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Physical & Chemical properties

Vapour pressure

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Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
weight of evidence
Study period:
November 21, 2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
Calaculated value from an acceptable method.
Principles of method if other than guideline:
Value calculated by an acceptable method.
GLP compliance:
no
Type of method:
other: Calculated value
Temp.:
25 °C
Vapour pressure:
0.137 Pa
Remarks on result:
other: Calculated value
Remarks:
Modified Grain Method

MPBPVP (v1.43) Program Results:

===============================

Experimental Database Structure Match:  no data

SMILES : CCCCCCCCCC(=O)OCCOCCOCCOC(=O)CCCCCCC

CHEM   : Decanoic acid, mixed diesters with octanoic acid and triethylene glyc

        ol

MOL FOR: C24 H46 O6

MOL WT : 430.63

------------------------ SUMMARY MPBVP v1.43 --------------------

Boiling Point:  440.52 deg C (Adapted Stein and Brown Method)

Melting Point:   86.20 deg C (Adapted Joback Method)

Melting Point:  143.56 deg C (Gold and Ogle Method)

Mean Melt Pt :  114.88 deg C (Joback; Gold,Ogle Methods)

 Selected MP:   95.76 deg C (Weighted Value)

Vapor Pressure Estimations (25 deg C):

 (Using BP: 312.00 deg C (user entered))

 (MP not used for liquids)

   VP:  0.000726 mm Hg (Antoine Method)

     :  0.0968 Pa  (Antoine Method)

   VP:  0.00103 mm Hg (Modified Grain Method)

     :  0.137 Pa  (Modified Grain Method)

   VP:  0.00197 mm Hg (Mackay Method)

     :  0.263 Pa  (Mackay Method)

 Selected VP:  0.00103 mm Hg (Modified Grain Method)

            :  0.137 Pa (Modified Grain Method)

-------+-----+--------------------+----------+---------

TYPE  | NUM |  BOIL DESCRIPTION  |  COEFF   |  VALUE  

-------+-----+--------------------+----------+---------

Group |  2  |  -CH3              |   21.98  |   43.96

Group | 20  |  -CH2-             |   24.22  |  484.40

Group |  2  |  -O- (nonring)     |   25.16  |   50.32

Group |  2  |  -COO- (ester)     |   78.85  |  157.70

Corr  |  1  |  Diester-type      |  -35.00  |  -35.00

  *   |     |  Equation Constant |          |  198.18

=============+====================+==========+=========

RESULT-uncorr|  BOILING POINT in deg Kelvin  |  899.56

RESULT- corr |  BOILING POINT in deg Kelvin  |  713.68

            |  BOILING POINT in deg C       |  440.52

-------------------------------------------------------

-------+-----+--------------------+----------+---------

TYPE  | NUM |  MELT DESCRIPTION  |  COEFF   |  VALUE  

-------+-----+--------------------+----------+---------

Group |  2  |  -CH3              |   -5.10  |  -10.20

Group | 20  |  -CH2-             |   11.27  |  225.40

Group |  2  |  -O- (nonring)     |   22.23  |   44.46

Group |  2  |  -COO- (ester)     |   53.60  |  107.20

Corr  |  1  |  Diester-type      | -130.00  | -130.00

  *   |     |  Equation Constant |          |  122.50

=============+====================+==========+=========

  RESULT    |  MELTING POINT in deg Kelvin  |  359.36

            |  MELTING POINT in deg C       |   86.20

-------------------------------------------------------

Description of key information

Vapor pressure data are available for two read-across chemicals. These chemicals are included in the Glycol Esters Category submitted by the American Chemistry Council for the U.S. Environmental Protection Agency as a contribution to the U.S. EPA High Production Volume Chemical Program. All members of this category have similar molecular structure and functional groups. The functional groups in common are aliphatic ester groups and glycol ether groups. The glycol ether groups, joined together in one to four units, are end-capped with aliphatic acids via ester groups. The selected read-across chemicals most closely matches in structure the subject registration substance. The low vapor pressure of the read-across chemical is consistent with its high boiling point.

The MPBPWIN module (v1.43) of the U.S. EPA EpiSuite program (Copyright 2000 -2012) was used to calculate a vapor pressure for the subject chemical. The value obtained bu this method was 0.137 Pa (Modified Grain Method) and is consistent with the values for the other similar read-across chemical.

Key value for chemical safety assessment

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

Additional information