Input interpretation
silicon
Chemical names and formulas
formula | Si name | silicon alternate names | silicon metal mass fractions | Si (silicon) 100%
Structure diagram
Structure diagram
Basic properties
molar mass | 28.085 g/mol phase | solid (at STP) melting point | 1410 °C boiling point | 2355 °C density | 2.33 g/cm^3 solubility in water | insoluble
Units
Solid properties (at STP)
density | 2.33 g/cm^3
Units
Thermodynamic properties
specific heat capacity c_p | gas | 0.794 J/(g K) | solid | 0.7121 J/(g K) molar heat capacity c_p | gas | 22.3 J/(mol K) | solid | 20 J/(mol K) specific free energy of formation Δ_fG° | gas | 14.44 kJ/g molar free energy of formation Δ_fG° | gas | 405.5 kJ/mol specific heat of formation Δ_fH° | gas | 16.02 kJ/g | solid | 0 kJ/g molar heat of formation Δ_fH° | gas | 450 kJ/mol | solid | 0 kJ/mol molar heat of vaporization | 359 kJ/mol | specific heat of vaporization | 12.8 kJ/g | molar heat of combustion | 9055 kJ/mol | specific heat of combustion | 322.4 kJ/g | molar heat of fusion | 50.21 kJ/mol | specific heat of fusion | 1.788 kJ/g | thermal conductivity | 149.6 W/(m K) | (at STP)
Chemical identifiers
![CAS number | 7440-21-3 PubChem CID number | 5461123 PubChem SID number | 24852253 SMILES identifier | [Si] InChI identifier | InChI=1/Si RTECS number | VW0400000 MDL number | MFCD00085311](../image_source/618fe62105780fd4f207efb787c6f923.png)
CAS number | 7440-21-3 PubChem CID number | 5461123 PubChem SID number | 24852253 SMILES identifier | [Si] InChI identifier | InChI=1/Si RTECS number | VW0400000 MDL number | MFCD00085311
NFPA label
NFPA label
NFPA health rating | 1 NFPA fire rating | 0 NFPA reactivity rating | 0
Safety properties
autoignition point | 150 °C
DOT hazard class | 4.1 DOT numbers | 1346
Toxicity properties
RTECS classes | primary irritant