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Industrial Products and their Dialectric Constants
Material
Dialectric Constant
Material
Dialectric Constant
ABS Resin, pellet
1.5 - 2.5
Coke
1.1 - 2.2
Acetone
19.5
Corn
5 - 10
Acetyl bromide
16.5
Ebonite
2.7 - 2.9
Acrylin resin
2.7 - 4.5
Epoxy resin
2.5 - 6
Air
1.0
Ethanol
24
Alcohol, industrial
16 - 31
Ethyl bromide
4.9
Alcohol, isopropyl
18.3
Ethylene glycol
38.7
Ammonia
15 - 25
Flour
2.5 - 3.0
Aniline
5.5 - 7.8
Freon® R22 & 502, liquid
6.1
Aqueous solutions
50 - 80
Gasoline
2.2
Ash (fly)
1.7
Glass
3.1 - 10
Bakelite
3.6
Glass, raw material
2.0 - 2.5
Barley powder
3.0 - 4.0
Glycerine
47
Benzene
2.3
Hexane
1.9
Benzyl acetate
5
Hydogen cyanide
95.4
Butane
1.4
Hydrogen peroxide
84.2
Cable sealing compound
2.5
Isobutylamine
4.5
Calcium carbonate
9.1
Lime, shell
1.2
Carbon tetrachloride
2.2
Marble
8.0 - 8.5
Celluloid
3.0
Melamine resin
4.7 - 10.2
Cellulose
3.2 - 7.5
Methane, liquid
1.7
Cement
1.5 - 2.1
Methanol
33.6
Cement powder
5 - 10
Mica, white
4.5 - 9.6
Cereal
3 - 5
Milk, powdered
3.5 - 4
Charcoal
1.2 - 1.8
Nitrobenzene
36
Chlorine, liquid
2.0
Neoprene
6 - 9

Chart 2, Dialectic Constants Cont.
Nylon
4 - 5
Quartz glass
3.7
Oil, for transformer
2.2 - 2.4
Rubber
2.5 - 35
Oil, paraffin
2.2 - 4.8
Salt
6.0
Oil, peanut
3.0
Sand
3 - 5
Oil, petroleum
2.1
Shellac
2.0 - 3.8
Oil, soybean
2.9 - 3.5
Silicon dioxide
4.5
Oil, turpentine
2.2
Silicone rubber
3.2 - 9.8
Paint
5 - 8
Silicone varnish
2.8 - 3.3
Paraffin
1.9 - 2.5
Styrene resin
2.3 - 3.4
Paper
1.6 - 2.6
Sugar
3.0
Paper, hard
4.5
Sugar, granulated
1.5 - 2.2
Paper, oil saturated
4.0
Sulfur
3.4
Perspex
3.2 - 3.5
Sulfuric acid
84
Petroleum
2.0 - 2.2
Teflon®, PCTFE
2.3 - 2.8
Phenol
9.9 - 15
Teflon®, PTFE
2.0
Phenol resin
4.9
Toluene
2.3
Polyacetal (Delrin®)
3.6
Trichloroethylene
3.4
Polyamide (nylon)
2.5
Urea resin
6.2 - 9.5
Polycarbonate
2.9
Urethane
3.2
Polyester resin
2.8 - 8.1
Vaseline
2.2 - 2.9
Polyethylene
2.3
Water
48 - 88
Polypropylene
2.0 - 2.3
Wax
2.4 - 6.5
Polystyrene
3.0
Wood, dry
2 - 7
Polyvinyl chloride resin
2.8 - 3.1
Wood, pressed board
2.0 - 2.6
Porcelain
4.4 - 7
Wood, wet
10 - 30
Press board
2 - 5
Xylene
2.4