Refractive Indices of Known Materials

When light passes through a medium, it bends, and normally at a predictable angle. Refractive index is the measurement of that angle: the ratio of the velocity of light in the air to the velocity of light in a medium through which it passes. Knowing a refractive index can help you (a) identify the medium in a liquid or (b) measure the purity and concentration of a medium in that liquid.

Brix Scale (% Sugar Content)

0% Brix1.333 15% Brix1.3557  30% Brix1.3811 45% Brix1.4096  60% Brix1.4418 75% Brix1.4774
5% Brix1.340320% Brix1.363935% Brix1.390250% Brix1.4265% Brix1.453280% Brix1.4901
10% Brix1.347925% Brix1.372340% Brix1.399755% Brix1.430770% Brix1.465185% Brix1.5003

Refractive Indices of Common Liquids

MaterialRefractive Index  MaterialRefractive Index  MaterialRefractive Index
Acetaldehyde1.3316 Dodecane1.41 Nickel1.08
Acetic Acid1.3717Ethanol1.36Nitric Acid1.397
Acetic Anhydride1.3904Ethyl Acetate1.3722Nitrobenzene1.5529
Acetone1.3588Ethyl Alcohol1.3624Nitromethane1.3818
Acetonitrile1.3441Ethyl Benzene1.4952Nitrotoluene(o)1.5474
Acrylic Acid1.4224Ethyl Bromide1.4239N-Methylpyrolidone1.47
Aluminum1.39Ethyl Ether1.3524Nonane1.4055
Amyl Acetate1.4012Ethylene Dichloride1.4448Octane1.3975
Aniline1.5863Ethylene Glycol1.4627Oil, vegetable (50° C)1.47
Beer1.345Formamide1.4453Pentane1.3575
Benzaldehyde1.5463Formic Acid1.3714Perchloroethylene1.5053
Benzene1.5011Freon R-111.37Petroleum Ether1.365
Benzyl Alcohol1.5396Freon R-121.29Phenol1.5425
Benzylamine1.5401Freon R-221.26Platinum2.33
Bromoaniline (m)1.626Furan1.47Pronanol(iso)1.3776
Butyl Acetate1.3951Glycerol (Glycerin)1.4729Propane1.34
Butyl Alcohol1.3993Glycol1.4318Propyl Alcohol (n)1.3856
Butyl Chloride (n)1.4021Gold0.47Propyl Bromide1.4341
Butylene1.3962Heptane1.3876Propylene1.36
Carbon Disulfide1.6295Hexane1.3749Propylene Carbonate1.421
Carbon Tetrachloride1.4631Hexanol1.4135Propylene Glycol (100%)1.433
Carbonated Beverages1.34 - 1.356Hydrazine1.47Pyridine1.5102
Chlorine, Liquid1.385Hydrogen Chloride1.256Silver1.35
Chlorobenzene1.5248Ice1.309Styrene1.5434
Chloroform1.4464Isobutyl Alcohol1.3959Sulfuric Acid1.834
Copper2.43Iso-Octane1.3914Tetrahydrofuran1.4072
Cranberry Juice (25%)1.351Isopentane1.355Titanium2.16
Cycloheptane1.444Isopropyl Acetate1.377Toluene1.4969
Cyclohexane1.4262Isopropyl Alcohol1.3772Toluidine(o)1.5728
Cyclohexanone1.4503Isopropyl Myristate1.4332Trichlorofluoroethane1.36
Cyclopentane1.4065Lead Tetraethyl1.5198(Freon 113) 
Decane1.41203Menthol1.458Tricholoroethane1.4377
Decane1.41Methyl Alcohol1.3288Triethylamine1.401
Dichlorobenzene (o)1.5514Methyl Ethyl Ketone1.3788Trifluoroacetic Acid1.285
Dichloromethane1.4241Methyl Iodide1.5293Turpentine1.472
Di-Ethyl Benzene1.4955Methyl Isoamyl Ketone1.407Turpentine (wood)1.47
Di-Ethyl Ether1.3497Methyl Isobutyl Ketone1.3957Water1.333
Dimethyl Acetamide1.4384Methyl n-Propyl Ketone1.3901Water (0° C)1.33346
Dimethyl Benzene1.4972Methyl t-Butyl Ether1.3689Water (100° C)1.31766
Dimethyl Sulfoxide1.4793Methylacetate1.3594Xylene(o)1.5055
Dimethylaniline1.5582   
Copyright 1995-2020 © Lesman Instrument Company