40 CFR Appendix Table 6 to Subpart QQQQ of Part 63, Default Organic HAP Mass Fraction for Petroleum Solvent Groups a

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Table 6 to Subpart QQQQ of Part 63 - Default Organic HAP Mass Fraction for Petroleum Solvent Groups a

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 type Average organic HAP mass fraction Typical organic HAP, percent by mass
Aliphatic b 0.03 1% xylene, 1% toluene, and 1% ethylbenzene.
Aromatic c 0.06 4% xylene, 1% toluene, and 1% ethylbenzene.

a Use this table only if the solvent blend does not match any of the solvent blends in Table 5 to this subpart and you only know whether the blend is aliphatic or aromatic.

bE.g., Mineral Spirits 135, Mineral Spirits 150 EC, Naphtha, Mixed Hydrocarbon, Aliphatic Hydrocarbon, Aliphatic Naphtha, Naphthol Spirits, Petroleum Spirits, Petroleum Oil, Petroleum Naphtha, Solvent Naphtha, Solvent Blend.

cE.g., Medium-flash Naphtha, High-flash Naphtha, Aromatic Naphtha, Light Aromatic Naphtha, Light Aromatic Hydrocarbons, Aromatic Hydrocarbons, Light Aromatic Solvent.

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Title 40 published on 2015-08-22

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 63 after this date.

  • 2017-01-18; vol. 82 # 11 - Wednesday, January 18, 2017
    1. 82 FR 5401 - National Emission Standards for Hazardous Air Pollutants: Ferroalloys Production
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      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; notice of final action on reconsideration.
      This final action is effective on January 18, 2017. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register as of January 18, 2017.
      40 CFR Part 63

Title 40 published on 2015-08-22.

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2017-01-18; vol. 82 # 11 - Wednesday, January 18, 2017
    1. 82 FR 5401 - National Emission Standards for Hazardous Air Pollutants: Ferroalloys Production
      GPO FDSys: XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; notice of final action on reconsideration.
      This final action is effective on January 18, 2017. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register as of January 18, 2017.
      40 CFR Part 63