What does Potassium alginate do?

Used in cosmetics as a binder, an emulsion stabiliser and a thickener.

Is Potassium alginate safe?

We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

beauty
industrial

Potassium alginate

CAS 1841074-27-8

Also registered as 1 other CAS number

9005-36-1

Concern score

Not assessed — no hazard data yet.

Potassium alginate in plain language

What it is: Also known as Alginic acid potassium salt · Kimica algin k 3 · Potassium salt of alginic acid · Protaweld evr 200 · potassium salt Alginic acid · E-402
Show all 15 names
Ins NO.402 · INS-402 · Kelmar · Kelmar improved · Kimica Algin K · Kimitsu Algin K · Laekmukvbjsqbm-cawkzdfgsa-l · Potassium polyalginate · Stercofuge
What it does: Used in cosmetics as a binder, an emulsion stabiliser and a thickener.
Binding
Emulsion stabilising
Viscosity controlling
Emulsifier
Surfactant
Thickener
Is it a concern?: We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Potassium alginate appears in these published regulatory listings.

Recorded in these product areas

Found in consumer products
Industrial

EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Viscosity modifier, Emulsifier, Binder.
- EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Viscosity modifier, Emulsifier, Binder.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as polymer.
- openFDA substance registry classifies this ingredient as polymer.Source →

Expert safety opinions

No expert opinion on file for Potassium alginate. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Potassium alginate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EPA Chemical and Products Database
exposure · updated February 8, 2019
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
Open →
FDA GSRS UNII
registry · updated 2026-02-26
Open →
openFDA Substance
registry · updated 2026-05-24
Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Open →

Reference links (2)

Openfda substance

fao.org

Read →

Openfda substance

codexalimentarius.net

Read →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often EPA CPDat has listed Potassium alginate in a product composition. These are source records, not Greenveil catalog products.

Named organisations

Typical roles

BindingEmulsion stabilisingViscosity controllingEmulsifierSurfactantThickener

See products using Potassium alginate →