Regulations last checked for updates: Feb 22, 2025

Title 40 - Protection of Environment last revised: Nov 22, 2025
All TitlesTitle 40Chapter IPart 59Subpart EAppendix - Table 1 to Subpart E of Part 59—Product-Weighted Reactivity Limits by Coating Category
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Appendix - Table 1 to Subpart E of Part 59—Product-Weighted Reactivity Limits by Coating Category
Coating category Category code a Reactivity limit
(g O3/g product)
Art Fixatives or SealantsAFS1.75
Auto Body PrimersABP0.95
Automotive Bumper and Trim ProductsABT1.70
Aviation or Marine PrimersAMP1.25
Aviation Propeller CoatingsAPC1.40
Clear CoatingsCCP0.85
Corrosion Resistant Brass, Bronze, or Copper CoatingsCRB1.80
Electrical/Electronic/Conformal CoatingsECC2.00
Exact Match Finish—AutomotiveEFA0.95
Exact Match Finish—Engine EnamelEEE0.95
Exact Match Finish—IndustrialEFI1.20
Flat CoatingsFCP0.80
Flexible CoatingsFCC1.60
Floral SpraysFSP0.85
Fluorescent CoatingsFLP1.30
Glass CoatingsGCP1.35
Ground Traffic/MarkingGTM0.85
High Temperature CoatingsHTC1.85
Hobby/Model/Craft CoatingsHMC1.60
Marine Spar VarnishesMSV0.90
Metallic CoatingsMCP1.25
Mold Release CoatingMRC1.10
Non-Flat CoatingsNFP0.95
Photograph CoatingsPHC0.75
Pleasure Craft Primers, Surfacers or UndercoatersPCS0.90
Pleasure Craft TopcoatsPCT0.60
Polyolefin Adhesion PromotersPAP2.50
PrimersPCP0.70
Rust Converter CoatingRCC1.10
Shellac SealersSSC1.00
Slip-Resistant CoatingsSRC2.10
Spatter/Multicolor CoatingsSMC1.05
Two Component CoatingTWC1.20
Uniform Finish CoatingUFC1.30
Vinyl/Fabric/Leather/Polycarbonate CoatingsVFL1.45
Webbing/Veiling CoatingsWFC0.75
Weld-Through PrimersWTP1.00
Wood StainsWSP0.90
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]
authority: 42 U.S.C. 7414 and 7511b(e)
source: 64 FR 48815, Sept. 11, 1998, unless otherwise noted.
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