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Table of dielectric constants of substances

 

Table of dielectric constants of substances

This table lists dielectric constants (relative dielectric constants) of various substances in alphabetical order.
* The dielectric constant of a vacuum is considered to be 1.0. Conductive substances have higher dielectric constants. Insulating substances have lower dielectric constants.
The dielectric constant of some substances changes as their physical state changes. See below for precautions of dielectric constant of each substance of each material.

As is shown in the table below, each substance (that is, each material to be measured) has its own specific dielectric constant.

 

A

ABS resin 2.4~4.1 Aluminum powder 1.6~
Acetate 3.2~7.0 Alundum 3.2~3.4
Acetic acid 6.2 Aniline 6.9
Acetone 19.5 Aniline-formaldehyde resin 4
Acetyl cellulose 2.5~7.5 Aniline resin 3.4~3.8
Acryl nitrile resin 3.5~4.5 Animal feed 3.0~5.0
Acrylic resin 2.7~4.5 Amber 2.8~2.9
Air 1.000586 Aminoalkyl resin 3.9~4.2
Air (liquid) 1.5 Ammonia 15~25
Alcohol 16~31 Aqueous solution 50~80
Alkyd resin 5 Aqueous solution 50~80
Alumina film 6~10 Asbestos 1.4~1.5
Alumina porcelain 8.0~11 Asbestos 3~3.5
Alumino alkyd resin 3.9 Asbestos 3~3.6
Aluminum hydroxide 2.2 Asphalt 2.7
Aluminum oxide 2.14 AS resin 2.6~3.1
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B

Bakelite 4.5~5.5 Beverage in glass bottle 2.0~2.5
Bakelite vanish 3.5~4.5 Black lead 12.0~13.0
Barium nitrate 5.9 Bleaching powder 1.8~2.0
Barium titanate 1200 Bone black 5.0~6.0
Bengala 2.6 Borosilicate 4.0~5.0
Benzene 2.3 Butane 20
Benzene alcohol 13.1 Butyl rubber 2.5~3.5
Beryl (parallel to optical axis) 6.08 Butyrate 3.2~6.2
Beryl (perpendicular to optical axis) 7.02    
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C

Calcite 8.3 Cevine 1.6~2.0
Calcium 3 Chez beer benzene 2.3
Calcium hydroxide (powder) 1.8~3.0 Chloroform 4.8
Calcium phosphate 1.58 Chloronaphthalene 3.5~5.4
Calcium phosphate 1.9~3.2 Chloropyrene 6.0~9.0
Calcium silicate 2.4~5.4 Chromium ore 8.0~10.0
Carbide powder 5.8~7.0 Chromite 4.0~4.2
Carbolic acid 10 Clay (powder) 1.8~2.8
Carbon bisulfide (liquid) 2.6 Coal tar 2.0~3.0
Carbon dioxide 1.000985 Cocoa lees 2.5~3.5
Carbon dioxide (liquid) 1.6 Coffee lees 2.4~2.6
Carbon tetrachloride 2.2~2.6 Compound 3.6
Casein resin 6.1~6.8 Corn lees 2.3~2.6
Celluloid 4.1~4.3 Cotton 3~7.5
Cellulose 6.7~8.0 Cotton seed oil 3.1
Cellulose acetate 3.2~7 Cresol 11.8
Cellophane 6.1~7.7 Cross-linked polyethylene 2.3~2.4
Cereals 3.0~5.0 Crude oil (KW#9020.01%) 2.428 or more
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D

Darusamu 3.2 Diallele phthalate resin 3.3~6.0
Dextrin 2.2~2.4 Diamond 16.5
Diallele phthalate 3.8~4.2 Dolomite 3.1
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E

Ethyl acetate 6.4 Ethylene oxide 4.0~5.0
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F

