Basic information Description Uses Crystal System Production Methods Safety Related Supplier
Silicon Structure

Silicon

Chemical Properties

Melting point 1410 °C(lit.)
Boiling point 2355 °C(lit.)
Density  2.33 g/mL at 25 °C(lit.)
storage temp.  Flammables area
solubility  insoluble in H2O, acid solutions; soluble in alkaline solutions
form  powder
Specific Gravity 2.42
color  White
PH 13.5 (H2O, 20°C)
Odor Odorless
Water Solubility  INSOLUBLE
Sensitive  Air Sensitive
Crystal Structure Cubic, Diamond Structure - Space Group Fd3m
Merck  13,8565
Dielectric constant 2.4(Ambient)
Exposure limits ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
Stability Stable. Fine powder is highly flammable. Incompatible with oxidizing agents, bases, carbonates, alkali metals, lead and aluminium oxides, halogens, carbides, formic acid.
InChIKey BLRPTPMANUNPDV-UHFFFAOYSA-N
CAS DataBase Reference 7440-21-3(CAS DataBase Reference)
NIST Chemistry Reference Silicon(7440-21-3)
EPA Substance Registry System Silicon (7440-21-3)

Safety Information

Hazard Codes  T,F
Risk Statements  11
Safety Statements  26-36/37-45-7/9-33-16-36
RIDADR  UN 2922 8/PG 2
WGK Germany  2
RTECS  VW0400000
Autoignition Temperature 780°C
TSCA  Yes
HS Code  3822 00 00
HazardClass  4.1
PackingGroup  III
Hazardous Substances Data 7440-21-3(Hazardous Substances Data)

MSDS

Usage And Synthesis

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