FRI: Free-radical initiator coverage
Indicates a polymeric substance containing no free-radical initiator in its Inventory name but is considered to cover the designated polymer made with any free-radical initiator regardless of the amount used.
15,390 substances carry it in the July 2026 release, of which 6,100 are designated active.
What it obliges
Nothing directly. It widens what the listing covers, so a polymer made with a different initiator is still the listed substance rather than a new one.
Substances carrying FRI
Showing 100 of 15,390, active substances first. Search the full Inventory for a specific one.
| CAS number | Substance | Status | Other flags |
|---|---|---|---|
| 119209-70-0 | Rosin, polymer with formaldehyde, glycerol and 4-(1,1,3,3-tetramethylbutyl)phenol | Active | PMN XU Y1 UVCB |
| 100486-94-0 | Hexanedioic acid, polymer with N1-(2-aminoethyl)-1,2-ethanediamine, 2-butene-1,4-diol, 1,6-diisocyanatohexane, 1,2-ethanediol, 1,3-isobenzofurandione, 2-methyloxirane, oxirane and sodium sulfite (1:1), 2-(2-butoxyethoxy)ethanol-blocked | Active | PMN XU UVCB |
| 100916-02-7 | Castor oil, polymer with polymethylenepolyphenylene isocyanate and polypropylene glycol | Active | PMN XU UVCB |
| 101316-90-9 | Ethene, 1,1,2,2-tetrafluoro-, oxidized, polymd., reduced, Me esters, reduced, acrylates | Active | PMN XU UVCB |
| 102322-80-5 | 2-Propenoic acid, 2-methyl-, methyl ester, homopolymer, reaction products with ammonia | Active | PMN XU UVCB |
| 102343-97-5 | Benzene, ethenyl-, homopolymer, sulfonated | Active | PMN XU UVCB |
| 102763-23-5 | Propanedioic acid, 1,3-diethyl ester, reaction products with 1,6-diisocyanatohexane homopolymer, ethyl acetoacetate, 2-ethyl-1,3-hexanediol and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane homopolymer | Active | PMN XU UVCB |
| 102782-61-6 | Siloxanes and Silicones, di-Me, 3-hydroxypropyl Me | Active | PMN XU UVCB |
| 102782-92-3 | Siloxanes and Silicones, 3-[(2-aminoethyl)amino]propyl Me, di-Me, methoxy-terminated | Active | PMN XU UVCB |
| 102782-93-4 | Siloxanes and Silicones, di-Me, lauryl Me, Me myristyl | Active | PMN XU UVCB |
| 102782-97-8 | Siloxanes and Silicones, di-Me, 3-(2-oxiranylmethoxy)propyl group-terminated | Active | PMN XU UVCB |
| 102900-02-7 | Alcohols, C6-10, ethoxylated propoxylated, fumarated, sodium salts | Active | PMN XU UVCB |
| 102900-03-8 | Oxirane, 2-methyl-, polymer with oxirane, ether with 1,2-propanediol (2:1), polymer with 1,3-diisocyanatomethylbenzene, nonylphenol-blocked | Active | PMN XU UVCB |
| 103170-26-9 | Cyclohexane, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethyl-, homopolymer, Me Et ketone oxime-blocked | Active | PMN XU UVCB |
| 103621-98-3 | Fatty acids, soya, polymers with benzoic acid, glycerol, pentaerythritol, phthalic anhydride and tall-oil fatty acids | Active | XU Y1 UVCB |
| 104133-73-5 | Amines, tallow alkyl, reaction products with bisphenol A diglycidyl ether, ethoxylated | Active | PMN XU UVCB |
| 104376-75-2 | Poly(oxy-1,2-ethanediyl), .alpha.-phenyl-.omega.-hydroxy-, styrenated | Active | PMN XU UVCB |
| 109037-68-5 | Amines, N,N'-ditallow alkyl[1,2-ethanediylbis(imino-3,1-propanediyl)]di-, ethoxylated propoxylated | Active | PMN XU UVCB |
| 109037-71-0 | Siloxanes and Silicones, 3-aminopropyl Me, lauryl Me, Me 2-phenylpropyl | Active | PMN XU UVCB |
