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Physical & Chemical properties

Vapour pressure

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Description of key information

Vapour pressures of 7263 Pa at 20 °C and 9273 Pa at 25 °C were determined.

Key value for chemical safety assessment

Vapour pressure:
7 263 Pa
at the temperature of:
20 °C

Additional information

The vapour pressure of reaction mass of 2,2'-oxybisbutane (DSBE), DIPE, SBA and 2-methyl­propan-2-ol (TBA) was determined using the static method according to the OECD 104 resp. EU A.4 guideline under GLP.

Vapour pressures of 7263 Pa at 20 °C and 9273 Pa at 25 °C were determined.

These values were calculated from the regression of 18 individual measurements.

The vapor pressure of the reaction mass is within the range of the vapor pressures of the individual components, 2170 -2970 Pa for DSBE (1), 19900 Pa for DIPE (2), 2440 Pa for SBA (3) and 4100 -5400 Pa for TBA (4) (all values at 25°C).


(1) HIGH PRODUCTION VOLUME (HPV) CHEMICAL CHALLENGE PROGRAM TEST PLAN For sec-Butyl Ether CAS NO. 6863-58-7, Prepared by: ExxonMobil Chemical CompanyNovember 28,2006

(2) ExxonMobil Chemical Company Shell Chemical LP For: American Chemistry Council, lsopropanol Panel, Diisopropyl Ether HPV Task GroupDecember 12,2005

(3) OECD SIDS Dossier for Butan-2 -ol, CAS No.78 -92 -2,ExxonMobil Biomedical Sciences Inc.,09.01.2002

(4) Robust Summaries for t-Butanol, CAS Number 75 -65 -O USEPA HPV Challenge Program SubmissionApril 10, 2002