Sodium fluoride
Sodium fluorideCAS 7681-49-4
Listed as a thickener and a stabiliser by the US.
Listed as thickeners (US) · stabilisers (US)
- United States: Stabilizer or thickener — FDA, Substances Added to Food: SODIUM FLUORIDE
- United States: Stabilizer or thickener — FDA, Substances Added to Food: SODIUM FLUORIDE
Sodium fluoride is an inorganic fluoride salt. South Korea lists it among its nutrient fortifiers. FDA's inventory cites it only in food-contact sections (21 CFR 175.105 and 177.2800), which are not a listing as a food additive.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| Australia and New Zealand | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Canada | No listing matchedHealth Canada’s lists name additives without E or INS numbers, so this site matches them by exact name. A substance listed there under a name this site does not recognise has no row here. | ||
| European Union | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Great Britain | No listed food uses foundThis site has not matched this substance to any food use on this jurisdiction’s list of authorised food additives. A food additive may be used only in foods that list names. Flavourings, enzymes, processing aids and added nutrients are regulated separately and do not appear on it. | ||
| Japan | No listing matchedThis site imports only Japan’s list of designated additives (Appended Table 1 to the Regulations for Enforcement of the Food Sanitation Act), matched by English name. Existing additives, natural flavouring agents and ordinary foods used as additives are permitted outside that list and are not imported, so an empty row does not show that Japan does not permit the substance. | ||
| South Korea | Permitted, with conditions | Designated food additive: Standards and Specifications for Food Additives, Part III, 3. …Designated food additive: Standards and Specifications for Food Additives, Part III, 3. 영양강화제 (nutrient fortifiers), 불화나트륨; nutrient: 불소(F). Standard for use (사용기준) of 불화나트륨: (1) [may be used only in the foods listed] “불화나트륨은 아래의 식품에 한하여 사용하여야 한다. 1. 일반 환자용 균형영양조제식품” The Korean is the standard as published. There is no official English translation of the current Code (the English version on MFDS’s website is the 2020 edition and has no legal effect); the English in square brackets is this site’s description of what each sentence does, not a translation of the foods or the levels. Compositional specifications (Part IV) are not imported, nor are the general standards in Part II, which apply to every additive. | Standards and Specifications for Food Additives (식품첨가물의 기준 및 규격), MFDS Notification, Part III (Standards for use, by item)retrieved 2026-10-18 |
| United States | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. | ||
| Codex Alimentarius | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. |
How much is permitted
A listing usually limits the quantity as well as the food. Only one of the forms that takes is a figure: quantum satis and good manufacturing practice permit the amount the technological effect requires and no more, which is a limit rather than the absence of one. Figures below are the range across every food category this page is listed in, and categories differ between regulators — see how much is permitted.
| South Korea | — | 1 no quantity stated |
|---|
No regulator sets a figure for Sodium fluoride. That is not an absence of control: where the listing says quantum satis or good manufacturing practice, the quantity is limited to what the effect requires.
What FDA’s inventory records
This page holds no listing for Sodium fluoride in the parts of 21 CFR this site reads. FDA’s Substances Added to Food inventory does carry it, as SODIUM FLUORIDE, pointing at a food-contact regulation, not a listing for use in food: 21 CFR 175.105, 21 CFR 177.2800.
Technical effects FDA records: stabilizer or thickener.
The inventory is an information resource: a row means FDA holds information about the substance’s use in food, not that the substance is listed for that use. It is shown apart from the permissions above and is not counted as a US permission anywhere on this site.
What it is made from
The sources cited here do not say how it is made, so this page claims no route.
- CAS registry number
- 7681-49-4
Every name it appears under
1 recorded name. A label may use any of them.
Other names
- Sodium fluoride
Hazard reference values
No reference value for this substance in the sources we hold.
Evidence and how bodies read it
Studies, and the differing conclusions regulators drew from them, are curated rather than machine-read, and none has been written for this substance yet.
Common questions
Assembled from what is above, in the words the questions are usually asked in. Each answer is the same statement the relevant section makes, with the same citations behind it.
- What is Sodium fluoride?
- Sodium fluoride is an inorganic fluoride salt. South Korea lists it among its nutrient fortifiers. FDA's inventory cites it only in food-contact sections (21 CFR 175.105 and 177.2800), which are not a listing as a food additive.
- What is Sodium fluoride used for in food?
- It is listed as a thickener and a stabiliser — the role the US assigns it. This page shows every function each regulator records, with the citation for each.
- Where is Sodium fluoride permitted?
- Of the seven regulators this site reads, South Korea permits it. Each permission is for named foods at named levels, not a blanket one; the table on this page gives them with citations.
Sources for this page
- kr retrieved 2026-10-18
Full licence terms and publisher details on Sources. How this page is built and updated: Method.
Machine-readable: a JSON record of this additive is given on request —how to ask for access.
Follow changes to Sodium fluoride:Atom feed — regulatory events, and any change the weekly refresh detects in its provisions.