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 Code of Federal Regulations (Last Updated: November 8, 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 QQQQ - National Emission Standards for Hazardous Air Pollutants: Surface Coating of Wood Building Products

  Table 5 to Subpart QQQQ of Part 63 - Default Organic HAP Mass Fraction for Solvents and Solvent Blends  

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  • Table 5 to Subpart QQQQ 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.

    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.