Benzene, mono-C10-13-alkyl derivs., distn. residues, sulfonated, barium salts

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-10-23 - 2017-12-06

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7220 (Boiling Point / Boiling Range)

Version / remarks:

1996

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes

Type of method:

method according to Siwoloboff

Key result

Boiling pt.:

> 210.3 °C

Atm. press.:

100.4 kPa

Decomposition:

yes

Remarks on result:

other: refer to 'Any other information on results incl. tables'

A boiling point approximation test (Rapid Scan) did result in a measurable boiling point of approximately 240°C (513 K) and a boiling range of 220 (493 K) to 240°C (513 K). These results were used to determine the range of temperatures used in the definitive test. The Rapid Scan testing was performed at a temperature gradient of 5°C per minute; the definitive testing was performed using a gradient of 1°C per minute. During the definitive testing the barium sulfonate test substance samples did display an initial emergence of bubbles (start of boiling range) at a mean corrected or normalized temperature of 210.3 ± 0.7°C (483.4 K) - for the three tests. An increase in the bubble frequency was observed at approximately 300°C for each sample. However, the rate of bubble production did not approach that of a true boiling point. The testing was discontinued at 350°C as the samples underwent thermal degradation and rendered a visible boiling point endpoint impossible. Upon removal from the instrument (at test termination), the barium sulfonate test substance was almost black in color. Results of the normalized (normal) boiling point data, corrected to standard barometric pressure, for the barium sulfonate test substance are presented in Table below.

Subsample	Instrument Gradient (°C/min)	Barometric Pressure (kPa)	Start of Boiling Range (°C)	End of Boiling Range (°C)	Boiling Point (°C)
1	1.0	100.3	210.1	n/a	n/a
2		100.3	210.4
3		100.6	211.4
Overall Means: Standard Deviations: CV (%):		100.4 0.2 0.17	210.6 0.7 0.32

Conclusions:

The definitive boiling point testing did show an initial emergence of bubbles (start of boiling range) at a corrected or normalized temperature of 210.3 ± 0.7°C (483.4 K). However, no definitive boiling point was observed.

Executive summary:

This boiling-point study was conducted according to GLP, to OECD guideline 103 (a modification of the Siwoloboff procedure) and to OPPTS 830.7220.

The definitive boiling point testing did show an initial emergence of bubbles (start of boiling range) at a corrected or normalized temperature of 210.3 ± 0.7°C (483.4 K). However, no definitive boiling point was observed.

Description of key information

This boiling-point study was conducted according to GLP, to OECD guideline 103 (a modification of the Siwoloboff procedure) and to OPPTS 830.7220.

The definitive boiling point testing did show an initial emergence of bubbles (start of boiling range) at a corrected or normalized temperature of 210.3 ± 0.7°C (483.4 K). However, no definitive boiling point was observed.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

210.3 °C