Propylene Glycol Alginate PGA | 9005-37-2

(1)Colorcom Propylene glycol alginate (PGA) is a new type of excellent food additive. It is made by deep processing of alginic acid extracted from natural seaweed. The appearance is white or light yellow powder. It is often used as a thickening, stabilizing and emulsifier for beverage products.
(2)In addition to its thickening effect, propylene glycol alginate has the amphiphilic structure of surfactants, as well as emulsifying ability and foam stability, and has a stabilizing effect on oily colloids. ; Because this product is a non-ionic compound, it is also very stable to some metal ions and will not solidify and precipitate.
(3)White or slightly yellowish-white fibrous powder or coarse powder, almost odorless and tasteless. It is soluble in water and dilute organic acid solution, but insoluble in methanol, ethanol, benzene and other organic solvents, but the partially esterified product can be dissolved in ethanol solution with a content of less than 60%. Its pH value is 3-4 (1% aqueous solution), it is easy to absorb moisture, it turns brown when heated to 55 °C, carbonization occurs at 220 °C, and ashing occurs at 400 °C. Its relative density is 1.46. It neither gels nor precipitates in the acidic solution of pH 3-4.
(4)It has the ability to resist salting out, and is stable to other metal ions except copper, chromium, iron (trivalent), lead, barium and other ions that are unstable.