Potassium malate: Difference between revisions

{{short description|Chemical compound}}

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 428776573

| ImageFile=Potassium malate.svg

| ImageSize=150px

| IUPACName=dipotassium 2-hydroxybutanedioate

| OtherNames=Dipotassium malate; E351

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

| CASNo=585-09-1

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

| UNII = 5YO4AE78DB

| PubChem=164689

| SMILES=C(C(C(=O)[O-])O)C(=O)[O-].[K+].[K+]

| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}

| ChemSpiderID = 144374

| InChI = 1/C4H6O5.2K/c5-2(4(8)9)1-3(6)7;;/h2,5H,1H2,(H,6,7)(H,8,9);;/q;2*+1/p-2

| InChIKey = SVICABYXKQIXBM-NUQVWONBAI

| StdInChI_Ref = {{stdinchicite|changed|chemspider}}

| StdInChI = 1S/C4H6O5.2K/c5-2(4(8)9)1-3(6)7;;/h2,5H,1H2,(H,6,7)(H,8,9);;/q;2*+1/p-2

| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}

| StdInChIKey = SVICABYXKQIXBM-UHFFFAOYSA-L

| C=4 | H=4 | K=2 | O=5

| Appearance=

| Density=

| MeltingPt=

| BoilingPt=

| Solubility=

| MainHazards=

| FlashPt=

| AutoignitionPt =

As a food additive, it has the [[E number]] E351.<ref>{{cite web | url = https://www.food.gov.uk/business-guidance/approved-additives-and-e-numbers | title = Approved additives and E numbers | publisher = UK Food Standards Agency }}</ref> It is used as [[acidity regulator]] or acidifier for use in, for example, canned vegetables, soups, sauces, fruit products, and soft drinks. It also acts as an [[antioxidant]] and a food flavoring agent.

It is an important compound in the transport of nitrate from the roots of a plant to the leaves of the plant. Potassium malate is the salt that transports from the leaves to the root. At the root, the potassium malate oxidizes to potassium carbonate, then is converted to potassium nitrate by soil nitrate and transported back to the leaves.{{cn|date=November 2023}}

==References==

{{reflist}}

[[Category:Malates]]

[[Category:Potassium compounds]]

[[Category:Food additives]]

[[Category:E-number additives]]