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Table 4 to Subpart IIII of Part 63 - Default Organic HAP Mass Fraction for Petroleum Solvent Groups a

RegSenseCFR RegulationsEnvironmental Protection Agency (EPA)Hazardous Air PollutantsEnvironmentalAir QualityFocus AreaUSAEnglishAir ProgramsCFR Appendix

You may use the mass fraction values in the following table for solvent blends for which you do not have test data or manufacturer's formulation data

Solvent type Average
organic HAP
mass fraction 		Typical organic HAP, percent by mass
a Use this table only if the solvent blend does not match any of the solvent blends in Table 3 to this subpart, and you only know whether the blend is aliphatic or aromatic.
bE.g., Mineral Spirits 135, Mineral Spirits 150 EC, Naphtha, Mixed Hydrocarbon, Aliphatic Hydrocarbon, Aliphatic Naphtha, Naphthol Spirits, Petroleum Spirits, Petroleum Oil, Petroleum Naphtha, Solvent Naphtha, Solvent Blend.
cE.g., Medium-flash Naphtha, High-flash Naphtha, Aromatic Naphtha, Light Aromatic Naphtha, Light Aromatic Hydrocarbons, Aromatic Hydrocarbons, Light Aromatic Solvent.
Aliphatic b 0.03 1% Xylene, 1% Toluene, and 1% Ethylbenzene.
Aromatic c 0.06 4% Xylene, 1% Toluene, and 1% Ethylbenzene.
['Air Programs']
['Hazardous Air Pollutants']
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