.

GLP compliance:

yes

Type of method:

differential scanning calorimetry

Remarks on result:

not determinable

Remarks:

No boiling point was detected between the starting temperature of -90°C and the final measurement temperature of 500 °C

Key result

Atm. press.:

1 002 hPa

Decomposition:

yes

Decomp. temp.:

ca. 150 °C

Remarks on result:

other:

Remarks:

Start of decomposition

The test item showed a first exothermic effect starting from 120 °C with an average energy release of -5 J/g and another exothermic effect starting at a temperature of 150 °C with an average release energy of -390 J/g. No endothermic effects were detected between the starting temperature of -90°C and the final measurement temperature of 500 °C which can be assigned to a melting or a boiling of the test item.

Conclusions:

The test item has no boiling point up to its decomposition starting at a temperature of approx. 150 °C as determined by differential scanning calorimetry.

Executive summary:

In this test, boiling temperature of the test item is investigated by differential scanning calorimetry (DSC).

The test item has no boiling point up to its decomposition starting at a temperature of approx. 150 °C as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2., OECD Test Guideline 103 (1995) and EPA OCSPP 830.7220 (1996).

Description of key information

The test item has no boiling point up to its decomposition starting at a temperature of approx. 150 °C (OECD 103, DSC; Kremer 2018; GLP).

Key value for chemical safety assessment

Temperature of decomposition (state purity):

150 °C

Additional information

Two fully reliable, guideline, GLP studies are available. The DSC method was chosen as key, as providing more information than the capillary visual method.