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Physical & Chemical properties

Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Between 03 November 2011 and 24 December 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Valid and conclusive guideline study under GLP
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
Commission Regulation (EC) No. 440/2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ASTM E537-86
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Department of Health of Government of the U.K., inspection 19-21 July 2011
Type of method:
differential scanning calorimetry
Remarks:
(DSC)
Atm. press.:
98.3 kPa
Decomposition:
yes
Decomp. temp.:
>= 312 °C

Table 2: Thermographic Data – Determination 1

 Thermal Event  Interpretation  Temperature
 [°C]  [K]
 Endotherm Approximate start of decomposition  312.02  585.17
Peak of decomposition  337.65  610.80

Table 3: Thermographic Data – Determination 2

 Thermal Event  Interpretation  Temperature
 [°C]  [K]
 Endotherm Approximate start of decomposition  316.42  589.57
Peak decomposition  337.47  610.62

Atmospheric pressure: Approximately 98.3 kPa

Overall result: Decomposition from approximately 312 °C (585 K)

Conclusions:
Decomposition from approximately 312 °C (585 K) at 98.3 kPa before boiling
Executive summary:

The boiling behaviour of the test item was investigated in a GLP-compliant study by Differential Scanning Calorimetry (DSC) according to the ASTM E537-86 protocol, which is compatible to EU A.2 (2008) and OECD TG 103 (1995) standards. The experiment is deemed valid, conclusive and thus suitable for assessment without restrictions.

Decomposition occurred from approximately 312 °C (585 K) at ca. 98.3 kPa and consequently no value for the boiling temperature could be determined.

As a result of the low rate of enthalpy change during decomposition, the onset temperature can only be approximated. The white solid residue was considered to be a salt of the phosphonate group, while the endotherm was due to evaporation of the long chain alcohols within the test item.

Description of key information

Decomposition from approximately 312 °C (585 K) at 98.3 kPa before boiling (OECD 103)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
312 °C

Additional information

The boiling behaviour was investigated in a GLP-compliant study (Fox & White 2012, Harlan Report no. 41103263) by Differential Scanning Calorimetry (DSC) according to the ASTM E537-86 protocol, which is compatible to EU A.2 (2008) and OECD TG 103 (1995) standards. The experiment is deemed valid, conclusive and thus suitable for assessment without restrictions.

Decomposition occurred from approximately 312 °C (585 K) at ca. 98.3 kPa and consequently no value for the boiling temperature could be determined. As a result of the low rate of enthalpy change during decomposition, the onset temperature can only be approximated. The white solid residue was considered to be a salt of the phosphonate group, while the endotherm was due to evaporation of the long chain alcohols within the submission item.