Table of dielectric constants of substances
Table of dielectric constants of substances
Precautions for dielectric constants of powders
Outline of capacitance: What is capacitance?
Outline of dielectric constant: What is dielectric constant?
Measurements using dielectric constants and capacitances
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|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z|
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 |
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 |
|
|
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 |
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 |
E
| Ethyl acetate |
6.4 |
Ethylene oxide |
4.0~5.0 |
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 |
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 |
|
|
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 |
|
|
I
K
L
| Lead nitrate |
37.7 |
Light oil |
1.8 |
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 |
|
|
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 |
O
| Oxygen |
1.000547 |
Oxygen dioxide (liquid) |
2.6 |
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 |
|
|
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 |
|
|
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 |
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 |
|
|
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 |
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 |
|
|
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 |
|
|
X
W
| Water |
80 |
Wheat flour |
3.0~4.5 |
| Wheat |
3.0~5.0 |
Wood (depend on moisture content) |
2.0~6.0 |
Z
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.
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.
