Disodium glutamate

Disodium glutamate
Names
	IUPAC name Disodium 2-aminopentanedioate
	Other names DSG
Identifiers
CAS Number	142-47-2 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	7969883 ;
PubChem CID	9794116;
UNII	C3C196L9FG ;
	InChI InChI=1S/C5H9NO4.2Na/c6-3(5(9)10)1-2-4(7)8;;/h3H,1-2,6H2,(H,7,8)(H,9,10);;/q;2+1/p-2 Key: PXEDJBXQKAGXNJ-UHFFFAOYSA-L ; InChI=1/C5H9NO4.2Na/c6-3(5(9)10)1-2-4(7)8;;/h3H,1-2,6H2,(H,7,8)(H,9,10);;/q;2+1/p-2 Key: PXEDJBXQKAGXNJ-NUQVWONBAI;
	SMILES C(CC(=O)[O-])C(C(=O)[O-])N.[Na+].[Na+]; [Na+].[Na+].O=C([O-])CCC(N)C([O-])=O;
Properties
Chemical formula	C5H7NNa2O4
Molar mass	191.09 g/mol
Appearance	white crystalline powder
Odor	practically odorless
Boiling point	225 °C (437 °F; 498 K) (decomposes)
Solubility in water	73.9 g/100 mL (25 °C)
Solubility	sparingly soluble in alcohol
Acidity (pKa)	6.8
Hazards
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	16600 mg.mg (rat, oral)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Disodium glutamate, abbreviated DSG, (Na₂C₅H₇NO₄) is a sodium salt of glutamic acid. It used as a flavoring agent to impart umami flavor.

Formation

Disodium glutamate can be produced by neutralizing glutamic acid with two molar equivalents of sodium hydroxide (NaOH).