http://www.texloc.com/closet/cl_refractiveindex.html PHFPO Poly(hexafluoropropylene oxide) 1.3010 Alginic acid, sodium salt 1.3343 Hydroxypropyl cellulose 1.3370 Poly(tetrafluoroethylene-co-hexafluoropropylene) 1.3380 FEP Fluorinated Ethylene Propylene 1.3380 Poly(pentadecafluorooctyl acrylate) 1.3390 Poly(tetrafluoro-3-(heptafluoropropoxy)propyl acrylate) 1.3460 Poly(tetrafluoro-3-(pentafluoroethoxy)propyl acrylate) 1.3480 PTFE Poly(tetrafluoroethylene) 1.3500 THV Tetrafluoroethylene hexafluoropropylene vinylidene fluoride 1.3500 Poly(undecafluorohexyl acrylate) 1.3560 PFA Perfluoroalkoxy 1.3400 ETFE Ethylene Tetrafluoroethylene 1.4000 Poly(nonafluoropentyl acrylate) 1.3600 Poly(tetrafluoro-3-(trifluoromethoxy)propyl acrylate) 1.3600 Poly(pentafluorovinyl propionate) 1.3640 Poly(heptafluorobutyl acrylate) 1.3670 Poly(trifluorovinyl acetate) 1.3750 Poly(octafluoropentyl acrylate) 1.3800 Poly(methyl 3,3,3-trifluoropropyl siloxane) 1.3830 Poly(pentafluoropropyl acrylate) 1.3850 Poly(2-heptafluorobutoxy)ethyl acrylate) 1.3900 PCTFE Poly(chlorotrifluoroethylene) 1.3900 Poly(2,2,3,4,4-hexafluorobutyl acrylate) 1.3920 Poly(methyl hydro siloxane) 1.3970 Poly(methacrylic acid), sodium salt 1.4010 Poly(dimethyl siloxane) 1.4035 Poly(trifluoroethyl acrylate) 1.4070 Poly (2-(1,1,2,2-tetrafluoroethoxy)ethyl acrylate) 1.4120 Poly(trifluoroisopropyl methacrylate) 1.4177 Poly(2,2,2-trifluoro-1-methylethyl methacrylate) 1.4185 Poly(2-trifluoroethoxyethyl acrylate) 1.4190 PVDF Poly(vinylidene fluoride) 1.4200 ECTFE Ethylene Chlorotrifluorotheylene 1.4470 Poly(trifluoroethyl methacrylate) 1.4370 Poly(methyl octadecyl siloxane) 1.4430 Poly(methyl hexyl siloxane) 1.4430 Poly(methyl octyl siloxane) 1.4450 Poly(isobutyl methacrylate) 1.4470 Poly(vinyl isobutyl ether) 1.4507 Poly(methyl hexadecyl siloxane) 1.4510 PEO Poly(ethylene oxide) 1.4539 Poly(vinyl ethyl ether) 1.4540 Poly(methyl tetradecyl siloxane 1.4550 Poly(ethylene glycol mono-methyl ether) 1.4555 Poly(vinyl n-butyl ether) 1.4563 PPOX Poly(propylene oxide) 1.4570 Poly(3-butoxypropylene oxide) 1.4580 Poly(3-hexoxypropylene oxide) 1.4590 Poly(ethylene glycol) 1.4590 Poly(vinyl n-pentyl ether) 1.4590 Poly(vinyl n-hexyl ether) 1.4591 Poly(4-fluoro-2-trifluoromethylstyrene) 1.4600 Poly(vinyl octyl ether) 1.4613 Poly(vinyl n-octyl acrylate) 1.4613 Poly(vinyl 2-ethylhexyl ether) 1.4626 Poly(vinyl n-decyl ether) 1.4628 Poly(2-methoxyethyl acrylate) 1.4630 Poly(acryloxypropyl methyl siloxane) 1.4630 PMP Poly(4-methyl-1-pentene) 1.4630 Poly(3-methoxypropylene oxide 1.4630 PtBuMA Poly(t-butyl methacrylate) 1.4638 Poly(vinyl n-dodecyl ether) 1.4640 Poly(3-ethoxypropyl acrylate) 1.4650 Poly(vinyl propionate) 1.4664 PVAC Poly(vinyl acetate) 1.4665 Poly(vinyl propionate) 1.4665 Poly(vinyl methyl ether) 1.4670 Poly(ethyl acrylate) 1.4685 Poly(vinyl methyl ether)(isotactic) 1.4700 Poly(3-methoxypropyl acrylate) 1.4710 Poly(1-octadecene) 1.4710 Poly(2-ethoxyethyl acrylate) 1.4710 PIPA Poly (isopropyl acrylate) 1.4728 Poly(1-decene) 1.4730 