| 109961-31-1 | Fatty acids, C18-unsatd., dimers, polymers with dodecylphenol, formaldehyde, maleic anhydride, pentaerythritol and rosin | Active | XU Y1 UVCB |
| 109961-32-2 | Fatty acids, dehydrated castor-oil, polymers with benzoic acid, glycerol, pentaerythritol, phthalic anhydride and soya fatty acids | Active | XU Y1 UVCB |
| 109961-35-5 | Fatty acids, tall-oil, polymers with adipic acid, isophthalic acid, neopentyl glycol, trimellitic anhydride and trimethylolethane | Active | XU Y1 UVCB |
| 109961-36-6 | Fatty acids, tall-oil, polymers with benzoic acid, isophthalic acid, linoleic acid and pentaerythritol | Active | XU Y1 UVCB |
| 109961-41-3 | Siloxanes and Silicones, di-Me, polymers with Ph silsesquioxanes, hydroxy-terminated | Active | PMN XU UVCB |
| 109961-42-4 | 2-Propenenitrile, polymer with 1,2,4-triethenylcyclohexane, hydrolyzed | Active | PMN XU UVCB |
| 109981-10-4 | 2-Propenoic acid, 2-methyl-, C12-15-alkyl esters, polymers with N-[3-(dimethylamino)propyl]-2-methyl-2-propenamide and Me methacrylate | Active | PMN XU UVCB |
| 110015-93-5 | 2-Propenoic acid, 2-methyl-, C12-20-alkyl esters, polymers with isodecyl methacrylate, Me methacrylate and vinylpyrrolidone | Active | PMN XU UVCB |
| 110475-02-0 | Siloxanes and Silicones, di-Me, [[(3-aminopropyl)dimethoxysilyl]oxy]-terminated | Active | PMN XU UVCB |
| 110475-03-1 | Siloxanes and Silicones, di-Me, Me 3-[[(1-oxooctadecyl)amino]propyl | Active | PMN XU UVCB |
| 110475-04-2 | Siloxanes and Silicones, di-Me, Me 3,3,3-trifluoropropyl, hydroxy- and vinyl group-terminated | Active | PMN XU UVCB |
| 110615-50-4 | 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,1'-methylenebis[4-isocyanatobenzene], cresol-, phenol- and xylenol-blocked | Active | PMN XU UVCB |
| 110720-64-4 | Siloxanes and Silicones, 3-aminopropyl Me, Me stearyl | Active | PMN XU UVCB |
| 110775-80-9 | Siloxanes and Silicones, di-Me, di-Ph, polymers with Me Ph silsesquioxanes, hydroxy-terminated | Active | PMN XU UVCB |
| 111353-95-8 | Fatty acids, C18-unsatd., dimers, polymers with adipic acid, ethylene glycol, isophthalic acid, neopentyl glycol, propylene glycol and terephthalic acid | Active | XU Y1 UVCB |
| 113221-69-5 | 2-Propenoic acid, ethyl ester, polymer with ethenyl acetate and 2,5-furandione, hydrolyzed | Active | PMN XU UVCB |
| 113355-05-8 | Siloxanes and Silicones, di-Me, polymers with Me Ph silsesquioxanes, hydroxy-terminated | Active | PMN XU UVCB |
| 114553-41-2 | Siloxanes and Silicones, di-Me, 3-(2-hydroxyethoxy)propyl group-terminated, polymers with adipic acid, 1,3-butanediol, 1,4-butanediol, 1,6-hexanediol and 1,1'-methylenebis[4-isocyanatobenzene] | Active | PMN XU UVCB |
| 114553-48-9 | Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with 1,6-diisocyanatohexane, Me Et ketone oxime-blocked, compds. with triethylamine | Active | PMN XU UVCB |
| 114793-01-0 | 1,2-Ethanediol, polymer with 1,3-diisocyanatomethylbenzene, 2-ethyl-1-hexanol- and methanol-blocked | Active | PMN XU UVCB |
| 115001-58-6 | Acetic acid ethenyl ester, homopolymer, hydrolyzed, reaction products with 4-methylene-2-oxetanone | Active | PMN XU UVCB |
| 115019-51-7 | Fatty acids, C8-18 and C18-unsatd., diesters with polyethylene glycol ether with bisphenol A (2:1) | Active | PMN XU UVCB |
| 115271-30-2 | Hexanedioic acid, polymer with 1,4-butanediol, 1,6-diisocyanatohexane, 1,2-ethanediamine, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, .alpha.,.alpha.'-[(1-methylethylidene)di-4,1-phenylene]bis[.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)]] and 2-methyloxirane, polyethylene-polypropylene glycol mono-Bu ether-blocked | Active | PMN XU UVCB |
