Octanoic acid, monoester with glycerol

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

calculation (if not (Q)SAR)

Remarks:

Migrated phrase: estimated by calculation

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: acceptable calculation method

Qualifier:

no guideline followed

Principles of method if other than guideline:

Vapor Pressure is estimated by calculation. Three methods are employed; all three methods use the boiling point.
1.) Antoine method (reference: Chapter 14 of W.J. Lyman's book "Handbook of Chemical Property Estimation Methods", Washington, DC: American Chemical Society, 1990).
2.) Modified Grain method (reference: Page 31 of Neely and Blau's Environmental Exposure from Chemicals, Volume I, CRC Press, 1985)
3.) Mackay method (reference: Page 31-2 of Neely and Blau's Environmental Exposure from Chemicals, Volume I, CRC Press, 1985).
For solids, a melting point is required to adjust the vapor pressure from a subcooled (supercooled) liquid to a solid.  

Type of method:

other: calculation

Temp.:

25 °C

Vapour pressure:

0.001 Pa

Remarks on result:

other: EPISUITE estimation (modified Grain Method), value for liquids

Executive summary:

Vapour pressure of octanoic acid, monoester with glycerol was estimated to be 0.00116 Pa at 25°C using US EPA EPI Suite 4.11. Principle of calculation is the modified Grain method. Result is calculated for liquids (subcooled liquid VP).

Description of key information

Principle of calculation is the modified Grain method. Result is calculated for liquids (subcooled liquid VP).

Key value for chemical safety assessment

Vapour pressure:

0.001 Pa

at the temperature of:

25 °C