Potassium fluoride is a fluoride salt having K+ as the counterion.
Definition
Potassium fluoride is a fluoride salt having K+ as the counterion. It has a role as a poison. It is a fluoride salt and a potassium salt.
Source: PubChem
US FDA substance register · UNII 9082WG1G3F · registered name POTASSIUM FLUORIDE · single chemical substance
Cosmetic roles
Safety & regulatory references
- Restricted
- Taiwan · United Kingdom
Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · MFDS (Korea) cosmetic regulatory information · Taiwan FDA cosmetic ingredients · Taiwan FDA cosmetic regulations · UK cosmetics regulations (OPSS)
Argentina · Brazil
- Field of application and/or use : (a) Toothpastes (b) Mouthwashes
- Maximum concentration permitted at final product : 0.15% expressed as fluorine. When it is mixed with other fluorine compounds permitted, the maximum concentration fluoride total must not exceed 0.15%
- Use conditions and warnings that must appear on the label : a) - Contains potassium fluoride For toothpaste containing 0.1% -0.15% fluoride, except if is already included that is contraindicated for children (e.g. “for adult use only”) it must contain the following warning: “Children under 6 years: Use an amount like a pea size, with adult supervision during brushing to minimize swallowing: b) - Contains potassium fluoride - Keep out of children reach. - Do not use in children under 6 years old.
ASEAN
- Field of application and/or use : Oral hygiene products
- Maximum authorised concentration in the finished cosmetic product : 0.15% calculated as F. When mixed with other fluorine compounds permitted under this Annex, total F concentration must not exceed 0.15%.
- Other limitations and requirements : Thailand only 0.11% calculated as F. When mixed with other fluorine compounds permitted under this Annex, total F concentration must not exceed 0.11%.
- Conditions of use and warning which must be printed on the labels : • Contains potassium fluoride • Children of 6 years and under: Use a pea sized amount for supervised brushing to minimize swallowing. In case of intake of fluoride from other sources consult a dentist or doctor(12)
European Union
- Product Type, body parts : Oral products
- Maximum concentration in ready for use preparation : 0,15 % calculated as F. When mixed with other fluorine compounds permitted under this Annex, total F concentration must not exceed 0,15 %
- Wording of conditions of use and warnings : Contains potassium fluoride For any toothpaste with compounds containing fluorine in a concentration of 0.1 to 0.1'5.0% calculated as F unless it is already labelled as contra-indicated for children (e.g. "for adult use only") the following labelling is obligatory: "Children of 6 years and younger: use a pea-sized amount for supervised brushing to minimise swallowing. In case of intake of fluoride from other sources consult a dentist or doctor."
Source: MFDS (Korea) cosmetic regulatory information
Korea’s toxic-substance GHS classification: Danger · H317 (category 1) · H331 (category 3) · H301 (category 3)
EU Cosmetics Regulation, Annex III (restricted substances), entry 32 · maximum concentration 0,15 % calculated as F. When mixed with other fluorine compounds permitted under this Annex, total F concentration must not exceed 0,15 % · applies to Oral products
Restriction III/32
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Names & identifiers
- CAS No.chemical registry number
- 7789-23-3
- EC No.EU chemical inventory number
- 232-151-5
- DTXSIDUS EPA chemical ID
- DTXSID8031940
- DTXCIDUS EPA compound ID
- DTXCID6011940
- IUPAC
- Potassium fluoride
- Molecular formula
- FK
- Molecular weight
- 58.0967 g/mol
Measured properties
- Appearance
- solid
- Colour
- white
- Melting/freezing point
- 846 ℃(1atm)
- Initial boiling point and range
- 1505 ℃(1atm)
- Vapour pressure
- 0.75 ㎜Hg(869℃)
- Water solubility
- 923 g/ℓ(18℃)
- Vapour density
- 2
- Relative density
- 2.48
- Molecular weight
- 58.096
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: KOSHA safety data sheets (Korea)
What products actually use it for
What the 15 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Processing aids not otherwise specified4
- Intermediate3
- Flux agent2
- Binder1
- Soil amendments1
- Plating agent1
- Abrasive1
- Catalyst1
1 other uses
- Pharmaceutical (EPA)1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
4 skin studies and 3 eye studies are on record.
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 7 studies
- Category 8.2C (Category 1C)
Skin Irritation · Read Across - Classification not possible
Skin Sensitization · Screening - Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to EPA OPP 81-6 (Skin Sensitisation) - Classification not possible
Skin Irritation · Screening - Classification not possible
Eye Irritation · Screening - Serious eye damage/eye irritation - Category 2
Eye Irritation · Screening - Category 8.3A (Category 1)
Eye Irritation · Read Across
Source: US EPA CompTox dashboard
Related literature
- The effect of topical applications of potassium fluoride and of the ingestion of tablets containing sodium fluoride on the incidence of dental caries · 2022
- Ecophysiological, anatomical and ultrastructural characteristics of Vitex polygama Cham. (Verbenaceae) submitted to different concentrations of fluoride · 2016
- An in vitro study of silver and fluoride ions on remineralization of demineralized enamel and dentine. · 2013
- Effect of silver and fluoride ions on enamel demineralization: a quantitative study using micro-computed tomography. · 2012
- Acúmulo e efeitos fitotóxicos do flúor em folhas de boldo‑gambá e capim‑cidreira utilizadas para chás · 2010
Linked databases 23
- ASEAN Cosmetic Directive
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- ChEMBL
- EU CosIng ingredient list 2
- EU Cosmetics Regulation
- EU restricted substances (Annex III)
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic regulatory information 2 3 4
- NIST Chemistry WebBook
- PubChem
- Taiwan FDA cosmetic ingredients
- Taiwan FDA cosmetic regulations
- Tlooto literature search 2 3 4 5
- UK cosmetics regulations (OPSS)
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · Korean · English · Japanese · Chinese