40 CFR Part 63, Table 3
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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 organicHAP massfraction | Typical organic HAP,percent by mass |
|---|---|---|---|
| 1. Toluene | 108-88-3 | 1 | Toluene. |
| 2. Xylene(s) | 1330-20-7 | 1 | Xylenes, ethylbenzene. |
| 3. Hexane | 110-54-3 | 0.5 | n-hexane. |
| 4. n-Hexane | 110-54-3 | 1 | n-hexane. |
| 5. Ethylbenzene | 100-41-4 | 1 | 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. |