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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Basic data given
Principles of method if other than guideline:
Two methods were used:
1. for temperatures between 30° and 60°C, Menzies's method was used,
2. For temperatures between 90° and 145°C, the vapour pressure was measured
directly on a mercury manometer
GLP compliance:
no
Type of method:
dynamic method
Temp.:
26.6 °C
Vapour pressure:
0.001 hPa
RS-Freetext:
Observed values are in the range of 0.000041 - 13.2 hPa at a temperature of 1.5-143.2 °C.
Executive summary:

The vapour pressure of phthalic anhydride is 0.0006 hPa at 26.6°C (Crooks,1946).

Description of key information

The vapour pressure of phthalic anhydride is 0.0006 hPa at 26.6°C (Crooks,1946).

Key value for chemical safety assessment

Vapour pressure:
0.001 hPa
at the temperature of:
26.6 °C

Additional information