Ammonium fumarate

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| verifiedrevid = 477366608

| ImageFile =Ammonium fumarate.svg

| ImageSize =200px

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| IUPACName =

| SystematicName = Ammonium (E)-but-2-enedioate

| OtherNames = Diammonium fumarate; E368

|Section1={{Chembox Identifiers

| CASNo = 14548-85-7

| CASNo_Comment = (2:1 salt)

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

| CASNo1 = 32378-54-4

| CASNo1_Comment = (unspecified salt)

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

| UNII = YG927OP0BK

| UNII_Comment = (2:1 salt)

| PubChem = 6440849

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

| ChemSpiderID = 4945093

| SMILES = O=C(O)\C=C\C(=O)O.N.N

| InChI = 1/C4H4O4.2H3N/c5-3(6)1-2-4(7)8;;/h1-2H,(H,5,6)(H,7,8);2*1H3/b2-1+;;

| InChIKey = CKKXWJDFFQPBQL-SEPHDYHBBX

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

| StdInChI = 1S/C4H4O4.2H3N/c5-3(6)1-2-4(7)8;;/h1-2H,(H,5,6)(H,7,8);2*1H3/b2-1+;;

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

| StdInChIKey = CKKXWJDFFQPBQL-SEPHDYHBSA-N

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|Section2={{Chembox Properties

| C=4 | H=10 | N=2 | O=4

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Ammonium fumarate is a compound with formula (NH₄)₂(C₂H₂(COO)₂). It is the ammonium salt of fumaric acid. As a food additive, it has the E number E368.