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Ammonium Sulfate Manufacture: New Source Performance Standards (NSPS)

Ammonium Sulfate Manufacture: New Source Performance Standards (NSPS)
Basic Information
Legal Authorities
  • 42 U.S.C. §7411
  • 42 U.S.C. §7601(a)
Federal Register Citations
  • 45 FR 7758
  • 45 FR 74846
  • 50 FR 9055
Code of Federal Regulations Citations
  • 40 CFR Part 60 Subpart PP
Docket Numbers
  • EPA-HQ-OAR-2004-0129
  • EPA-HQ-OAR-2004-0149

On this page:

  • Rule Summary
  • Rule History

Rule Summary

Ammonium sulfate ((NH4)2SO4)  is an inorganic salt that can be used in the manufacturing of many different products, including but not limited to, soil fertilizer, cleaning and furnishing care products, and laundry detergent.

The New Source Performance Standards for Ammonium Sulfate Manufacturing regulates emissions of particulate matter (PM) from new, modified, and reconstructed ammonium sulfate dryers at caprolactam by-product ammonium sulfate plants, synthetic ammonium sulfate plants, and coke oven by-product ammonium sulfate plants.

See the regulations below for more details.

Rule History

02/04/1980 - Proposed Rule & Notice of Public Hearing

11/12/1980 - Final Rule

03/06/1985 - Review of Standards

Stationary Sources of Air Pollution

  • Regulations
    • Industry Sector Groups
    • National Emission Standards for Hazardous Air Pollutants (NESHAP)
      • Area Source Standards
      • Risk and Technology Review Status
    • New Source Performance Standards
    • Good Neighbor Plan for the 2015 Ozone National Ambient Air Quality Standards
  • Small Business Assistance Program
Contact Us About Stationary Sources of Air Pollution
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Last updated on February 18, 2025
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