Definition
US FDA substance register · UNII J86L1GUL6K · registered name POTASSIUM SILICATE · single chemical substance
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
Reviewed by CIR: Final Report on the Safety Assessment of Potassium Silicate, Sodium Metasilicate, and Sodium Silicate
Reviewed by CIR: Amended Safety Assessment of Silicates as Used in Cosmetics
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name ケイ酸Ｋ: 本品は、ケイ酸のカリウム塩である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 1312-76-1
- EC No.EU chemical inventory number
- 215-199-1
- DTXSIDUS EPA chemical ID
- DTXSID5029635
- DTXCIDUS EPA compound ID
- DTXCID009635
- IUPAC
- Potassium hydroxy(oxo)silanolate
- Molecular formula
- HKO3Si
- Molecular weight
- 116.188 g/mol
Measured properties
- Appearance
- solid
- Colour
- colourless
- Odour
- odourless
- Melting/freezing point
- (976 C)
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 36 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.
- Corrosion inhibitor16
- Binder4
- Soil amendments4
- Processing aids not otherwise specified3
- Viscosity modifier2
- Chelating agent2
- Filler2
- Preservative1
2 other uses
- Adhesion/cohesion promoter1
- Flow promoter1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
5 skin studies and 4 eye studies are on record.
The studies disagree (the most common conclusion covers 38%), so they do not establish that this ingredient is irritating. These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 9 studies
- Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to - Category 6.3A (Category 2)
Skin Irritation · Read Across - Moderate or Mild Irritation
skin irritation: in vivo · Screening · EPA OPPTS 870.2500 (Acute Dermal Irritation) according to - Moderate or Mild Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to - Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to EPA OPPTS 870.2600 (Skin Sensitisation) - Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to - Moderate or Mild Irritation
eye irritation: in vivo · Screening · EPA OPPTS 870.2400 (Acute Eye Irritation) according to - Moderate or Mild Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to - Category 6.4A (Category 2A)
Eye Irritation · Read Across
Source: US EPA CompTox dashboard
Related literature
- Enhancing Thin Film Properties of Chitosan–Collagen Biocomposites Through Potassium Silicate and Tannic Acid Integration · 2025
- Effect of Potassium Silicate, Glycine Betaine and Proline on Fruit Quality of Peaches in Newly Reclaimed Land Exposed to Heat Stress · 2024
- Effect of Foliar Fertilization with Potassium Silicate on some Morphological Characters of Strawberry Leaves Reducing Sucking Insects · 2023
- Potential Applications of Silicate Solubilizing Bacteria and Potassium Silicate on Sugarcane Crop under Drought Condition · 2023
- EFFECTS OF POTASSIUM SILICATE APPLICATION ON PAPAYA PLANTS IN THE TWOSPOTTED SPIDER MITE POPULATION · 2017
Linked databases 16
- Australian Industrial Chemicals Inventory (AICIS)
- China inventory of existing ingredients (IECIC)
- EU CosIng ingredient list 2
- JCIA labelling names (Japan)
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register 2
- Tlooto literature search 2 3 4 5
- UniChem cross-reference IDs
- US Cosmetic Ingredient Review (CIR) 2 3
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata