High Purity Silicon
Print E-mail

 

 

silicon

 

 

MATERIAL OVERVIEW

Characteristics: Dark colored crystals (the octahedral form in which the atoms have the diamond arrangement). The amorphous form is a dark brown powder. Soluble in a mixture of nitric and hydrofluoric acids and in alkalies. Insoluble in water, nitric and hydrochloric acid. Mohs hardness 7, dielectric constant 12, coordination number 6. Si atom is surrounded by 4 oxygen atoms. In this respect it is similar to carbon, except that it does not form compounds having double or triple bonds, and is less electronegative.

Hazards: Flammable in powder form.

To view a photo of the item hover over the camera_nopreview icon.

 

GENERAL PROPERTIES

Symbol:

Si

Atomic Number:

14

Atomic Weight:

28.0855

Density:

2.33 gm/cc

Melting Point:

1410 oC

Boiling Point:

2355 oC

Thermal Conductivity:

1.49 W/cm/K @ 298.2 K

Electrical Resistivity:

3-4 microhm-cm @ 0 oC

Electronegativity:

1.8 Paulings

Specific Heat:

0.168 Cal/g/K @ 25 oC

Heat of Vaporization:

40.6 K-Cal/gm atom at 2355 oC

Heat of Fusion:

9.47 Cal/gm mole

 

TYPICAL ANALYSES

Impurities in ppm

Material / Purity:

3N

6N

Al 110 .007
B 40 .025
Ca 20 <.005
Fe <100 .005
Mg <10 .001
Mn <60 .001
P 40 .002
Ti <40 .0007
Cu - .004
Li - .002
Zn - <.03
As - .051
Na - .011
S - .060
Cl - .45
K - .011
V - .0004
Cr - .002
Co - .0006
Ni - <.005


SILICON ROD

 

Material

Purity

Silicon Rod .0625"  camera1  camera1
 6N
Silicon Rod .125"    camera1  camera1
 5N
Silicon Rod .250"    camera1  camera1
 5N, 6N
Silicon Rod .500"
 5N

 

SILICON POWDER, SHOT, PELLETS, & INGOT

 

Material

Purity

Silicon Lump 1N8, 5N5, 6N, 7N+
Silicon Pieces 3-6mm  camera1 4N, 5N, 6N
Silicon Powder -200 mesh 1N8, 2N1
Silicon Powder -325 Mesh 2N8

Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram.

 

SILICON COMPOUNDS

Material

Purity

Silicon Carbide SiC  7 Microns or Less 2N5
Silicon Carbide SiC  -325 Mesh 2N
Silicon Dioxide SiO2  1/2"-1/8" Pieces 3N, 4N
Silicon Dioxide SiO2  -10 Mesh 5N
Silicon Dioxide SiO2  1/8" Pieces by Down 4N
Silicon Dioxide SiO2  -100 Mesh 4N
Silicon Dioxide SiO2  -325 Mesh 3N
Silicon Dioxide SiO2  -4  +16 Mesh 3N
Silicon Monoxide SiO  1/4" to 1/8" Pieces 3N, 4N
Silicon Monoxide SiO  -325 Mesh 3N, 4N
Silicon Nitride Si3N4  -325 Mesh 1N8, 2N5, 3N
Silicon Nitride Si3N4  1/2" to 1/8" Pieces 1N8
Silicon Sulfide SiS2  Sublimed 3N
Silicon Sulfide SiS2  1" Pieces by Down 1N5

Compounds are packaged to order and sold by the gram or kilogram.

 

Material Safety Data Sheet - MSDS
Silicon MSDS
Technical Data Sheets
Understanding Mesh Sizes
 
Copyright 2013 | ESPICorp Inc. (800) 638-2581 - sales@espimetals.com