Thiocyanic acid, (1,3,8,10-tetrahydro-1,3,8,10-tetraoxoanthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-2,9-diyl)di-3,1-phenylene ester, reaction products with sodium sulfide (Na2(Sx))

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

21 March 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

Thiocyanic acid, (1,3,8,10-tetrahydro-1,3,8,10-tetraoxoanthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-2,9-diyl)di-3,1-phenylene ester, reaction products with sodium sulfide (Na2(Sx))

EC Number:

271-559-8

EC Name:

Thiocyanic acid, (1,3,8,10-tetrahydro-1,3,8,10-tetraoxoanthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-2,9-diyl)di-3,1-phenylene ester, reaction products with sodium sulfide (Na2(Sx))

Cas Number:

68585-53-5

Molecular formula:

not applicable

IUPAC Name:

Reaction product of thiocyanic acid, (1,3,8,10-tetrahydro-1,3,8,10-tetraoxoanthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-2,9-diyl)di-3,1-phenylene ester with sodium sulfide

Test material form:

solid: particulate/powder

Details on test material:

Test item: Leuco Sulfur Red 14
Appearance: light red solid
CAS No: 68585-53-5
EC No: 271-559-8

Specific details on test material used for the study:

Expiry date: 06 March 2020
Storage:room temperature

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

> 500 °C

Remarks on result:

other: After the experiments the color of the test item was darkened in the crucible. The endotherm and exotherm peaks in the thermograms do not imply phase transition from a solid to liquid state.

Remarks:

Using a linear heating rate melting point was not observed from room temperature up to 500 °C

Any other information on results incl. tables

After the experiments the color of the test item was darkened in the crucible. The endotherm and exotherm peaks in the thermogramsdo not implyphase transition from a solid to liquid state. Using a linear heating rate melting point was not observed from room temperature up to 500 °C.

Applicant's summary and conclusion

Conclusions:

Using a linear heating rate melting point was not observed from room temperature up to 500 °C.

Executive summary:

The test was carried out at normal atmospheric pressure. Using a linear heating rate melting point was not observed from room temperature up to 500 °C.

Study objective: For the determination of the melting point or melting range, differential scanning calorimetry method was used. A small amount of the test item was inserted into the furnace of the device and the melting point was determined based on measuring the heat flow while raising the temperature. The heat flow in and out of a sample and a reference sample was measured as a function of temperature as the sample was heated.

When the sample undergoes a phase transition, the corresponding change of enthalpy gives a departure from the base line of the heat flow record. The difference in energy input necessary to maintainidenticaltemperatures between the substance and the reference sample is recorded. The measurement signal is the energy absorbed by or released by the sample.

After the experiments the color of the test item was darkened in the crucible.The endotherm and exotherm peaks in the thermogramsdo not implyphase transition from a solid to liquid state.Using a linear heating rate melting point was not observed from room temperature up to 500 °C.