| 115323-07-4 | Fatty acids, tall-oil, polymers with benzoic acid, Me methacrylate, pentaerythritol, phthalic anhydride, styrene and trimethylolethane | Active | PMN XU UVCB |
| 115487-49-5 | Siloxanes and Silicones, Me hydrogen, Me Ph, (dimethylsilyl)oxy-terminated | Active | PMN XU UVCB |
| 115487-50-8 | Cashew, nutshell liq., polymer with epichlorohydrin and formaldehyde | Active | PMN XU UVCB |
| 115606-51-4 | Siloxanes and Silicones, 3-aminopropyl Me, di-Me, Me 3-[(1-oxooctadecyl)amino]propyl | Active | PMN XU UVCB |
| 115606-52-5 | Siloxanes and Silicones, di-Me, lauryl Me, Me 3-mercaptopropyl, Me 2-phenylpropyl | Active | PMN XU UVCB |
| 116597-52-5 | Fatty acids, tall-oil, polymers with Me methacrylate, pentaerythritol, phthalic anhydride, soybean oil, styrene and trimethylolpropane | Active | XU Y1 UVCB |
| 116597-55-8 | Fatty acids, dehydrated castor-oil, polymers with benzoic acid, pentaerythritol, phthalic anhydride and tall-oil fatty acids | Active | XU Y1 UVCB |
| 116810-47-0 | Siloxanes and Silicones, di-Me, 3-hydroxypropyl group-terminated, diesters with 2-oxepanone homopolymer acetate | Active | PMN XU UVCB |
| 117500-34-2 | 1,3-Benzenedicarboxylic acid, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,6-hexanediol, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane and 2,2,4(or 2,4,4)-trimethyl-1,6-hexanediol, acetone oxime-blocked | Active | PMN XU UVCB |
| 117584-36-8 | Poly(oxy-1,2-ethanediyl), .alpha.,.alpha.'-phosphinicobis[.omega.-hydroxy-, di-C12-15-alkyl ethers | Active | PMN XU UVCB |
| 117584-37-9 | Fatty acids, sunflower-oil, polymers with benzoic acid, pentaerythritol, phthalic anhydride and trimethylolpropane | Active | PMN XU UVCB |
| 118439-11-5 | 1,2-Propanediol, polymer with 2,4-diisocyanato-1-methylbenzene and 2-methyloxirane, Me Et ketone oxime-blocked | Active | PMN XU UVCB |
| 119040-02-7 | Siloxanes and Silicones, di-Me, Me vinyl, [(triethenylsilyl)oxy]-terminated | Active | PMN XU UVCB |
| 119185-04-5 | Fatty acids, C18-unsatd., dimers, polymers with dicyclopentadiene, fumaric acid, maleic anhydride, rosin and soybean oil | Active | PMN XU UVCB |
| 119185-05-6 | 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with 1,3-diisocyanatomethylbenzene and .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl), caprolactam-blocked | Active | PMN XU UVCB |
| 119185-06-7 | Poly[oxy(methyl-1,2-ethanediyl)], .alpha.,.alpha.',.alpha.''-1,2,3-propanetriyltris[.omega.-hydroxy-, polymer with .alpha.-hydro-.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)] and 1,1'-methylenebis[4-isocyanatobenzene], Me Et ketone oxime-blocked | Active | PMN XU UVCB |
| 119275-52-4 | Siloxanes and Silicones, di-Me, Me trifluoropropyl, hydroxy-terminated | Active | PMN XU UVCB |
| 119275-53-5 | 1-Butene, polymer with 2-butene and 2-methyl-1-propene, epoxidized | Active | PMN XU UVCB |
| 119345-05-0 | Phenol, polymer with 3a,4,7,7a-tetrahydro-4,7-methano-1H-indene, glycidyl ether | Active | PMN XU UVCB |
| 119345-06-1 | Phenol, polymer with 1,3-cyclopentadiene, 2-methyl-1,3-butadiene and 3a,4,7,7a-tetrahydro-4,7-methano-1H-indene, glycidyl ether | Active | PMN XU UVCB |
| 122335-03-9 | Soybean oil, polymer with diethylene glycol and phthalic anhydride | Active | PMN XU UVCB |
