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Ingredients

Ingredient Dictionary

POTASSIUM FLUORIDE

Potassium fluoride is a fluoride salt having K+ as the counterion.

Molecular structure

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

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Cares for the mouthORAL CAREPrevents plaqueANTIPLAQUE

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)

Source: Korea toxic substances GHS register (NIER)

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

Source: EU restricted substances (Annex III)

Restriction III/32

Source: EU CosIng ingredient list

More data — names, identifiers, properties, test records, literature

Names & identifiers

POTASSIUM FLUORIDEINCI포타슘플루오라이드Korean label name (MFDS standard)Potassium fluoride (KF)Synonym
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.

Classed as low1

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

Linked databases 23