Propylene glycol alginate
Propylene glycol alginate (PGA) is an emulsifier, stabilizer, and thickener used in food products. It is a food additive with E number E405. Chemically, propylene glycol alginate is an ester of alginic acid, which is derived from kelp. Some of the carboxyl groups are esterified with propylene glycol, some are neutralized with an appropriate alkali, and some remain free.[1]
| Names | |
|---|---|
| Other names
Hydroxypropyl alginate, Propane 1,2-diol alginate, E405 | |
| Identifiers | |
| ChemSpider |
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| ECHA InfoCard | 100.123.773  |
| EC Number |
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| E number | E405 (thickeners, ...) |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| Molar mass | 234.21 per structural unit (theoretical) |
| Appearance | white to yellowish brown filamentous, grainy, granular or powdered forms |
| Soluble | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is  ?) | |
| Infobox references | |
References
- Propylene glycol alginate, Food and Agriculture Organization of the United Nations
External links
- What is the "propylene glycol alginate" found in salad dressings? at The Straight Dope
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