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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
supporting study
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline followed
Principles of method if other than guideline:
no information
GLP compliance:
not specified
Type of method:
other: no information
Test no.:
#1
Temp.:
ca. 25 °C
Vapour pressure:
0.002 mm Hg
Conclusions:
According to Physical property data is provided to ChemIDplus by SRC, Inc., Vapour pressure of DBTU is about 2.38e-8 mmHg
Executive summary:

According to Physical property data is provided to ChemIDplus by SRC, Inc., Vapour pressure of DBTU is about 2.38e-8 mmHg

Description of key information

Three different sources are compared:

  • According to ACS calculation, vapour pressure of DBTU is about 2.03 .10-3 torr (0.266 Pa) at 25°C.
  • According to Physical property data is provided to ChemIDplus by SRC, Inc., Vapour pressure of DBTU is about 2.38e-8 mmHg (3.05 .10 -5 Pa)
  • According to the OECD Toolbox QSAR, VP of DBTU is about 0.00254 mmHg -- Vapor Pressure (Modified Grain Method) (EPISUITE). (0.338 Pa)

As a worst case value, VP of DBTU should be lower to 0.25 Pa at 25°C

Key value for chemical safety assessment

Vapour pressure:
0.25 Pa
at the temperature of:
25 °C

Additional information