Phosphoric acid C12-alkyl and C18-alkyl esters, potassium salts

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-02-19 to 2018-03-21

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline 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

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Key result

Atm. press.:

1 013.25 hPa

Decomposition:

yes

Decomp. temp.:

ca. 300 °C

In thermograms of the DSC runs in the temperature ranges of 30 - 90 °C, 110 - 180 °C and 190 - 250 °C, three small endothermic effects were observed. Between 300 and 500 °C two exothermic effects could be detected. During the heating phase three small endothermic effects were observed, which can’t be clearly assigned to a melting of the test item. Thus, the capillary method was performed for a verification of the DSC-Measurements. Since no boiling of the test item could be observed in the capillary method, the test item has no boiling point up to the exothermal decomposition starting at 300 °C.

Conclusions:

The substance decompose before boiling.

Executive summary:

A study was conducted according to OECD test guideline 103, Regulation (EC) No 440/2008 method A.2 and EPA OCSPP test guideline 830.7220 to determine the boiling point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen).Two tests with about 12 – 19 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. In the thermograms of the DSC runs in the temperature ranges of 30 - 90 °C, 110 - 180 °C and 190 - 250 °C, three small endothermic effects were observed. Between 300 and 500 °C two exothermic effects could be detected. During the heating phase three small endothermic effects were observed, which can’t be clearly assigned to a melting of the test item. Thus, the capillary method was performed for a verification of the DSC-Measurements. Since no boiling of the test item could be observed in the capillary method, the test item has no boiling point up to the exothermal decomposition starting at 300 °C.

Description of key information

The substance decompose before boiling.

Additional information

A study was conducted according to OECD test guideline 103, Regulation (EC) No 440/2008 method A.2 and EPA OCSPP test guideline 830.7220 to determine the boiling point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible under an inert atmosphere (nitrogen).Two tests with about 12 – 19 mg of the test item were performed. As reference crucible, an empty aluminium crucible was used. In the thermograms of the DSC runs in the temperature ranges of 30 - 90 °C, 110 - 180 °C and 190 - 250 °C, three small endothermic effects were observed. Between 300 and 500 °C two exothermic effects could be detected. During the heating phase three small endothermic effects were observed, which can’t be clearly assigned to a melting of the test item. Thus, the capillary method was performed for a verification of the DSC-Measurements. Since no boiling of the test item could be observed in the capillary method, the test item has no boiling point up to the exothermal decomposition starting at 300 °C.