SYNONYMS 1,2-propane-diol ester of alginic acid; hydroxypropyl alginate; propane 1,2-diol alginate; INS No. 405.
DEFINITION Propylene glycol alginate is an ester of alginic acid in which some of the carboxyl groups are esterified with propylene glycol, some neutralized with an appropriate alkali and some remain free.
C.A.S. number 9005-37-2
Chemical formula (C9 H14 O7)n (esterified)
Formula weight Structural unit : 234.21 (theoretical)
Macromolecule : 10,000 - 600,000 (typical average)
Assay Yields, on the dried basis, not less than 16% and not more than 20% of carbon dioxide (CO2).
DESCRIPTION White to yellowish brown filamentous, grainy, granular or powdered forms
FUNCTIONAL USES Stabilizer, thickener, emulsifier
