Phenol, 4-(phenylamino)-, sulfurized, 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:

October 28, 2011 - November 01, 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Deviations:

no

GLP compliance:

no

Type of method:

differential thermal analysis

Key result

Boiling pt.:

>= 99.1 - <= 101.7 °C

Atm. press.:

1 013.3 hPa

Boiling Point / Boiling Range (DSC):

Four measurements in aluminium crucibles with a hole showed an endothermic effect (boiling) in the temperature range 90 °C to 160 °C with an onset temperature between 99.0 °C and 101.7 °C.The onset temperature is derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline.

Ident-No.	Onset / °C	Temperature range / °C	Crucible
32287	101.65	95 – 160	Aluminium with a hole
32288	100.68	90 – 140	Aluminium with a hole
32289	100.54	95 – 160	Aluminium with a hole
32290	99.03	95 – 150	Aluminium with a hole

For the correction D tof the boiling point to standard atmospheric pressure (1013.3 hPa) the equation, table and graphs of H.B. Hass and R.F. Newton in „CRC Handbook of Chemistry and Physics, 74^th ed. 1993-1994“, pages 15-16 and 15-17 were used.

Dt = [(273.15+t) (3.0057-log p)] / [F+ 0.15(3.0057-log p)]            (t in °C, p in hPa)

For the estimation of F the test item was classified in group 6 (water) according to the table of H.B Hass and R.F. Newton.

Ident.-No.	Onset / °C	Atmospheric pressure / hPa	F (group 6)	Dt / °C	Boiling point at 1013.3 hPa / °C
32287	101.65	1012	5.675	0.034	101.68
32288	100.68	1012	5.673	0.034	100.71
32289	100.54	1012	5.672	0.034	100.57
32290	99.03	1012	5.669	0.034	99.06

The test item has a boiling range at atmospheric pressure (1013.3 hPa) of 99.1 °C to 101.7 °C.

Conclusions:

The test item has a boiling range at atmospheric pressure (1013.3 hPa) of 99.1 °C to 101.7 °C.

Executive summary:

The determination of the boiling point was carried out by differential scanning calorimetry (DSC) according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2. The test item was heated up from ambient temperature and -50 °C, respectively, to the final temperature (200 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). The quantity of heat absorbed or released was measured and recorded. Aluminium crucibles with a small hole were used as containers for the test item and as empty reference crucible. About 18 mg to 30 mg of the test item were used. Four measurements in aluminium crucibles with a hole showed an endothermic effect (boiling) in the temperature range 90 °C to 160 °C with an onset temperature between 99.0 °C and 101.7 °C. The onset temperature is derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline.

Description of key information

The test item has a boiling range at atmospheric pressure (1013.3 hPa) of 99.1 °C to 101.7 °C.

Additional information

The determination of the boiling point was carried out by differential scanning calorimetry (DSC) according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2. The test item was heated up from ambient temperature and -50 °C, respectively, to the final temperature (200 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). The quantity of heat absorbed or released was measured and recorded. Aluminium crucibles with a small hole were used as containers for the test item and as empty reference crucible. About 18 mg to 30 mg of the test item were used. Four measurements in aluminium crucibles with a hole showed an endothermic effect (boiling) in the temperature range 90 °C to 160 °C with an onset temperature between 99.0 °C and 101.7 °C. The onset temperature is derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline. The boiling point of the test item is influenced by its high water content.