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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
yes
Type of method:
effusion method: vapour pressure balance
Key result
Temp.:
ca. 25 °C
Vapour pressure:
136 Pa
Conclusions:
The vapor pressure of the test item has been determined to be 136 Pa at 25 ºC.
Executive summary:

The vapor pressure of Formaldehyde, oligomeric reaction products with 4,4'-isopropylidenediphenol and diethylenetriamine (EK110) has been determined to be 136 Pa at 25 °C, using the vapor pressure balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008, and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.  There was a general drop in vapor pressure observed on repeated temperature cycling of the test item with

individual values in the range 136 to 25 Pa at 25°C for nine consecutive runs. Such characteristics, indicative of the gradual reduction of a more volatile fraction in the test item was as anticipated based on the complex composition of the test item.   To provide representative data for risk assessment on accidental release of the test item, the highest value obtained has been taken as the definitive result.

Description of key information

The vapor pressure of the test item has been determined to be 136 Pa at 25 ºC.

Key value for chemical safety assessment

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

Additional information