Potassium fumarate

Potassium fumarate
Names
	Preferred IUPAC name Dipotassium (2E)-but-2-enedioate
	Other names potassium fumarate, potassium (E)-butenedioate, Dipotassium fumarate, Fumaric acid, EINECS 223-979-8, 4151-35-3, 7704-72-5
Identifiers
CAS Number	7704-72-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	4938656 ;
ECHA InfoCard	100.119.574
E number	E366 (antioxidants, ...)
PubChem CID	6433511;
UNII	8Z42Z85852 ;
CompTox Dashboard (EPA)	DTXSID40894985 ;
	InChI InChI=1S/C4H4O4.2K/c5-3(6)1-2-4(7)8;;/h1-2H,(H,5,6)(H,7,8);;/q;2+1/p-2/b2-1+;; Key: SHPKCSFVQGSAJU-SEPHDYHBSA-L ; InChI=1/C4H4O4.2K/c5-3(6)1-2-4(7)8;;/h1-2H,(H,5,6)(H,7,8);;/q;2+1/p-2/b2-1+;; Key: SHPKCSFVQGSAJU-HYKNURKJBN;
	SMILES [K+].[K+].[O-]C(=O)\C=C\C([O-])=O;
Properties
Chemical formula	K2C4H2O4
Molar mass	192.253g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium fumarate is a compound with formula K₂C₄H₂O₄. It is the potassium salt of fumaric acid.

It has E number "E366".

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