Chemistry:Disodium glutamate

Disodium glutamate

Names
IUPAC name Disodium 2-aminopentanedioate
Other names DSG
Identifiers
CAS Number	142-47-2 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	7969883 Y
PubChem CID	9794116
UNII	C3C196L9FG Y
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 Y Key: PXEDJBXQKAGXNJ-UHFFFAOYSA-L Y 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

Tracking categories (test):

• SizeSet

Disodium glutamate, abbreviated DSG, (Na₂C₅H₇NO₄) is a sodium salt of glutamic acid. It is 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).

See also

• Monosodium glutamate