| 124578-11-6 | 2,5-Furandione, polymers with hydrogenated butadiene-styrene polymer | Active | PMN XU UVCB |
| 152143-20-9 | 2-Propenamide, reaction products with formaldehyde-melamine polymer Bu 2-ethylhexyl Me ethers | Active | PMN XU UVCB |
| 2416467-25-7 | Isocyanic acid, polymethylenepolyphenylene ester, 2-butoxyethanol- and caprolactam-blocked | Active | PMN XU UVCB |
| 2728655-38-5 | Amides, from hydrogenated tallow and tetraethylenepentamine, polymers with polyethylene glycol bis(3-chloro-2-hydroxypropyl) ether | Active | PMN XU UVCB |
| 2768948-43-0 | Amines, polyethylenepoly-, reaction products with 1,3-dioxolan-2-one and succinic anhydride polybutenyl derivs. | Active | PMN XU UVCB |
| 29497-14-1 | 2-Propenoic acid, 2-methyl-, butyl ester, polymer with butyl 2-propenoate and ethenylbenzene | Active | PMN XU Y1 |
| 2999740-08-6 | 3-Octanone, reaction products with N1-(3-aminopropyl)-1,3-propanediamine-5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane-propylene glycol polymer | Active | PMN XU UVCB |
| 2999740-09-7 | Benzene, diethenyl-, polymer with ethenylbenzene, chlorosulfonated | Active | PMN XU UVCB |
| 3001208-44-9 | Tall oil, polymer with fumaric acid, glycerol, phthalic anhydride and sorbitol | Active | PMN XU UVCB |
| 3001208-45-0 | Rosin, polymer with p-tert-butylphenol, formaldehyde, fumaric acid, glycerol, phthalic anhydride, sorbitol and tall oil | Active | PMN XU UVCB |
| 3001208-46-1 | Linseed oil, polymer with fumaric acid, glycerol, phthalic anhydride, sorbitol and tall oil | Active | PMN XU UVCB |
| 3001208-48-3 | 2-Propenoic acid, 2-hydroxy-3-phenoxypropyl ester, reaction products with 1,6-diisocyanatohexane-TDI polymer and 3-(trimethoxysilyl)-1-propanethiol | Active | PMN XU UVCB |
| 3001208-50-7 | Neodecanoic acid, 2-oxiranylmethyl ester, reaction products with diethanolamine and N1,N1-diethyl-1,3-propanediamine-hexamethylenediamine-polypropylene glycol diglycidyl ether polymer | Active | PMN XU UVCB |
| 3001208-51-8 | Soybean oil, polymer with glycerol, pentaerythritol, TDI and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione | Active | PMN XU UVCB |
| 3001208-52-9 | Silsesquioxanes, Me Pr, hydrolyzed, potassium salts | Active | PMN XU UVCB |
| 3001208-53-0 | Rosin, polymer with fumaric acid, pentaerythritol, phthalic anhydride, soybean oil and tung oil | Active | PMN XU UVCB |
| 3001208-92-7 | Rosin, polymer with p-tert-butylphenol, formaldehyde, fumaric acid, glycerol, phthalic anhydride, sorbitol and sunflower oil | Active | PMN XU UVCB |
| 3001210-02-9 | Tall oil, polymer with glycerol, maleic anhydride and pentaerythritol | Active | PMN XU UVCB |
| 3001210-58-5 | Fatty acids, tall-oil, polymers with acrylic acid, allyl alc., bisphenol A, epichlorohydrin and styrene | Active | PMN XU UVCB |
| 3001210-59-6 | Linseed oil, polymer with p-tert-butylphenol, formaldehyde, glycerol, phenol, phthalic anhydride and tall oil | Active | PMN XU UVCB |
| 3001210-60-9 | Propane, 1,2,3-trichloro-, polymer with 1,1'-[methylenebis(oxy)]bis[2-chloroethane] and sodium sulfide (Na2(Sx)), reduced, glycidyl thioethers | Active | PMN XU UVCB |
| 3011676-93-7 | 2-Propenoic acid, 2-methyl-, dodecyl ester, polymer with butyl 2-propenoate, ethenylbenzene, 2-oxiranylmethyl 2-methyl-2-propenoate and 2-propenoic acid, reaction products with 2-oxepanone and 1-piperazineethanamine | Active | PMN XU UVCB |
