Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-03-08 - 2017-05-03
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted to GLP in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
EC Guideline A.1. Melting/Freezing Temperature. May 31, 2008.
EPA Product Properties Test Guideline OPPTS 830.7200: Melting Point/Melting Range.
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
Tributylphosphine
EC Number:
213-651-2
EC Name:
Tributylphosphine
Cas Number:
998-40-3
Molecular formula:
C12H27P
IUPAC Name:
tributylphosphane
Test material form:
not specified

Results and discussion

Melting / freezing point
Key result
Melting / freezing pt.:
> -75 - < -15 °C
Decomposition:
no

Any other information on results incl. tables

During cooling and heating no effects were observed which were due to crystallization and melting of the test item (results of the cooling step are archived in the raw data). After the experiment, the sample appeared to have been unchanged, i.e. no decomposition and/or evaporation were observed.

To further investigate the melting temperature of the test item, two subsamples of the test item were stored for 18 hours at -22.5 ± 0.4°C and at -81.9 ± 2.7°C respectively. It was observed after storage that the test item was a liquid (≤ -15°C freezer) and a solid (≤-75°C freezer), respectively. According to this it was concluded that the melting temperature of the test item is between -75°C and -15°C.

Applicant's summary and conclusion

Conclusions:
The melting temperature of the tributylphosphine is between -75°C and -15°C.
Executive summary:

The melting temperature of the tributylphosphine is between -75°C and -15°C.