Input interpretation
sodium sulfite
Chemical names and formulas
formula | Na_2SO_3 Hill formula | Na_2O_3S name | sodium sulfite IUPAC name | disodium sulfite alternate names | anhydrous sodium sulfite | disodium sulfite | sodium sulphite | sulftech mass fractions | Na (sodium) 36.5% | O (oxygen) 38.1% | S (sulfur) 25.4%
Structure diagram
Structure diagram
vertex count | 6 edge count | 3 Schultz index | 36 Wiener index | 9 Hosoya index | 4 Balaban index | 2.324
Basic properties
molar mass | 126.04 g/mol phase | solid (at STP) melting point | 500 °C density | 2.63 g/cm^3
Units
Solid properties (at STP)
density | 2.63 g/cm^3
Units
Thermodynamic properties
specific heat capacity c_p | solid | 0.9545 J/(g K) molar heat capacity c_p | solid | 120.3 J/(mol K) specific free energy of formation Δ_fG° | solid | -80.33 kJ/g molar free energy of formation Δ_fG° | solid | -10125 kJ/mol specific heat of formation Δ_fH° | solid | -8.734 kJ/g molar heat of formation Δ_fH° | solid | -1101 kJ/mol molar heat of fusion | 25.9 kJ/mol | specific heat of fusion | 0.205 kJ/g | (at STP)
Chemical identifiers
![CAS number | 7757-83-7 PubChem CID number | 24437 SMILES identifier | [O-]S(=O)[O-].[Na+].[Na+] InChI identifier | InChI=1/2Na.H2O3S/c;;1-4(2)3/h;;(H2, 1, 2, 3)/q2*+1;/p-2/f2Na.O3S/q2m;-2 EU number | 231-821-4 Gmelin number | 140501 RTECS number | WE2150000](../image_source/b8d47c359c9b3f40746a1bd0585bf7d0.png)
CAS number | 7757-83-7 PubChem CID number | 24437 SMILES identifier | [O-]S(=O)[O-].[Na+].[Na+] InChI identifier | InChI=1/2Na.H2O3S/c;;1-4(2)3/h;;(H2, 1, 2, 3)/q2*+1;/p-2/f2Na.O3S/q2m;-2 EU number | 231-821-4 Gmelin number | 140501 RTECS number | WE2150000
NFPA label
NFPA label
NFPA health rating | 2 NFPA fire rating | 0 NFPA reactivity rating | 0
Toxicity properties
RTECS classes | tumorigen | mutagen
Ion equivalents
(SO_3)^(2-) (sulfite anion) | 1 Na^+ (sodium cation) | 2