Phosphoric acid, 2-ethylhexyl ester, sodium salt

Stability: thermal, sunlight, metals

Link to relevant study record(s)

Reference

Endpoint:

thermal stability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-02-27 to 2018-03-23

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test substance thermally stable:

yes

Sublimation:

not determined

Transformation products:

not measured

Test substance stable to sunlight:

not determined

Test substance stable to metals / metal ions:

not determined

Thermal Stability (DSC)

In the temperature ranges of 180 – 220 °C and 230 – 280 °C one and two, respectively, very small exothermic effects were detected.At approx. 300 °C the pressure in the crucibles started to increase.

Results of the DSC-measurements

No.	Sample weight / mg	Start of effect / °C	Energy / J/g	Remark
PN15034	5.72	180 230	-10 (exothermic) -20 (exothermic)
PN15035	7.98	230	-10 (exothermic)

 

Conclusions:

The substance is thermal stable at ambient conditions.

Executive summary:

A study was conducted according to OECD TG 133 to determine the thermal stability of the test item using DSC measurement. Two samples with about 6 - 8 mg of the test item were used in the test. The upper end of the crucible was sealed by melting with an oxyhydrogen flame. The crucible was then reweighed with an accuracy of 0.01 mg. As reference crucible, a glass crucible with aluminiumoxide was used. In the temperature ranges of 180 – 220 °C and 230 – 280 °C one and two, respectively, very small exothermic effects were detected. At approx. 300 °C the pressure in the crucibles started to increase. In the DSC-measurements the overall energy of the exothermic effects of the test item in closed glass crucibles was approx. -20 J/g and thus below the threshold of -500 J/g for explosive properties.

Description of key information

The substance is thermal stable at ambient conditions.

Additional information

A study was conducted according to OECD TG 133 to determine the thermal stability of the test item using DSC measurement. Two samples with about 6 - 8 mg of the test item were used in the test. The upper end of the crucible was sealed by melting with an oxyhydrogen flame. The crucible was then reweighed with an accuracy of 0.01 mg. As reference crucible, a glass crucible with aluminiumoxide was used. In the temperature ranges of 180 – 220 °C and 230 – 280 °C one and two, respectively, very small exothermic effects were detected. At approx. 300 °C the pressure in the crucibles started to increase. In the DSC-measurements the overall energy of the exothermic effects of the test item in closed glass crucibles was approx. -20 J/g and thus below the threshold of -500 J/g for explosive properties.