- Table 3 to Subpart IIII 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. Toluene108-88-31.0Toluene. 2. Xylene(s)1330-20-71.0Xylenes, ethylbenzene. 3. Hexane110-54-30.5n-hexane. 4. n-Hexane110-54-31.0n-hexane. 5. Ethylbenzene100-41-41.0Ethylbenzene. 6. Aliphatic 1400None. 7. Aromatic 1000.021% xylene, 1% cumene. 8. Aromatic 1500.09Naphthalene. 9. Aromatic naphtha64742-95-60.021% xylene, 1% cumene. 10. Aromatic solvent64742-94-50.1Naphthalene. 11. Exempt mineral spirits8032-32-40None. 12. Ligroines (VM & P)8032-32-40None. 13. Lactol spirits64742-89-60.15Toluene. 14. Low aromatic white spirit64742-82-10None. 15. Mineral spirits64742-88-70.01Xylenes. 16. Hydrotreated naphtha64742-48-90None. 17. Hydrotreated light distillate64742-47-80.001Toluene. 18. Stoddard solvent8052-41-30.01Xylenes. 19. Super high-flash naphtha64742-95-60.05Xylenes. 20. Varsol ® solvent8052-49-30.010.5% xylenes, 0.5% ethylbenzene. 21. VM & P naphtha64742-89-80.063% toluene, 3% xylene. 22. Petroleum distillate mixture68477-31-60.084% naphthalene, 4% biphenyl.