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Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
other: estimation
Adequacy of study:
key study
Study period:
January 2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The Estimations Programs Interface (EPI Suite)
Justification for type of information:
Estimation EPI v.11
Qualifier:
no guideline followed
Principles of method if other than guideline:
The program (MPBPWIN) estimates the boiling point (at 760 mm Hg), melting point and vapor pressure of organic compounds.  
MPBPWIN requires only a chemical structure to make these predictions.  
Structures are entered into MPBPWIN by SMILES (Simplified Molecular Input Line Entry System) notations.  
MPBPWIN can estimate vapor pressure at different temperatures.
MPBPWIN estimates vapor pressure (VP) by three separate methods: (1) the Antoine method, (2) the modified Grain method, and (3) the Mackay method.
GLP compliance:
no
Type of method:
other: estimation
Specific details on test material used for the study:
Constituent smiles
Key result
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
>= 0 - <= 0 Pa
Remarks on result:
other: estimated-UVCB

The components of the UVCB substance has been evaluated in its VP:


 

Conclusions:
Range of VP: 2.74E-009 - 8.07E-009 (Pa, 25 deg C)
Executive summary:

The Vapour pressure was estimated on the Fosfotex C16/C18 DEA constituents, with EPI Suite v.4.11

Range of VP:  2.74E-009 - 8.07E-009 (Pa, 25 deg C)

Description of key information

Range of estimated VP:   2.74E-009 - 8.07E-009

(Pa, 25 deg C)

VP(mm Hg,25 deg C): 2.06E-011 (Modified Grain method)

VP (Pa, 25 deg C) : 2.74E-009 (Modified Grain method)

VP(mm Hg,25 deg C): 6.06E-011 (Modified Grain method)

VP (Pa, 25 deg C) : 8.07E-009 (Modified Grain method)

Key value for chemical safety assessment

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

Additional information

The Vapour pressure was estimated based on its constituents, with EPI Suite v.4.11, MPBPWIN.

Range of estimated of the major constituents is between   8.07E-009 -2.74E-009

(Pa, 25 deg C).