Feldspathic porcelain 5~7 Fluorinated aluminum 2.2
Fellow chrome 1.5~1.8 Fluorite 6.8
Ferric oxide (powder) 1.4~1.8 Flux 3
Ferrite (powder) 1.4~ Flyash 1.5~1.7
Ferro-manganese 2.8~3.2 Formalin 23
Ferrule resin 3.0~12.0 Formic acid 58.5
Fiber 2.5~5 Forsterite porcelain 5.8~6.7
Filling compound 3.6 Foundry sand 3.384~3.467
Film flake (black) 1.17~1.19 Freon 2.2
Flexible glass 3.45 Freon 11 2.2
Flour 2.5~3.0 Furfural resin 4.0~8.0
Fluor resin 4.0~8.0 Furan resin 4.5~10.0
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G

Gasoline 2.0~2.2 Glycol 35.0~40.0
Glass 3.7~10.0 Glycerin 47
Glass bead 3.1 Granular glass (0010) 6.32
Glass, epoxy laminate plate 4.5~5.2 Granular glass (0080) 6.75
Glass, silicone laminate plate 3.5~4.5 Granulated sugar (powder) 1.5~2.2
Glass, polyester laminate plate 4.2~5 Granule gelatin 2.615~2.664
Glucose 3.0~4.0 Gypsum 5.3
Glue (powder) 1.7~1.8    
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H

Hard PVC resin 2.8~3.1 Honey wax 2.5~2.9
Hard vinyl butyral resin 3.33 Hydrogen 1.000264
Helium (liquid) 1.05 Hydrogen (liquid) 1.2
Honey 2.9    
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I

Ice 4.2 Ivory 1.9
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K

Kerosene 1.8    
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L

Lead nitrate 37.7 Light oil 1.8
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M

Magnesium sulfate (powder) 2.7 or more Methyl violet 4.6
Manganese dioxide 5.1 Mica 5.7~7.0
Marble 3.5~9.3 Micanite 3.4~8.0
Margarine liquid 2.8~3.2 Micarex 6.5~9.5
Melamine-formaldehyde resin 7.0~9.0 Micro hexane 2
Melamine resin 4.7~10.2 Mineral oil 2~2.5
Methacrylic resin 2.2~3.2 Mirror stone 4.5~7.5
Methanol 33    
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N

Naphtha 1.8 Nitrogen 1.000606
Naphthalene 2.5 Nitrogen (liquid) 1.4
Natural rubber 2.7~4.0 N-hexane 2
Neoprene 6~9 Normal heptane 1.92
Nescafe powder 0.55~0.7 vibration Nylon 3.5~5.0
Nitrobenzene 36 Nylon-6 3.5~4.0
Nitro cellulose lacquer 6.7~7.3 Nylon-6-6 3.4~3.5
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O

Oxygen 1.000547 Oxygen dioxide (liquid) 2.6
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P

Paint 7.5 Polyethylene (low pressure) 2.3
Palm lees 3.1 Polyethylene oxide 7.8
Paper 2.0~2.5 Polyethylene pellet 1.7
Paper, phenol laminate plate 5.0~7.0 Polyethylene-telephthalate 2.9~3
Paraffin 1.9~2.5 Poly methyl acrylate 4
Paraffin oil 4.6~4.8 Polypropylene 2.0~2.3
Paraffin wax 2.1~2.5 Polypropylene pellet 1.5~1.8
Pebble 5.4~6.6 Polypropylene resin 2.2~2.6
PE cube 1.55~1.57 Polystyrene 2.4~2.6
Petroleum 2.0~2.2 Polystyrene pellet 1.5
Phenole (lime acid) 9.78 Polystyrol 2.0~2.6
Phenol paper laminate sheet 4.6~5.5 Polysulfonate 2.8
Phenol pellet 2.0~2.6 Polytetrafluoroethylene 2
Phosphate rock 4 Poly urethane 5.0~5.3
Pine oil 2.5 Polyvinyl alcohol 2
Polyacetal resin 3.6~3.7 Porcelain 4.4~7.0
Polyamide 2.5~2.6 Pottery 5~7
Polybutylene 2.2~2.3 Press board 2.0~5.0
Polybutylene resin 2.25 Propane (liquid) 1.6~1.9
Polycarbonate 2.9~3 Propionate 3.3~3.8
Polycarbonate powder 1.58 Propylene glycol 32
Polycarbonate resin 2.9~3.0 PVA-E(sawdust) 2.23~2.30
Polyester pellet 3.2 P vinyl alcohol 1.8
Polyester resin 2.8~8.1 Pyranol 4.4
Polyethylene 2.3~2.4 Pyrex 4.8
Polyethylene (high pressure) 2.2    
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Q

