Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 218 - ORGANIC MATERIAL EMISSION STANDARDS AND LIMITATIONS FOR THE CHICAGO AREA
Subpart A - GENERAL PROVISIONS
Section 218.111 - Vapor Pressure of Volatile Organic Material
Current through Register Vol. 48, No. 38, September 20, 2024
a) If the VOM consists of only a single compound, the vapor pressure shall be determined by ASTM Method D2879-86 (incorporated by reference in Section 218.112 of this Part) or the vapor pressure may be obtained from a publication such as: Boublik, T., V. Fried and E. Hala, "The Vapor Pressure of Pure Substances," Elsevier Scientific Publishing Co., New York (1973); Perry's Chemical Engineer's Handbook, McGraw-Hill Book Company (1984); CRC Handbook of Chemistry and Physics, Chemical Rubber Publishing Company (1986-87); and Lange's Handbook of Chemistry, John A. Dean, editor, McGraw-Hill Book Company (1985).
b) If the VOM is in a mixture made up of both VOM compounds and compounds which are not VOM, the vapor pressure shall be determined by the following equation:
where:
|
Pvom |
= |
Total vapor pressure of the portion of the mixture which is composed of VOM; |
|
n |
= |
Number of VOM components in the mixture; |
|
i |
= |
Subscript denoting an individual component; |
|
Pi |
= |
Vapor pressure of a VOM component determined in accordance with subsection (a) of this Section; |
|
Xi |
= |
Mole fraction of the VOM component of the total organic mixture. |
c) If the VOM is in a mixture made up of only VOM compounds, the vapor pressure shall be determined by ASTM Method D2879-86 (incorporated by reference in Section 218.112 of this Part) or by the above equation.
