StacksVerified U.S. regulatory reference

40 CFR Part 59, Table 1

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Coating categoryCategory code aReactivity limit (g O3/g product)
Art Fixatives or SealantsAFS1.75
Auto Body PrimersABP0.95
Automotive Bumper and Trim ProductsABT1.7
Aviation or Marine PrimersAMP1.25
Aviation Propeller CoatingsAPC1.4
Clear CoatingsCCP0.85
Corrosion Resistant Brass, Bronze, or Copper CoatingsCRB1.8
Electrical/Electronic/Conformal CoatingsECC2
Exact Match Finish—AutomotiveEFA0.95
Exact Match Finish—Engine EnamelEEE0.95
Exact Match Finish—IndustrialEFI1.2
Flat CoatingsFCP0.8
Flexible CoatingsFCC1.6
Floral SpraysFSP0.85
Fluorescent CoatingsFLP1.3
Glass CoatingsGCP1.35
Ground Traffic/MarkingGTM0.85
High Temperature CoatingsHTC1.85
Hobby/Model/Craft CoatingsHMC1.6
Marine Spar VarnishesMSV0.9
Metallic CoatingsMCP1.25
Mold Release CoatingMRC1.1
Non-Flat CoatingsNFP0.95
Photograph CoatingsPHC0.75
Pleasure Craft Primers, Surfacers or UndercoatersPCS0.9
Pleasure Craft TopcoatsPCT0.6
Polyolefin Adhesion PromotersPAP2.5
PrimersPCP0.7
Rust Converter CoatingRCC1.1
Shellac SealersSSC1
Slip-Resistant CoatingsSRC2.1
Spatter/Multicolor CoatingsSMC1.05
Two Component CoatingTWC1.2
Uniform Finish CoatingUFC1.3
Vinyl/Fabric/Leather/Polycarbonate CoatingsVFL1.45
Webbing/Veiling CoatingsWFC0.75
Weld-Through PrimersWTP1
Wood StainsWSP0.9
Wood Touch-up/Repair or Restoration CoatingsWTR1.45

a Regulated entities may use these category codes or define their own in accordance with § 59.511(b)(6).

[77 FR 14283, Mar. 9, 2012, as amended at 90 FR 5710, Jan. 17, 2025]