Quartz 3.7~4.1 Quartz glass 3.5~4.0
Quartz crystal 4.6 Quartz (melted) 3.5~4.5
Quartz crystal (melted) 3.5~3.6    
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R

Rice powder 3.5~3.7 Rubber (raw) 2.1~2.7
Rochelle salt 100~2000 Rubber (vulcanized) 2.0~3.5
Rosin oil (powder) 1.65 Ruby (parallel to optical axis) 11.28
Rubber cement 2.7~2.9 Ruby (perpendicular to optical axis) 13.27
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S

Salt 3.0~15.0 Slate 6.6~7.4
Sand 3.0~5.0 Snow 3.3
Selenium 6.1~7.4 Soybean lees 2.7~2.8
Sesame (granular) 1.8~2.0 Soy bean oil 2.9~3.5
Shellac 2.3~3.8 Soda-lime glass 6.0~8.0
Shellac vanish 2.8~4.7 Sodium carbonate 2.7
Shell sand 1.2 Sodium dichromate 2.9
Silica alumina 2 Soft PVC resin 3.3~4.5
Silica sand 2.5~3.5 Soft vinyl butyral resin 3.92
Silicon 2.4 Steatite 5.3~6.8
Silicon 3.5~5.0 Steatite porcelain 6~7
Silicon iron 1.38 Styrene-butadiene rubber 3.0~7.0
Silicone resin 3.5~5 Styrene resin 2.3~3.4
Silicone resin (liquid) 3.5~5.0 Styrol resin 2.4~2.8
Silicone rubber 3.0~3.5 Sugar 3
Silicone vanish 2.8~3.3 Superphosphate 14.0~15.0
Silk 1.3~2    
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T

Talc 1.6~2.0 Titanium oxide 83~183
Teflon (4F) 2 Titanium oxide porcelain 30~80
Terekuru acid 1.5~1.7 Tobacco (shredded) 1.5
Terephthalic acid Approx. 1.5 to 1.7 Tokuseal 1.45
Thinner 3.7 Toluene 2.3
Thiokol 7.5 Transformer oil 2.2~2.4
Titanium dioxide 100 Trichloroethylene 3.4
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U

Unsaturated polyester resin 2.8~5.2 Urea resin 3.4~6.9
Urea 5~8 Urea resin 5.0~10.0
Urea-formaldehyde resin 6.0~9.0    
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V

Vacuum 1 Vinyl acetate 2.7~6.1
Vanadium dust 2.6 Vinyl alcohol 1.8~2.0
Vanadium sulfide 3.1 Vinyl formal resin 3.0~3.7
Vaseline 2.2~2.9 Vycor 3.8
Vinegar 37.6    
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X

Xylene 2.3 Xylol 2.7~2.8
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W

Water 80 Wheat flour 3.0~4.5
Wheat 3.0~5.0 Wood (depend on moisture content) 2.0~6.0
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Z

Zinc oxide 1.7~2.5    

Other substances than above can be detected or measured using our other products.For any questions about measuring materials, please feel free to contact us.

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Precautions for dielectric constants of powders

Powder and flake substances

The dielectric constants of powders and flaked materials are significantly smaller than [the established values for the same materials a solid. For example, although the dielectric constant of PVC is 5.8 to 6.4, powdered The constant for PVC is approximately 1.3 to 1.5.
This is because air is entrained in the powder (the dielectric constant of air is 1.000586). Powders that are fed by air have an even lower dielectric constant because there is even more air in the powder.
If powder is agitated in a tank, the dielectric constant becomes drops for the same reason.

Change in dielectric constant due to a change in temperature

The dielectric constant of some materials may change if their temperature changes. We recommend selecting product specifications according to the range of temperatures and the substance to be measured.

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