- Table 3 to Subpart NNNN 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. |
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