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Physical & Chemical properties

Boiling point

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Description of key information

34.59 °C (ebulliometer, Gillo)

34.6 °C (Merck)

34.55 °C (307.7 ±0.2 K, literature average (n = 19), NIST Chemistry Webbook)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
307.8 K

Additional information

The study by Gillo (1936) is in excellent agreement with handbook data (Merck, 2001) and a survey of published literature values (n = 15) carried out by the NIST (; see literature search for further available data).

The boiling point is very close to the classification and labelling cut-off for classification as a flammable liquid. The results reported by Gillo were reported to 0.01 °C, and considering the excellent agreement with other workers, are reliable enough for classification and labelling. The study by Gillo was detailed, well documented, and addressed the relevant quality criteria for boiling point measurements. The study was carried out for the express purpose of generating high-quality data for the use as an organic-solvent standard. As a result, testing does not appear scientifically necessary based on the use of existing data and, given the above points, the criteria in Regulation (EC) No. 1907/2006, Annex XI, 1.1.1 are considered to be met.