Dielectric Constants for Common Materials

Material Temp.
°F/°C
Dielectric
Constant
Material Temp.
°F/°C
Dielectric
Constant
Material Temp.
°F/°C
Dielectric
Constant
Acetal 3.6 Ethanol 77/25 24.3 Paraffin 1.9 to 2.5
Acetoaldehyde 22.2 Ethyl acetate 6.4 Pentane 1.8
Acetoanilide, granules 2.8 Ethyl alcohol 23 Phenol 118/47 9.9
Acetone 21.4 Ethyl benzene 2.5 Phenolic resin 4 to 12
Acetyl methyl hexyl ketone 28 Ethyl ether 4.3 Phosgene 32/0 4.7
Acrylic resin 2.7 to 6 Ethyl toluene 2.2 Polyacetal resin 2.6 to 3.7
Alcohol 16 to 31 Ethylene chloride 10.5 Polyamide resin 2.5 to 2.6
Aluminum carbonate 5.6 Ethylene glycol 37 Polycarbonate resin 2.9 to 3
Aluminum chlorate 5.1 Ferric oxide 1.4 to 1.8 Polyester resin 2.8 to 4.5
Aluminum ether 3.1 Fluorine resin 2 to 8 Polyethylene resin 2.2 to 2.6
Aluminum powder 1.6 to 1.8 Formic acid 60/16 58.5 Polystrene resin 2.2 to 2.6
Ammonia -27/-33 2.4 Freon 2.2 Propane 32/0 1.6
Ash (flyash) 1.9 to 2.6 Freon 12 70/21 2.4 Pyridine 12.5
Bakelite 4.5 to 5.5 Glass raw material 2.0 to 2.5 Rubber, raw 2.1 to 2.7
Barley, powder 3.4 to 4.0 Glass-silicone plate 3.5 to 4.2 Rubber, vulcanized 2.0 to 3.5
Benzene 2.3 Glycerine 47 Sand 3 to 5
Benzil 202/94 13 Glycol 36 Sesame, powder 1.8 to 2.0
Bleaching powder 1.8 to 2.0 Heptane 1.9 Silica sand 2.5 to 3.5
Bromine 3.1 Hexane 1.9 Silicon 2.4
Butane 30/-1 1.4 Hydrogen chloride 82/28 4.6 Silicon resin 3.5 to 5
Calcium carbonate 1.8 to 2.0 Iodine 224/107 118 Silicon tetrachloride 2.4
Carbon dioxide 1.6 Kerosene 70/21 1.8 Soap, powder 1.2 to 1.5
Carbon tetrachloride 2.2 Manganese dioxide 5.0 to 5.2 Sodium carbonate 5.3 to 8.4
Castor oil 60/16 4.7 Margarine, liquid 2.8 to 3.2 Sodium nitrate 5.2
Cellophane 7 to 7.7 Melamine resin 4.7 to 10.2 Soybean 1.8 to 2.0
Celluloid 4.1 Methanol 77/25 33.6 Steatite 5.3 to 6.8
Cellulose 6.7 Methyl acetate 7.3 Styrene (styrol resin) 77/25 2.4
Chlorine 32/0 2 Methyl alcohol 33.1 Sugar 3
Chlorine 2.1 Methyl ether 78/26 5 Sulfur monoxide 4.8
Chloroform 32/0 5.5 Methyl salycilate 9 Sulfur, powder 1.5 to 1.8
Coal 1.2 to 1.8 Mica 4.5 to 7.5 Teflon 2
Coke, powder 1.1 to 2.2 Napthalene 2.5 Toluene 2.4
Colophonium 2.5 to 2.6 Nylon 4 to 5 Trichloethylene 3.4
Corn 2.3 to 2.6 Octane 2 Urea 3.5
Cyclohexane 2 Oil, mineral 2.2 to 2.4 Urethane 6.5 to 7.1
Dimethylheptane 1.9 Oils, petroleum 1.8 to 2.2 Vinyl ether 3.9
Dimethylpentane 1 Oils, vegetable 2.5 to 3.5 Water 80
Dolomite 8.8 Olefin 3.2 Wheat, powder 2.5 to 3
Dowtherm 70/21 3.3 Oleic acid 2.5 Xylene 2.4