{"data":{"id":"us/40-cfr-table-3-to-subpart-rrrr-of-part-63","jurisdiction":"us","citation":"40 CFR Table 3 to Subpart RRRR of Part 63","heading":"Table 3 to Subpart RRRR of Part 63—Default Organic HAP Mass Fraction for Solvents and Solvent Blends","body":"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:\nSolvent/Solvent blend CAS. No. Average organic HAP mass fraction Typical organic HAP, percent by mass\n1. Toluene 108-88-3 1.0 Toluene.\n2. Xylene(s) 1330-20-7 1.0 Xylenes, ethylbenzene.\n3. Hexane 110-54-3 0.5 n-hexane.\n4. n-Hexane 110-54-3 1.0 n-hexane.\n5. Ethylbenzene 100-41-4 1.0 Ethylbenzene.\n6. Aliphatic 140 0 None.\n7. Aromatic 100 0.02 1% xylene, 1% cumene.\n8. Aromatic 150 0.09 Naphthalene.\n9. Aromatic naphtha 64742-95-6 0.02 1% xylene, 1% cumene.\n10. Aromatic solvent 64742-94-5 0.1 Naphthalene.\n11. Exempt mineral spirits 8032-32-4 0 None.\n12. Ligroines (VM \u0026 P) 8032-32-4 0 None.\n13. Lactol spirits 64742-89-6 0.15 Toluene.\n14. Low aromatic white spirit 64742-82-1 0 None.\n15. Mineral spirits 64742-88-7 0.01 Xylenes.\n16. Hydrotreated naphtha 64742-48-9 0 None.\n17. Hydrotreated light distillate 64742-47-8 0.001 Toluene.\n18. Stoddard solvent 8052-41-3 0.01 Xylenes.\n19. Super high-flash naphtha 64742-95-6 0.05 Xylenes.\n20. Varsol ® solvent 8052-49-3 0.01 0.5% xylenes, 0.5% ethyl benzene.\n21. VM \u0026 P naphtha 64742-89-8 0.06 3% toluene, 3% xylene.\n22. Petroleum distillate mixture 68477-31-6 0.08 4% naphthalene, 4% biphenyl.","path":["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 RRRR—National Emission Standards for Hazardous Air Pollutants: Surface Coating of Metal Furniture"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"335bc4f42de781d119cc020a6388c09b487e0332936f61b5fb99ada4cc4ee4e5","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-2-to-subpart-rrrr-of-part-63","next":"us/40-cfr-table-4-to-subpart-rrrr-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}