:Monosodium phosphate

{{Chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 462253577

| ImageFile1 = monosodium phosphate.png

| ImageSize1 = 150px

| ImageFile2 = Sodium-dihydrogen-phosphate-3D-vdW.png

| ImageSize2 = 140px

| ImageCaption2 = {{legend|orange|Phosphorus, P}}{{legend|red|Oxygen, O}}{{legend|white|Hydrogen, H}}{{legend|rgb(160, 84, 232)|Sodium, Na}}

| ImageName2 = Ball-and-stick model of the dihydrogenphosphate anion

| ImageFile3 = Dihydrogenfosforečnan sodný.JPG

| IUPACName = Sodium dihydrogen phosphate

| OtherNames = {{ubl|Monobasic sodium phosphate|Sodium biphosphate}}

| Section1 = {{Chembox Identifiers

| CASNo = 7558-80-7

| CASNo_Ref = {{cascite|correct|CAS}}

| UNII_Ref = {{fdacite|changed|FDA}}

| UNII = KH7I04HPUU

| ChEMBL_Ref = {{ebicite|correct|EBI}}

| ChEMBL = 1368

| PubChem = 24204

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

| ChemSpiderID = 22626

| ChEBI_Ref = {{ebicite|correct|EBI}}

| ChEBI = 37585

| SMILES = [Na+].[O-]P(=O)(O)O

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

| StdInChI = 1S/Na.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

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

| StdInChIKey = AJPJDKMHJJGVTQ-UHFFFAOYSA-M

}}

| Section2 = {{Chembox Properties

| Formula = {{chem2|NaH2PO4}}

| Na=1|H=2|P=1|O=4

| Appearance = White powder or crystals

| Density = 2.36 g/cm³ (anhydrous)

| MeltingPt =

| BoilingPt =

| Solubility = 59.90 g/(100 mL) (0°C)

}}

| Section7 = {{Chembox Hazards

| ExternalSDS =

| NFPA-H = 0

| NFPA-F = 0

| NFPA-R = 0

| MainHazards =

| FlashPt = Non-flammable

}}

| Section8 = {{Chembox Related

| OtherAnions =

| OtherCations = {{ubl|Monopotassium phosphate|Monoammonium phosphate}}

| OtherCompounds = {{ubl|Disodium phosphate|Trisodium phosphate}}

}}

}}

Monosodium phosphate (MSP), also known as monobasic sodium phosphate and sodium dihydrogen phosphate, is an inorganic compound with the chemical formula {{chem2|NaH2PO4|auto=1}}. It is a sodium salt of phosphoric acid. It consists of sodium cations ({{chem2|Na+}}) and dihydrogen phosphate anions ({{chem2|H2PO4−}}). One of many sodium phosphates, it is a common industrial chemical. The salt exists in an anhydrous form, as well as monohydrate and dihydrate ({{chem2|NaH2PO4*H2O}} and {{chem2|NaH2PO4*2H2O}} respectively).{{Ullmann|first1=Klaus|last1=Schrödter|first2=Gerhard|last2=Bettermann|first3=Thomas |last3=Staffel|first4=Friedrich|last4=Wahl|first5=Thomas|last5=Klein||first6=Thomas|last6=Hofmann|title=Phosphoric Acid and Phosphates|year=2008|doi=10.1002/14356007.a19_465.pub3}}