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ABS resin

2.4~4.1

Aluminum powder

1.6~

Bakelite

4.5~5.5

Beverage in glass bottle

2.0~2.5

Acetate

3.2~7.0

Alundum

3.2~3.4

Bakelite vanish

3.5~4.5

Black lead

12.0~13.0

Acetic acid

6.2

Aniline

6.9

Barium nitrate

5.9

Bleaching powder

1.8~2.0

Acetone

19.5

Aniline-formaldehyde resin

4

Barium titanate

1200

Bone black

5.0~6.0

Acetyl cellulose

2.5~7.5

Aniline resin

3.4~3.8

Bengala

2.6

Borosilicate

4.0~5.0

Acryl nitrile resin

3.5~4.5

Animal feed

3.0~5.0

Benzene

2.3

Butane

20

Acrylic resin

2.7~4.5

Amber

2.8~2.9

Benzene alcohol

13.1

Butyl rubber

2.5~3.5

Air

1.000586

Aminoalkyl resin

3.9~4.2

Beryl (parallel to optical axis)

6.08

Butyrate

3.2~6.2

Air (liquid)

1.5

Ammonia

15~25

Beryl (perpendicular to optical axis)

7.02

Alcohol

16~31

Aqueous solution

50~80

Calcite

8.3

Cevine

1.6~2.0

Alkyd resin

5

Aqueous solution

50~80

Calcium

3

Chez beer benzene

2.3

Alumina film

6~10

Asbestos

1.4~1.5

Calcium hydroxide (powder)

1.8~3.0

Chloroform

4.8

Alumina porcelain

8.0~11

Asbestos

3~3.5

Calcium phosphate

1.58

Chloronaphthalene

3.5~5.4

Alumino alkyd resin

3.9

Asbestos

3~3.6

Calcium phosphate

1.9~3.2

Chloropyrene

6.0~9.0

Aluminum hydroxide

2.2

Asphalt

2.7

Calcium silicate

2.4~5.4

Chromium ore

8.0~10.0

Aluminum oxide

2.14

AS resin

2.6~3.1

Carbide powder

5.8~7.0

Chromite

4.0~4.2

Darusamu

3.2

Diallele phthalate resin

3.3~6.0

Carbolic acid

10

Clay (powder)

1.8~2.8

Dextrin

2.2~2.4

Diamond

16.5

Carbon bisulfide (liquid)

2.6

Coal tar

2.0~3.0

Diallele phthalate

3.8~4.2

Dolomite

3.1

Carbon dioxide

1.000985

Cocoa lees

2.5~3.5

Feldspathic porcelain

5~7

Fluorinated aluminum

2.2

Carbon dioxide (liquid)

1.6

Coffee lees

2.4~2.6

Fellow chrome

1.5~1.8

Fluorite

6.8

Carbon tetrachloride

2.2~2.6

Compound

3.6

Ferric oxide (powder)

1.4~1.8

Flux

3

Casein resin

6.1~6.8

Corn lees

2.3~2.6

Ferrite (powder)

1.4~

Flyash

1.5~1.7

Celluloid

4.1~4.3

Cotton

3~7.5

Ferro-manganese

2.8~3.2

Formalin

23

Cellulose

6.7~8.0

Cotton seed oil

3.1

Ferrule resin

3.0~12.0

Formic acid

58.5

Cellulose acetate

3.2~7

Cresol

11.8

Fiber

2.5~5

Forsterite porcelain

5.8~6.7

Cellophane

6.1~7.7

Cross-linked polyethylene

2.3~2.4

Filling compound

3.6

Foundry sand

3.384~3.467

Cereals

3.0~5.0

Crude oil (KW#9020.01%)

2.428 or more

Film flake (black)

1.17~1.19

Freon

2.2

Gasoline

2.0~2.2

Glycol

35.0~40.0

Flexible glass

3.45

Freon 11

2.2

Glass

3.7~10.0

Glycerin

47

Flour

2.5~3.0

Furfural resin

4.0~8.0

Glass bead

3.1

Granular glass (0010)

6.32

Fluor resin

4.0~8.0

Furan resin

4.5~10.0

Glass, epoxy laminate plate

4.5~5.2

Granular glass (0080)

6.75

Hard PVC resin

2.8~3.1

Honey wax

2.5~2.9

Glass, silicone laminate plate

3.5~4.5

Granulated sugar (powder)

1.5~2.2

Hard vinyl butyral resin

3.33

Hydrogen

1.000264

Glass, polyester laminate plate

4.2~5

Granule gelatin

2.615~2.664

Helium (liquid)

1.05

Hydrogen (liquid)

1.2

Glucose

3.0~4.0

Gypsum

5.3

Honey

2.9

Glue (powder)

