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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Study period:
15 Feb 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Acceptable, well-documented study report which meets basic scientific principles.
Principles of method if other than guideline:
Calculated limit value according to column 2 in Annex VII of Regulation (EC) No 1907/2006 (melting point - here: decomposition temperature -between 200°C and 300°C, see section 4.2).
Type of method:
other: estimate
Temp.:
25 °C
Vapour pressure:
< 0 Pa

Software output:

Experimental Database Structure Match: no data

SMILES : O=C(Nc(cccc1)c1)c(c(O)c(N=Nc(c(ccc2CL)CL)c2)c(c3ccc4)c4)c3

CHEM  : 2-Naphthalenecarboxamide, 4- (2,5-dichlorophenyl)azo -3-hydroxy-N-phenyl-

MOL FOR: C23 H15 CL2 N3 O2

MOL WT : 436.30

------------------------ SUMMARY MPBPWIN v1.43 --------------------

Boiling Point: 635.77 deg C (Adapted Stein and Brown Method)

Melting Point: 349.84 deg C (Adapted Joback Method)

Melting Point: 257.57 deg C (Gold and Ogle Method)

Mean Melt Pt : 303.70 deg C (Joback; Gold,Ogle Methods)

 Selected MP: 276.02 deg C (Weighted Value)

Vapor Pressure Estimations (25 deg C):

 (Using BP: 635.77 deg C (estimated))

 (Using MP: 276.02 deg C (estimated))

   VP: 5.14E-021 mm Hg (Antoine Method)

     : 6.86E-019 Pa (Antoine Method)

   VP: 9.48E-016 mm Hg (Modified Grain Method)

     : 1.26E-013 Pa (Modified Grain Method)

   VP: 5.86E-014 mm Hg (Mackay Method)

     : 7.82E-012 Pa (Mackay Method)

 Selected VP: 9.48E-016 mm Hg (Modified Grain Method)

            : 1.26E-013 Pa(Modified Grain Method)

 Subcooled liquid VP: 5.56E-013 mm Hg (25 deg C, Mod-Grain method)

                    : 7.41E-011 Pa (25 deg C, Mod-Grain method)

Interpretation:

On the basis of the vapour pressure of 1.26 x 10-13 Pa selected in the software output, a limit value of <0.000001 Pa is chosen.
Conclusions:
The vapour pressure of the submission substance is estimated to be far below 0.000001 Pa.
Executive summary:

The vapour pressure of the submission substance was estimated by calculation in accordance with column 2 in Annex VII of Regulation (EC) No 1907/2006 by a calculation method recommended by the Guidance on Information Requirements and Chemical Safety Assessment (chapter R.7.1.5.3), MPBPVP of the EPI Suite (TM) software by the US Environmental Protection Agency (EPA, 2011).

The calculated vapour pressure value at 25°C is far below the chosen limit value of 0.000001 Pa.

Description of key information

The vapour pressure of the submission substance was estimated by calculation in accordance with column 2 in Annex VII of Regulation (EC) No 1907/2006 by a calculation method recommended by the Guidance on Information Requirements and Chemical Safety Assessment (chapter R.7.1.5.3), MPBPVP of the EPI Suite (TM) software by the US Environmental Protection Agency (EPA, 2011).


The calculated vapour pressure value at 25°C is far below the chosen limit value of 0.000001 Pa.

Key value for chemical safety assessment

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

Additional information

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