Long-chain alkenyl amide

Boiling point

Administrative data

Endpoint:

boiling point

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is a solid which decomposes before boiling

Cross-reference

Reason / purpose for cross-reference:

data waiving: supporting information

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 20 September 2016 to 06 December 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Version / remarks:

1998

Deviations:

no

GLP compliance:

yes

Type of method:

differential scanning calorimetry

Key result

Decomposition:

yes

Remarks on result:

other: melting was not observed below the temperature at which reaction/decomposition and/or evaporation started.

TGA EXPERIMENT (PRELIMINARY TEST)

Starting at 200°C, the weight of the sample decreased significantly. At 388°C the sample weight had decreased by 25%. After the experiment, a dark brown residue remained in the sample container.

DSC EXPERIMENT 1

During cooling and heating no effects were observed which were due to melting and/or boiling of the test item. The residue at the end of the test was dark red.

DSC EXPERIMENTS 2 AND 3

During cooling and heating no effects were observed which were due to melting and/or boiling of the test item. The residue at the end of the test was dark red in Experiment 2 and red-brown but darker than at the start of the test in Experiment 3.

DSC curve Experiment 2 during heating: see picture below.

Remark: The observed colour change in each of the tests may be due to reaction/decomposition and/or evaporation of part of the test item. 

Conclusions:

The substance has no melting point. During DSC experiments, melting of the test item was not observed below the temperature at which reaction/decomposition and/or evaporation started.

Executive summary:

Melting of the substance was investigated in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200. TGA demonstrated that reaction/decomposition and/or evaporation starts at ca. 200°C.

During DSC experiments, melting of the test item was not observed below the temperature at which reaction/decomposition and/or evaporation started. The substance has no melting temperature.