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Food Additives

Propyleneglycol Alginate Cas 9005-37-2

Propylene glycol alginate is abbreviated as PGA, which belongs to alginate esters. Propylene glycol alginate is made from alginic acid extracted from natural seaweed by deep processing. Appearance is white or yellowish-white powder, almost odorless or slightly aromatic, tasteless, hygroscopic, easily soluble in cold or warm water to form a viscous colloidal solution. Insoluble in methanol, ethanol, benzene and other organic solvents.

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Product Name:Propyleneglycol alginate

Synonym: PGA;1,2-Propanediol alginate


Molecular Fomula(C9H14O70n


Items Standard
CAS No 9005-37-2
Molecular Formula (C9H14O70n
Appearance White powder
Taste Neutral
Viscosity(mpa.s)(1% solution) 300-500
Esterification Degree % >85
Moisture % <15
PH value 3.4-4.1
As(mg/kg) <2
Lead(mg/kg) <5
Mercury(mg/kg) <1
Cadmium(mg/kg) <1
Total plate count(cfu/g) <1000
Yeast mould(cfu/g) <100
E.coli Negative


Packing:   25kg/bag



  1. Used as stabilizer, thickener, emulsifier, foaming agent and spice extraction solvent. Because of its propylene glycol group in the molecule, it is commonly used in low pH range foods such as lactic acid beverages and fruit juice beverages.
  2. It is used in cold drinksand medicines with functions of emulsification, thickening and stability.
  3. Mainly used as emulsion stabilizer and thickener


Storage: Sheltered, dry, dark place for storage.


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