Reaction product of the mixture p-phenylenediamine and 4-(2-naphthalenylamino)phenol with sodium polysulfide

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-10-25 - 2018-04-19

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:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

2008

Deviations:

no

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Version / remarks:

1996

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

Reaction product of the mixture p-phenylenediamine and 4-​(2-​naphthalenylamino)​phenol with sodium polysulfide

EC Number:

947-876-9

Molecular formula:

not applicable

IUPAC Name:

Reaction product of the mixture p-phenylenediamine and 4-​(2-​naphthalenylamino)​phenol with sodium polysulfide

Test material form:

solid: particulate/powder

Details on test material:

Test item: Black DB
Appearance: black powder

Results and discussion

Boiling point

Key result

Atm. press.:

>= 992.5 - <= 992.9 hPa

Decomposition:

yes

Decomp. temp.:

ca. 100 °C

Remarks on result:

other:

Remarks:

No boiling point up to decomposition

Any other information on results incl. tables

Melting and Boiling Point (DSC)

The test item showed an endothermic effect in the temperature range of 60 – 190 °C, which can be assigned to a drying of the test item (water content 2.71 %). In the temperature range of 230 – 430 °C, an exothermic effect was observed with an average decomposition energy of -520 J/g.

Table 1:    Results of the DSC-measurements

No.	Sample weight / mg	Onset of Effect / °C	Range of effect / °C	Weight loss / mg	Atmospheric pressure / hPa	Remark
PN14799	7.95	--- ---	50 – 150 (endo) 240 – 430 (exo)	1.96	992.9
PN14809	4.31	--- ---	50 – 120 (endo) 230 – 400 (exo)	1.43	992.5

During the heating phase the endothermic effect can be assigned to a drying of the test item. Since no further endothermic effects were detected up to the decomposition of the test item starting at a temperature of approx. 100 °C (see thermal stability), the test item has no melting and boiling point up to its decomposition.

Applicant's summary and conclusion

Conclusions:

The test item Black DB has no boiling point up to its decomposition starting at a temperature of approx. 100 °C as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2., OECD Test Guideline 103 (1995) and EPA OCSPP 830.7220 (1996).

Executive summary:

Summary

The test item Black DB has no boiling point up to its decomposition starting at a temperature of approx. 100 °Cas determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.2., OECD Test Guideline 103 (1995) and EPA OCSPP 830.7220 (1996).