Poly(propylene)(atactic) 1.4735 Poly(lauryl methacrylate) 1.4740 Poly(vinyl sec-butyl ether)(isotactic) 1.4740 P-nBuA Poly(n-butyl acrylate) 1.4740 Poly(dodecyl methacrylate) 1.4740 Poly(ethylene succinate) 1.4744 Poly(tetradecyl methacrylate) 1.4746 Poly(hexadecyl methacrylate) 1.4750 CAB Cellulose acetate butyrate 1.4750 CA Cellulose acetate 1.4750 Poly(vinyl formate) 1.4757 EVA-40% vinyl acetate Ethylene/vinyl acetate copolymer-40% vinyl acetate 1.4760 Poly(2-fluoroethyl methacrylate) 1.4768 Poly(octyl methyl silane) 1.4780 EC Ethyl cellulose 1.4790 PMA Poly(methyl acrylate) 1.4793 Poly(dicyanopropyl siloxane) 1.4800 POM Poly(oxymethylene) or Polyformaidehyde 1.4800 Poly(sec-butyl methacrylate) 1.4800 Poly(dimethylsiloxane-co-alpha-methylstyrene) 1.4800 Poly(n-hexyl methacrylate) 1.4813 EVA-33% vinyl acetate Ethylene/vinyl acetate copolymer-33% vinyl acetate 1.4820 PnBuMA Poly(n-butyl methacrylate) 1.4830 Poly(ethylidene dimethacrylate) 1.4831 Poly(2-ethoxyethyl methacrylate) 1.4833 Poly(n-propyl methacrylate) 1.4840 Poly(ethylene maleate) 1.4840 EVA-28% vinyl acetate Ethylene/vinyl acetate copolymer-28% vinylacetate 1.4845 Poly(ethyl methacrylate) 1.4850 PVB Poly(vinyl butyral) 1.4850 PVB-11% hydroxl Poly(vinyl butyral)-11% hydroxl 1.4850 Poly(3,3,5-trimethylcyclohexyl methacrylate) 1.4850 Poly(2-nitro-2-methylpropyl methacrylate) 1.4868 Poly(dimethylsiloxane-co-diphenylsiloxane) 1.4880 Poly(1,1-diethylpropyl methacrylate) 1.4889 Poly(triethylcarbinyl methacrylate) 1.4889 PMMA Poly(methyl methacrylate) 1.4893 Poly(2-decyl-1,4-butadiene) 1.4899 PP-isotactic Poly(propylene), isotactic 1.4900 PVB-19% hydroxyl Poly(vinyl butyral)-19% hydroxyl 1.4900 Poly(mercaptopropyl methyl siloxane) 1.4900 Poly(ethyl glycolate methacrylate) 1.4903 Poly(3-methylcyclohexyl methacrylate) 1.4947 Poly(cyclohexyl alpha-ethoxyacrylate) 1.4969 MC Methyl cellulose 1.4970 Poly(4-methylcyclohexyl methacrylate) 1.4975 Poly(decamethylene glycol dimethacrylate) 1.4990 PVAL Poly(vinyl alcohol) 1.5000 PVFM Poly(vinyl formal) 1.5000 Poly(2-bromo-4-trifluoromethyl styrene) 1.5000 Poly(1,2-butadiene) 1.5000 Poly(sec-butyl alpha-chloroacrylate) 1.5000 Poly(2-heptyl-1,4-butadiene) 1.5000 Poly(vinyl methyl ketone) 1.5000 Poly(ethyl alpha-chloroacrylate) 1.5020 PVFM Poly(vinyl formal) 1.5020 Poly(2-isopropyl-1,4-butadiene 1.5020 Poly(2-methylcyclohexyl methacrylate) 1.5028 Poly(bornyl methacrylate) 1.5059 Poly(2-t-butyl-1,4-butadiene) 1.5060 Poly(ethylene glycol dimethacrylate) 1.5063 PCHMA Poly(cyclohexyl methacrylate) 1.5065 Poly(cyclohexanediol-1,4-dimethacrylate) 1.5067 IIR or PIBI Butyl rubber(unvulcanized) 1.5080 Gutta percha b 1.5090 Poly(tetrahydrofurfuryl methacrylate) 1.5096 PIB Poly(isobutylene) 1.5100 LDPE Polyethylene, low density 1.5100 EMA Ethylene/methacrylic acid ionomer, sodium ion 1.5100 PE Polyethylene 1.5100 CN Cellulose nitrate 1.5100 Polyethylene lonomer 1.5100 Polyacetal 1.5100 Poly(1-methylcyclohexyl methacrylate) 1.5111 Poly(2-hydroxyethyl methacrylate) 1.5119 Poly(1-butene)(isotactic) 1.5125 