Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR Table 4 to Subpart OOOO of Part 63: Table 4 to Subpart OOOO 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 naphta 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.

Where this section sits in the code

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 OOOO—National Emission Standards for Hazardous Air Pollutants: Printing, Coating, and Dyeing of Fabrics and Other Textiles

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 naphta 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.

Collected 2026-08-27T02:26:04Z. Source file · JSON

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