Xanthylium, 3,6-bis(ethylamino)-9-[2-(methoxycarbonyl)phenyl]-2,7-dimethyl-, molybdatesilicate

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:

01 March 2017 - 05 May 2017

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 (incl. QA statement)

Type of method:

differential scanning calorimetry

Key result

Decomposition:

yes

Decomp. temp.:

175 °C

Remarks on result:

other: the substance has no melting point

TGA EXPERIMENT (PRELIMINARY TEST)

Significant decrease of weight from 275°C upwards. At 549°C the sample weight had decreased by 16%.

After the experiment, a black charred residue remained in the sample container (original colour: pink). The change of the colour indicated reaction and/or decomposition of the test item.

DSC EXPERIMENT

DSC curve: see Figure 1 in the attached study report.

The DSC-curve obtained showed an exothermic peak between 25°C and 150°C. Based on the weight loss observed in the TGA experiment it was assumed that this effect was most likely due to evaporation of solvent impurities. From 175°C several effects were observed which are related to reaction and/or decomposition of the test item. After the experiment, a black charred residue remained in the sample container.

Conclusions:

Melting of the test item was not observed below the temperature at which reaction and/or decomposition started (i.e. at 175°C). The substance 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. The substance has no melting temperature. During heating from 25°C to 400°C reaction and/or decomposition of the substance started at 175°C. Melting of the test item was not observed below the temperature at which reaction and/or decomposition started.