Poly(vinyl methacrylate) 1.5129 Poly(vinyl chloroacetate) 1.5130 Poly(N-butyl methacrylamide) 1.5135 Gutta percha a 1.5140 Poly(2-chloroethyl methacrylate) 1.5170 PMCA Poly(methyl alpha-chloroacrylate) 1.5170 Poly(2-diethylaminoethyl methacrylate) 1.5174 Poly(2-chlorocyclohexyl methacrylate) 1.5179 Poly(1,4-butadiene)(35% cis; 56% trans; 7% 1,2-content) 1.5180 PAN Poly(acrylonitrile) 1.5187 Poly(isoprene),cis 1.5191 Poly(allyl methacrylate) 1.5196 Poly(methacrylonitrile) 1.5200 Poly(methyl isopropenyl ketone) 1.5200 Poly(butadiene-co-acrylonitrile) 1.5200 Poly(2-ethyl-2-oxazoline) 1.5200 Poly(1,4-butadiene)(high cis-type) 1.5200 Poly(N-2-methoxyethyl)methacrylamide 1.5246 Poly(2,3-dimethylbutadiene){methyl rubber} 1.5250 Poly(2-chloro-1-(chloromethyl)ethyl methacrylate) 1.5270 Poly(1,3-dichloropropyl methacrylate) 1.5270 PAA Poly(acrylic acid) 1.5270 Poly(N-vinyl pyrrolidone) 1.5300 NYLON-6 Nylon 6{Poly(caprolactam)} 1.5300 Poly(butadiene-co-styrene)(30%) styrene)block copolymer 1.5300 Poly(cyclohexyl alpha-chloroacrylate) 1.5320 Poly(methyl phenyl siloxane) 1.5330 Poly(2-chloroethyl alpha-chloroacrylate) 1.5330 Poly(butadiene-co-styrene)(75/25) 1.5350 Poly(2-aminoethyl methacrylate) 1.5370 Poly(furfuryl metacrylate) 1.5381 PVC Poly(vinyl chloride) 1.5390 Poly(butylmercaptyl methacrylate) 1.5390 Poly(1-phenyl-n-amyl methacrylate) 1.5396 Poly(N-methyl methacrylamide) 1.5398 HDPE Polyethylene, high density 1.5400 Cellulose 1.5400 Poly(cyclohexyl alpha-bromoacrylate) 1.5420 Poly(sec-butyl alpha-bromoacrylate) 1.5420 Poly(2-bromoethyl methacrylate) 1.5426 Poly(dihydroabietic acid) 1.5440 Poly(abietic acid) 1.5460 Poly(ethylmercaptyl methacrylate) 1.5470 Poly(N-allyl methacrylamide) 1.5476 Poly(1-phenylethyl methacrylate) 1.5487 Poly(2-vinyltetrahydrofuran) 1.5500 Poly(vinylfuran) 1.5500 Poly(methyl m-chlorophenylethyl siloxane) 1.5500 Poly(p-methoxybenzyl methacrylate) 1.5520 Poly(isopropyl methacrylate) 1.5520 Poly(p-isopropyl styrene) 1.5540 Poly(isoprene), chlorinated 1.5540 Poly(p,p'-xylylenyl dimethacrylate) 1.5559 Poly(cyclohexyl methyl silane) 1.5570 Poly(1-phenylallyl methacrylate) 1.5573 Poly(p-cyclohexylphenyl methacrylate) 1.5575 CR Poly(chloroprene) 1.5580 Poly(2-phenylethyl methacrylate) 1.5592 Poly(methyl m-chlorophenyl siloxane) 1.5600 Poly{4,4-heptane bis(4-phenyl)carbonate} 1.5602 Poly{1-(o-chlorophenyl)ethyl methacrylate)} 1.5624 S/MA Styrene/maleic anhydride copolymer 1.5640 Poly(1-phenylcyclohexyl methacrylate) 1.5645 NYLON 6,10 Nylon 6,10{Poly(hexamethylene sebacamide)} 1.5650 NYLON 6,6 Nylon 6,6{Poly(hexamethylene adipamide)} 1.5650 NYLON 6(3) Nylon 6(3)T {Poly(trimethyl hexamethylene terephthalamide)} 1.5660 Poly(2,2,2'-trimethylhexamethylene terephthalamide) 1.5660 Poly(methyl alpha-bromoacrylate) 1.5672 Poly(benzyl methacrylate) 1.5680 Poly{2-(phenylsulfonyl)ethyl methacrylate} 1.5682 Poly(m-cresyl methacrylate) 1.5683 SAN Styrene/acrylonitrile copolymer 1.5700 Poly(o-methoxyphenol methacrylate) 1.5705 PPhMA Poly(phenyl methacrylate) 1.5706 Poly(o-cresyl