| 3011678-38-6 | Fatty acids, soya, polymers with isophthalic acid, pentaerythritol, trimellitic anhydride and trimethylolpropane | Active | XU Y1 UVCB |
| 3011678-93-3 | Soybean oil, polymer with glycerol, Me .alpha.-D-glucopyranoside, TDI and trimethylolpropane | Active | PMN XU UVCB |
| 3011678-95-5 | Tall oil, polymer with p-tert-butylphenol, formaldehyde, fumaric acid, glycerol, phenol, phthalic anhydride and sorbitol | Active | PMN XU UVCB |
| 3011678-97-7 | 2-Propenoic acid, 2-methyl-, polymer with butyl 2-methyl-2-propenoate, butyl 2-propenoate, ethenylbenzene and 2-hydroxypropyl 2-methyl-2-propenoate, reaction products with 1,6-diisocyanatohexane homopolymer and 3-ethoxy-1-propanamine | Active | PMN XU UVCB |
| 3011678-98-8 | Fatty acids, tall-oil, polymers with bisphenol A, bisphenol A diglycidyl ether, Ph Pr silsesquioxanes and rosin | Active | PMN XU UVCB |
| 3011678-99-9 | Fatty acids, tall-oil, polymers with glycidyl neodecanoate, hexahydro-1,3-isobenzofurandione and trimethylolpropane | Active | PMN XU UVCB |
| 3011679-00-5 | 2-Pentanone, 4-methyl-, reaction products with N1-(3-aminopropyl)-1,3-propanediamine and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane-propylene glycol polymer | Active | PMN XU UVCB |
| 3011679-01-6 | 2-Propenoic acid, 2-methyl-, polymer with 2-ethylhexyl 2-propenoate, 2-hydroxyethyl 2-methyl-2-propenoate and methyl 2-methyl-2-propenoate, reaction products with 1,6-diisocyanatohexane homopolymer and 3-ethoxy-1-propanamine | Active | PMN XU UVCB |
| 3011679-02-7 | 2-Propenoic acid, 2-methyl-, telomer with butyl 2-propenoate, ethenylbenzene, 2-hydroxyethyl 2-methyl-2-propenoate and 1-octanethiol, reaction products with 1,6-diisocyanatohexane homopolymer and 3-ethoxy-1-propanamine | Active | PMN XU UVCB |
| 3011679-04-9 | 2-Propenoic acid, 2-methyl-, butyl ester, polymer with butyl 2-propenoate, ethenylbenzene, 2-hydroxypropyl 2-propenoate and 2-propenoic acid, reaction products with 1,6-diisocyanatohexane homopolymer and 3-ethoxy-1-propanamine | Active | PMN XU UVCB |
| 3022878-98-1 | Linseed oil, polymer with p-tert-butylphenol, formaldehyde, fumaric acid, glycerol, phenol, phthalic anhydride, sorbitol and tall oil | Active | PMN XU UVCB |
| 3022879-99-5 | 2-Propenoic acid, polymer with butyl 2-propenoate, ethenylbenzene and 2-hydroxyethyl 2-propenoate, reaction products with 1,6-diisocyanatohexane homopolymer and 3-ethoxy-1-propanamine | Active | PMN XU UVCB |
| 3022880-36-7 | 2-Propenoic acid, 2-methyl-, polymer with butyl 2-methyl-2-propenoate, butyl 2-propenoate, ethenylbenzene and 2-hydroxyethyl 2-methyl-2-propenoate, reaction products with 1,6-diisocyanatohexane homopolymer and 3-ethoxy-1-propanamine | Active | PMN XU UVCB |
| 3022880-67-4 | Fatty acids, C18-unsatd., dimers, polymers with azelaic acid, ethylenediamine, fumaric acid, pentaerythritol, phthalic anhydride and tall-oil fatty acids | Active | PMN XU UVCB |
| 3022881-22-4 | 2-Propenoic acid, 2-methyl-, polymer with butyl 2-propenoate, ethenylbenzene, 2-hydroxypropyl 2-propenoate and methyl 2-methyl-2-propenoate, reaction products with 1,6-diisocyanatohexane homopolymer and 3-ethoxy-1-propanamine | Active | PMN XU UVCB |
From the EPA non-confidential TSCA Inventory, July 2026 release. EPA also maintains a confidential portion it does not publish, so a substance absent from this data is not thereby unflagged.