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 Code of Federal Regulations (Last Updated: May 6, 2024)
 Title 40 - Protection of Environment
 Chapter I - Environmental Protection Agency
 SubChapter C - Air Programs
 Part 63 - National Emission Standards for Hazardous Air Pollutants for Source Categories
 Subpart PPPP - National Emission Standards for Hazardous Air Pollutants for Surface Coating of Plastic Parts and Products

  Table 3 to Subpart PPPP of Part 63 - Default Organic HAP Mass Fraction for Solvents and Solvent Blends  

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  • Table 3 to Subpart PPPP of Part 63 - Default Organic HAP Mass Fraction for Solvents and Solvent Blends

    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 and which match either the solvent blend name or the chemical abstract series (CAS) number. If a solvent blend matches both the name and CAS number for an entry, that entry's organic HAP mass fraction must be used for that solvent blend. Otherwise, use the organic HAP mass fraction for the entry matching either the solvent blend name or CAS number, or use the organic HAP mass fraction from table 4 to this subpart if neither the name or CAS number match.

    Solvent/solvent blend CAS. No. Average organic
    HAP mass
    fraction     		Typical organic HAP,
    percent by mass
    1. Toluene 108-88-3 1.0 Toluene.
    2. Xylene(s) 1330-20-7 1.0 Xylenes, ethylbenzene.
    3. Hexane 110-54-3 0.5 n-hexane.
    4. n-Hexane 110-54-3 1.0 n-hexane.
    5. Ethylbenzene 100-41-4 1.0 Ethylbenzene.
    6. Aliphatic 140 0 None.
    7. Aromatic 100 0.02 1% xylene, 1% cumene.
    8. Aromatic 150 0.09 Naphthalene.
    9. Aromatic naphtha 64742-95-6 0.02 1% xylene, 1% cumene.
    10. Aromatic solvent 64742-94-5 0.1 Naphthalene.
    11. Exempt mineral spirits 8032-32-4 0 None.
    12. Ligroines (VM & P) 8032-32-4 0 None.
    13. Lactol spirits 64742-89-6 0.15 Toluene.
    14. Low aromatic white spirit 64742-82-1 0 None.
    15. Mineral spirits 64742-88-7 0.01 Xylenes.
    16. Hydrotreated naphtha 64742-48-9 0 None.
    17. Hydrotreated light distillate 64742-47-8 0.001 Toluene.
    18. Stoddard solvent 8052-41-3 0.01 Xylenes.
    19. Super high-flash naphtha 64742-95-6 0.05 Xylenes.
    20. Varsol ® solvent 8052-49-3 0.01 0.5% xylenes, 0.5% ethylbenzene.
    21. VM & P naphtha 64742-89-8 0.06 3% toluene, 3% xylene.
    22. Petroleum distillate mixture 68477-31-6 0.08 4% naphthalene, 4% biphenyl.