methacrylate) 1.5707 PDAP Poly(diallyl phthalate) 1.5720 Poly(2,3-dibromopropyl methacrylate) 1.5739 Poly(2,6-dimethyl-p-phenylene oxide) 1.5750 PET Poly(ethylene terephthalate) 1.5750 PVB Poly(vinyl benozoate) 1.5775 Poly{2,2-propane bis[4-(2-methylphenyl)]carbonate} 1.5783 Poly{1,1-butane bis(4-phenyl)carbonate} 1.5792 Poly(1,2-diphenylethyl methacrylate) 1.5816 Poly(o-chlorobenzyl methacrylate) 1.5823 Poly(m-nitrobenzyl methacrylate) 1.5845 Poly(oxycarbonyloxy-1,4-phenyleneisopropylidene-1,4- phenylene) 1.5850 Poly{N-(2-phenylethyl)methacrylamide} 1.5857 Poly{1,1-cyclohexane bis[4-(2,6-dichlorophenyl)]carbonate} 1.5858 PC Polycarbonate resin 1.5860 BPA Bisphenol-A polycarbonate 1.5860 Poly(4-methoxy-2-methylstyrene) 1.5868 Poly(o-methyl styrene) 1.5874 PS Polystyrene 1.5894 Poly{2,2-propane bis[4-(2-chlorophenyl)]carbonate} 1.5900 Poly{1,1-cyclohexane bis(4-phenyl)carbonate} 1.5900 Poly(o-methoxy styrene) 1.5932 Poly(diphenylmethyl methacrylate) 1.5933 Poly{1,1-ethane bis(4-phenyl)carbonate} 1.5937 Poly(propylene sulfide) 1.5960 Poly(p-bromophenyl methacrylate) 1.5964 Poly(N-benzyl methacrylamide) 1.5965 Poly(p-methoxy styrene) 1.5967 MeOS Poly(4-methoxystyrene) 1.5967 Poly{1,1-cyclopentane bis(4-phenyl)carbonate} 1.5993 PVDC Poly(vinylidene chloride) 1.6000 Poly(o-chlorodiphenylmethyl methacrylate) 1.6040 Poly{2,2-propane bis[4-(2,6-dichlorophenyl)]carbonate} 1.6056 Poly(pentachlorophenyl methacrylate) 1.6080 Poly(2-chlorostyrene) 1.6098 PaMes Poly(alpha-methylstyrene) 1.6100 Poly(phenyl alpha-bromoacrylate) 1.6120 Poly{2,2-propane bis[4-(2,6-dibromophenyl)cabonate]} 1.6147 Poly(p-divinylbenzene) 1.6150 Poly(N-vinyl phthalimide) 1.6200 Poly(2,6-dichlorostyrene) 1.6248 Poly(chloro-p-xylene) 1.6290 Poly(beta-naphthyl methacrylate) 1.6298 Poly(alpha-naphthyl carbinyl methacrylate) 1.6300 PEI-ULTEM Polyetherimide (880 nm wavelength) 1.630 PEI-ULTEM Polyetherimide (643.8 nm wavelength) 1.651 PEI-ULTEM Polyetherimide (587.6 nm wavelength) 1.660 PEI-ULTEM Polyetherimide (546.1 nm wavelength) 1.668 PEI-ULTEM Polyetherimide (480 nm wavelength) 1.687 Poly(phenyl methyl silane) 1.6300 Poly(sulfone) {Poly[4,4'-isopropylidene diphenoxy di(4- phenylene)sulfone]} 1.6330 PSU Polysulfone resin 1.6330 Poly(2-vinylthiophene) 1.6376 Mylar Film Polyethylene terephthalate (boPET) 1.64-1.67 Poly(2,6-diphenyl-1,4-phenylene oxide) 1.6400 Poly(alpha-naphthyl methacrylate) 1.6410 Poly(p-phenylene ether-sulphone) 1.6500 Poly{diphenylmethane bis(4-phenyl)carbonate} 1.6539 Poly(vinyl phenyl sulfide) 1.6568 Poly(styrene sulfide) 1.6568 Butylphenol formaldehyde resin 1.6600 Poly(p-xylylene) 1.6690 PVN Poly(2-vinylnapthalene) 1.6818 PVK Poly(N-vinyl carbazole) 1.6830 Naphthalene-formaldehyde rubber 1.6960 PF Phenol-formaldehyde resin 1.7000 Poly(pentabromophenyl methacrylate) 1.7100 MFA Polytetrafluoroethylene-Perfluoromethylvinylether unknown PEEK1 (amorphous) Polyetheretherketone 1.65-1.71 PEEK2 (crystalline) Polyetheretherketone 1.68-1.77 --

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