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Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Study period:
2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
yes
Remarks:
see "Principles of method if other than guideline"
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
yes
Remarks:
see "Principles of method if other than guideline"
Principles of method if other than guideline:
Estimation procedure in accordance with the test method OECD Guideline 104 "OECD Guideline For The Testing Of Chemicals, adopted by the Council on 23 March 2006, Vapour Pressure" ANNEX Estimation Method newest version (R.S: Boethling, D. Mackay, Handbook of Property Estimation Methods for Chemicals, Lewis Publishers, 2000, Cap. 3 - Vapour Pressure, Grain-Watson Method, p.53-65) was used. This method is applied for vapour pressures between 1E+03 to 1E-07 mbar. This deviates from the older version published in OECD Guideline 104 and it was used due to the differentiation between solids and liquids, which results in a more precise estimate.
GLP compliance:
no
Type of method:
other: Grain-Watson estimation. For the preliminary estimation, DSC method was used.
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
<= 0.028 Pa
Test no.:
#2
Temp.:
50 °C
Vapour pressure:
<= 0.84 Pa
Conclusions:
Hexadecan-1-ol, ethoxylated, <2.5 EO has a vapour pressure of <= 0.028 Pa at 20 °C and 0.84 Pa at 50 °C.

Description of key information

The vapour pressure of the substance is estimated as < 0.028 Pa at 20 °C (calculation method in accordance to EU A.4 and OECD 104)

Key value for chemical safety assessment

Vapour pressure:
0.028 Pa
at the temperature of:
20 °C

Additional information

The Grain-Watson method was used for calculation. In addition, the vapour pressure of < 0.84 Pa was calculated at 50 °C.