Reaction products of Resin acids and Rosin acids, sodium salts and barium chloride

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

01 March 2017 - 04 May 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

2008

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Version / remarks:

1998

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Test material

Test material information

1

Reference substance name:

Reaction products of Resin acids and Rosin acids, sodium salts and barium chloride

Molecular formula:

not applicable

IUPAC Name:

Reaction products of Resin acids and Rosin acids, sodium salts and barium chloride

Test material form:

solid: particulate/powder

Details on test material:

- Appearance: Light tan powder
- Storage conditions: At room temperature

Results and discussion

Melting / freezing point

Key result

Decomposition:

yes

Decomp. temp.:

125 °C

Remarks on result:

other: no melting point

Any other information on results incl. tables

TGA EXPERIMENT (PRELIMINARY TEST)

Significant decrease of weight from 300°C. 25% weight loss at 406°C and 70% weight loss at 513°C.

After the experiment, dark brown residue was observed on the lid of the sample container and a dark brown molten residue remained in the sample container (original colour: Light tan). The change of the colour indicated reaction and/or decomposition of the test item.

 

DSC EXPERIMENT 1

An endothermic peak between 25°C and 125°C was observed. The effect was most likely obtained due to the evaporation of impurities. From 125°C an exothermic effect followed by an endo and exothermic effect was observed. The effect was caused by reaction and/or decomposition of the test item since, after the experiment, an orange molten residue remained in the sample container.

DSC EXPERIMENT 2

To investigate the evaporation peak, the temperature program of the second experiment was stopped after the first endothermic effect. After the experiment, the residue remained in the sample container was unchanged. With this observation and the results of the preliminary test, the endothermic peak (25°C- 125°C) was caused by evaporation of impurities.

Applicant's summary and conclusion

Conclusions:

Melting and/or boiling of the test item was not observed below the temperature at which reaction and/or decomposition started (i.e. at 125°C). Based on this, the test item has no melting temperature.

Executive summary:

Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200.

During heating from 25°C to 513°C reaction and/or decomposition of the substance started at 125°C.

Melting and/or boiling of the test item was not observed below the temperature at which reaction and/or decomposition started.

From this, it can be concluded that the test substance has no melting temperature.