Acetamide, N-(2,4-dinitrophenyl)-, reaction products with p-phenylenediamine, sodium sulfide (Na2(Sx)) and sulfur, leuco deriv.

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-07-13 - 2018-03-06

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Version / remarks:

2008

Deviations:

no

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

Remarks:

+ capillary method

Key result

Atm. press.:

>= 995.6 - <= 1 009.1 hPa

Decomposition:

yes

Decomp. temp.:

ca. 90 °C

Remarks on result:

other:

Remarks:

No boiling point up to decomposition

Melting and Boiling Point (DSC)

The test item showed two endothermic effects in the temperature ranges of 50 – 190 °C and 200 – 300 °C. No further thermal effects could be observed up to the maximum test temperature of 500 °C.

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
PN13888	12.26	60.78 217.22	50 – 170 (endo) 200 – 300 (endo)	3.67	995.6
PN13901	13.54	61.83 217.77	50 – 190 (endo) 200 – 300 (endo)	4.02	1009.1

During the heating phase two endothermic effects were detected the temperature ranges of 50 – 190 °C and 200 – 300 °C, which cannot be clearly assigned to a melting or a boiling of the test item.

Measurements by the Capillary Method

To verify the results of the DSC measurement, three additional measurements with the capillary method (Apparatus: Stuart Melting Point SMP 30) were performed in the temperature range of 25 – 400 °C with a heating rate of 10 K/min. According to the observationsduring the tests with the capillary method, the first endothermic effect in the temperature range of 50 – 190°C in the DSC measurements with open crucibles cannot be assigned to the melting of the test item, since the test item did not change its appearance.Since the test item contains 1.72 % water, it can be assumed, that the endothermic effect is caused by the drying of the test item. Also inthe temperature of range of approx. 200 – 300 °C no effect could be observed. Due to the fact that exothermic effects were observed in the DSC measurements for the determination of the thermal stability starting at a temperature of approx. 90 °C, it can be stated that the test item has no melting and boiling point up to its decomposition.

Conclusions:

The test item Olive BW has no boiling point as determined by differential scanning calorimetry and capillary method 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 Olive BW has no boiling point as determined by differential scanning calorimetry and capillary method according to Regulation EC No. 440/2008 Method A.2., OECD Test Guideline 103 (1995) and EPA OCSPP 830.7220 (1996).

Description of key information

The test item Olive BW has no boiling point as determined by differential scanning calorimetry and capillary method according to Regulation EC No. 440/2008 Method A.2., OECD Test Guideline 103 (1995) and EPA OCSPP 830.7220 (1996).