A mixture of isomers of branched tetracosane

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

6 December 1994 and 14 April 1995

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1995

Report date:

1995

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

The work described was performed in compliance with the UK Principles of Good Laboratory Practice (The United Kingdom Compliance Programme, Department of Health 1989).

Type of method:

distillation method

Test material

Test material information

Constituent 1

Reference substance name:

A mixture of isomers of branched tetracosane

EC Number:

417-060-2

EC Name:

A mixture of isomers of branched tetracosane

Cas Number:

151006-61-0

Molecular formula:

C24 H50

IUPAC Name:

A mixture of isomers of branched tetracosane

Results and discussion

Boiling point

Boiling pt.:

418 - 591 K

Atm. press.:

101.81 - 103.37 kPa

Any other information on results incl. tables

Results

Determination 1

Vapour temperature (K)	Sample temperature (K)	Observations
290	291	The test material was a clear, colourless liquid
290	336	There was no change in the test material
293	376	There was no change in the test material
300	416	There was no change in the test material
304	435	There was no change in the test material
308	474	Convection currents were visible in the test material
315	510	There was no change in the test material
333	539	There was no change in the test material
344	556	The convection currents were more vigorous
348	571	Bubbles were being formed in the test material
354	593	The test material was bubbling gently
360	602	The test material was bubbling steadily
375	613	Ther test material was bubbling vigorously
388	619	Colourless liquid was forming at the top of the condenser
418	626	The first drop of clear, colourless distillate was collected
477	630	1 ml of clear colourless distillate had been collected
531	634	5 ml of clear colourless distillate had been collected. White vapour had formed in the apparatus
549	>634	10 ml of clear colourless distillate had been collected
567	>634	20 ml of clear colourless distillate had been collected
575	>634	30 ml of clear colourless distillate had been collected
580	>634	40 ml of clear colourless distillate had been collected
583	>634	50 ml of clear colourless distillate had been collected
585	>634	60 ml of clear colourless distillate had been collected
588	>634	70 ml of clear colourless distillate had been collected
590	>634	80 ml of clear colourless distillate had been collected
591	>634	90 ml of clear colourless distillate had been collected
585	>634	95 ml of clear colourless distillate had been collected
553	>634	97.5 ml of clear colourless distillate had been collected
520	>634	Distillation had ceased. 98.5 ml of clear colourless distillate had been collected. On concluding the test, 1 ml of clear very pale liquid remained in the sample flask.

Boiled over the range 418 to 591 +/- 0.5 K, leaving a residue

Determination 2

Vapour temperature (K)	Sample temperature (K)	Observations
295	294	The test material was a clear, colourless liquid
295	331	There was no change in the test material
299	381	There was no change in the test material
303	413	There was no change in the test material
311	439	There was no change in the test material
316	461	Convection currents were visible in the test material
323	500	There was no change in the test material
335	542	There was no change in the test material
346	555	The convection currents were more vigorous
349	570	Bubbles were being formed in the test material
363	599	The test material was bubbling gently
370	609	Ther test material was bubbling vigorously
377	614	Condensate had entered the condenser
453	621	The first drop of clear, colourless distillate was collected
485	624	1 ml of clear colourless distillate had been collected
523	626	5 ml of clear colourless distillate had been collected. White vapour had formed in the apparatus
541	632	10 ml of clear colourless distillate had been collected
559	634	20 ml of clear colourless distillate had been collected
569	>634	30 ml of clear colourless distillate had been collected
575	>634	40 ml of clear colourless distillate had been collected
580	>634	50 ml of clear colourless distillate had been collected
583	>634	60 ml of clear colourless distillate had been collected
586	>634	70 ml of clear colourless distillate had been collected
589	>634	80 ml of clear colourless distillate had been collected
590	>634	90 ml of clear colourless distillate had been collected
580	>634	95 ml of clear colourless distillate had been collected
553	>634	97 ml of clear colourless distillate had been collected
511	>634	Distillation had ceased. 98 ml of clear colourless distillate had been collected.
		On concluding the test, 1 ml of clear very pale liquid remained in the sample flask.

Boiled over the range 453 to 590 +/- 0.5 K, leaving a residue

Applicant's summary and conclusion

Conclusions:

Alkane 2 was found to boil over the range approximately 418 - 591 +/- 0.5 K at 102 kPa.

Executive summary:

The experimental procedure used complied with that specified in Method A2 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC).

Alkane 2 was found to boil over the range approximately 418 - 591 +/- 0.5 K at 102 kPa.