Barium sulfite

{{chembox

| verifiedrevid = 455116033

| Name = Barium sulfite

| ImageFile = Barium sulfite.svg

| ImageSize =240px

| ImageName = Structure of barium sulfite

| IUPACName = Barium sulfite

| OtherNames =

|Section1={{Chembox Identifiers

| CASNo = 7787-39-5

| CASNo_Ref = {{cascite|correct|??}}

| CASNoOther =

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = D71W8VF49C

| PubChem = 516931

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 450991

| SMILES = [Ba+2].[O-]S([O-])=O

| InChI = 1/Ba.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2

| InChIKey = ARSLNKYOPNUFFY-NUQVWONBAA

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/Ba.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = ARSLNKYOPNUFFY-UHFFFAOYSA-L

| RTECS =

| EINECS =

}}

|Section2={{Chembox Properties

| Formula = BaSO₃

| MolarMass = 217.391 g/mol

| Appearance = white monoclinic crystals

| Density = 4.44 g/cm³

| MeltingPt = decomposes

| BoilingPt =

| Solubility = 0.0011 g/100 mL

| SolubleOther = insoluble in ethanol

{{Citation

| last = Lide

| first = David R.

| author-link =

| year = 1998

| title = Handbook of Chemistry and Physics

| edition = 87

| volume =

| series =

| location = Boca Raton, Florida

| publisher = CRC Press

| id =

| isbn = 0-8493-0594-2

| doi =

| oclc =

| pages = 4–45

| url =

| accessdate =

}}

}}

|Section3={{Chembox Structure

| Coordination =

| CrystalStruct =

}}

|Section7={{Chembox Hazards

| ExternalSDS =

| NFPA-H =

| NFPA-F =

| NFPA-R =

| FlashPt =

}}

|Section8={{Chembox Related

| OtherAnions = Barium sulfate
Barium fluoride
Barium chloride
Barium bromide
Barium iodide

| OtherCations = Calcium sulfite
Magnesium sulfite

}}

}}

Barium sulfite is the inorganic compound with the chemical formula BaSO₃. It is a white powder that finds few applications. It is an intermediate in the carbothermal reduction of barium sulfate to barium sulfide:{{Ullmann |doi=10.1002/14356007.a03_325.pub2|title=Barium and Barium Compounds|year=2007|last1=Kresse|first1=Robert|last2=Baudis|first2=Ulrich|last3=Jäger|first3=Paul|last4=Riechers|first4=H. Hermann|last5=Wagner|first5=Heinz|last6=Winkler|first6=Jochen|last7=Wolf|first7=Hans Uwe|isbn=978-3527306732}}

:{{chem2 | BaSO4 + CO -> BaSO3 + CO2 }}