AMMONIUM ALGINATE
Prepared at the 49th JECFA (1997) , published in FNP 52 Add 5 superseding specifications prepared at the 44th JECFA (1995), published in FNP 52 Add 3 (1995). Metals and arsenic specifications revised at the 57th JECFA (2001) An ADI 'not specified' was established at the 39th JECFA (1992)
SYNONYMS INS No. 403
DEFINITION Ammonium salt of alginic acid.
C.A.S. number 9005-34-9
Chemical formula (C6 H11 NO6)n
Structural formula
Structural formula from Phillips, Wedlock and Williams: Gums and Stabilizers for the Food Industry 5 (1990) by permission of Oxford University Press.
The number and sequence of the Mannuronate and Glucuronate residues shown above vary in the naturally occurring alginate. The associated water molecules are not shown.
Formula weight Structural unit : 193.16 (theoretical), 217 (actual average) Macromolecule : 10,000 - 600,000 (typical average) Assay Yields, on the dried basis, not less than 18.0% and not more than 21.0% of carbon dioxide (CO2), equivalent to not less than 88.7% and not more than 103.6% of ammonium alginate C6H11 NO6)n.
DESCRIPTION White to yellowish brown filamentous, grainy, granular or powdered forms
FUNCTIONAL USES Stabilizer, thickener, gelling agent, emulsifier
