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184.1610 Potassium alginate.
（a Potassium alginate （CAS Reg. No. 9005C36C1 is the potassium salt of alginic acid, a natural polyuronide constituent of certain brown algae. Potassium alginate is prepared by the neutralization of purified alginic acid with appropriate pH control agents.
（b The ingredient meets the specifications of the Food Chemicals Codex, 3d Ed. ?981? p. 239, which is incorporated by reference. Copies are available from the National Academy Press, 2101 Constitution Ave. NW., Washington, DC 20418, or available for inspection at the National Archives and Records Administration （NARA? For information on the availability of this material at NARA, call 202C741C6030, or go to:http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
（c In accordance with184.1（b）（2? the ingredient is used in food only within the following specific limitations:
| Category of food | Maximum level of use in food (as served) (percent) | Functional use |
| Confections and frostings,170.3(n)(9) of this chapter | 0.1 | Stabilizer, thickener, 170.3(o)(28) of this chapter |
| Gelatins and puddings, 170.3(n)(22) of this chapter | 0.7 | Do. |
| Processed fruits and fruit juices, 170.3(n)(35) of this chapter | 0.25 | Do. |
| All other food categories | 0.01 | Do. |
（d Prior sanctions for potassium alginate different from the uses established in this section do not exist or have been waived.
[47 FR 29951, July 9, 1982]
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