ammonium alginate

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| Name = Ammonium alginate

| ImageFile = Alginat.svg

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| OtherNames = E403

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| CASNo = 9005-34-9

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| PubChem = 135314377

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| Section2 = {{Chembox Properties

| N=1|H=11|O=6|C=6

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| Appearance = brown solid

| Density = 1.79 g/cm3

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| BoilingPt = 300 °C

| Solubility = soluble

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Ammonium alginate is a chemical compound with the chemical formula {{chem2|NH4C6H7O6}}.This is an organic ammonium salt of alginic acid.{{cite web |title=ALGINIC ACID, AMMONIUM SALT |url=https://www.sigmaaldrich.com/RU/en/product/aldrich/s371718 |publisher=Sigma Aldrich |access-date=9 March 2025}}{{cite book |last1=Ahmed |first1=Shakeel |title=Alginates: Applications in the Biomedical and Food Industries |date=13 February 2019 |publisher=John Wiley & Sons |isbn=978-1-119-48798-2 |page=206 |url=https://www.google.ru/books/edition/Alginates/xhmIDwAAQBAJ?hl=en&gbpv=1&dq=Ammonium+alginate&pg=PA266&printsec=frontcover |access-date=10 March 2025 |language=en}} This is also a natural polyuronide found in certain brown algae.{{cite book |title=Code of Federal Regulations: Containing a Codification of Documents of General Applicability and Future Effect as of December 31, 1948, with Ancillaries and Index |date=1999 |publisher=Division of the Federal Register, the National Archives |page=462 |url=https://www.google.ru/books/edition/Code_of_Federal_Regulations/zIcwAAAAMAAJ?hl=en&gbpv=1&dq=Ammonium+alginate&pg=PA462&printsec=frontcover |access-date=10 March 2025 |language=en}}

Physical properties

The compound exists in white to yellowish brown filamentous, grainy, granular, or powdered forms.{{cite web |title=AMMONIUM ALGINATE |url=https://www.fao.org/fileadmin/user_upload/jecfa_additives/docs/Monograph1/Additive-020.pdf |publisher=FAO |access-date=10 March 2025}}

Soluble in water.{{cite book |last1=Jana |first1=Sougata |last2= |first2= |title=Micro- and Nanoengineered Gum-Based Biomaterials for Drug Delivery and Biomedical Applications |date=21 January 2022 |publisher=Elsevier |isbn=978-0-323-90987-7 |page=261 |url=https://www.google.ru/books/edition/Micro_and_Nanoengineered_Gum_Based_Bioma/L788EAAAQBAJ?hl=en&gbpv=1&dq=Ammonium+alginate&pg=PA261&printsec=frontcover |access-date=10 March 2025 |language=en}}

Uses

The compound is used in the food industry as a stabilizer, thickener, gelling agent, emulsifier (food additive E403).{{cite book |last1=Burdock |first1=George A. |title=Encyclopedia of Food and Color Additives |date=1997 |publisher=CRC Press |isbn=978-0-8493-9412-6 |page=64 |url=https://www.google.ru/books/edition/Encyclopedia_of_Food_and_Color_Additives/IGyfZA6JHZMC?hl=en&gbpv=1&dq=Ammonium+alginate&pg=PA64&printsec=frontcover |access-date=10 March 2025 |language=en}}

References