1.7~1.8

Magnesium sulfate (powder)

2.7 or more

Methyl violet

4.6

Naphtha

1.8

Nitrogen

1.000606

Manganese dioxide

5.1

Mica

5.7~7.0

Naphthalene

2.5

Nitrogen (liquid)

1.4

Marble

3.5~9.3

Micanite

3.4~8.0

Natural rubber

2.7~4.0

N-hexane

2

Margarine liquid

2.8~3.2

Micarex

6.5~9.5

Neoprene

6~9

Normal heptane

1.92

Melamine-formaldehyde resin

7.0~9.0

Micro hexane

2

Nescafe powder

0.55~0.7 vibration

Nylon

3.5~5.0

Melamine resin

4.7~10.2

Mineral oil

2~2.5

Nitrobenzene

36

Nylon-6

3.5~4.0

Methacrylic resin

2.2~3.2

Mirror stone

4.5~7.5

Nitro cellulose lacquer

6.7~7.3

Nylon-6-6

3.4~3.5

Methanol

33

Oxygen

1.000547

Oxygen dioxide (liquid)

2.6

Paint

7.5

Polyethylene (low pressure)

2.3

Palm lees

3.1

Polyethylene oxide

7.8

Quartz

3.7~4.1

Quartz glass

3.5~4.0

Paper

2.0~2.5

Polyethylene pellet

1.7

Quartz crystal

4.6

Quartz (melted)

3.5~4.5

Paper, phenol laminate plate

5.0~7.0

Polyethylene-telephthalate

2.9~3

Quartz crystal (melted)

3.5~3.6

Paraffin

1.9~2.5

Poly methyl acrylate

4

Rice powder

3.5~3.7

Rubber (raw)

2.1~2.7

Paraffin oil

4.6~4.8

Polypropylene

2.0~2.3

Rochelle salt

100~2000

Rubber (vulcanized)

2.0~3.5

Paraffin wax

2.1~2.5

Polypropylene pellet

1.5~1.8

Rosin oil (powder)

1.65

Ruby (parallel to optical axis)

11.28

Pebble

5.4~6.6

Polypropylene resin

2.2~2.6

Rubber cement

2.7~2.9

Ruby (perpendicular to optical axis)

13.27

PE cube

1.55~1.57

Polystyrene

2.4~2.6

Salt

3.0~15.0

Slate

6.6~7.4

Petroleum

2.0~2.2

Polystyrene pellet

1.5

Sand

3.0~5.0

Snow

3.3

Phenole (lime acid)

9.78

Polystyrol

2.0~2.6

Selenium

6.1~7.4

Soybean lees

2.7~2.8

Phenol paper laminate sheet

4.6~5.5

Polysulfonate

2.8

Sesame (granular)

1.8~2.0

Soy bean oil

2.9~3.5

Phenol pellet

2.0~2.6

Polytetrafluoroethylene

2

Shellac

2.3~3.8

Soda-lime glass

6.0~8.0

Phosphate rock

4

Poly urethane

5.0~5.3

Shellac vanish

2.8~4.7

Sodium carbonate

2.7

Pine oil

2.5

Polyvinyl alcohol

2

Shell sand

1.2

Sodium dichromate

2.9

Polyacetal resin

3.6~3.7

Porcelain

4.4~7.0

Silica alumina

2

Soft PVC resin

3.3~4.5

Polyamide

2.5~2.6

Pottery

5~7

Silica sand

2.5~3.5

Soft vinyl butyral resin

3.92

Polybutylene

2.2~2.3

Press board

2.0~5.0

Silicon

2.4

Steatite

5.3~6.8

Polybutylene resin

2.25

Propane (liquid)

1.6~1.9

Silicon

3.5~5.0

Steatite porcelain

6~7

Polycarbonate

2.9~3

Propionate

3.3~3.8

Silicon iron

1.38

Styrene-butadiene rubber

3.0~7.0

Polycarbonate powder

1.58

Propylene glycol

32

Silicone resin

3.5~5

Styrene resin

2.3~3.4

Polycarbonate resin

2.9~3.0

PVA-E(sawdust)

2.23~2.30

Silicone resin (liquid)

3.5~5.0

Styrol resin

2.4~2.8

Polyester pellet

3.2

P vinyl alcohol

1.8

Silicone rubber

3.0~3.5

Sugar

3

Polyester resin

2.8~8.1

Pyranol

4.4

Silicone vanish

2.8~3.3

Superphosphate

14.0~15.0

Polyethylene

2.3~2.4

Pyrex

4.8

Silk

1.3~2

Polyethylene (high pressure)

2.2

Xylene

2.3

Xylol

2.7~2.8