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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The vapor pressure curve of isophorone diisocyanate has been measured with a vapor pressure balance in satisfactory accordance to OECD TG 104 at temperatures between 9.5 °C and 44.1 °C. The Antoine equation obtained by least-squares fit is:
VP [hPa] = 10**(31.84-23124/(T+639.99)
This corresponds to 0.000635 hPa at 20 °C, 0.00117 hPa at 25 °C and 0.0212 hPa at 50 °C

Key value for chemical safety assessment

Vapour pressure:
0.063 Pa
at the temperature of:
23 °C

Additional information

The acceptable restrictions of the key study (guideline study) should be noted: Insufficient characterization of test substance (identity, purity), significant scattering of results.

Evidence for the reliability of this study comes from:

- QSAR check with MpBpWin v1.41 from the EPIWIN software suite (v3.11) predicts 0.00115 Torr (0.0015 hPa) at 25 °C, which is in satisfactory agreement.