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  1. Ingredients
  2. beauty
  3. Etidronic acid
  • beauty
  • cleaning
  • industrial
  • pharma

Etidronic acid

CAS 2809-21-4 · 70/100 · High conf.

Chelating agent · Corrosion inhibitor · Fragrance

Etidronic acid chemical structure
70

Concern score

70/100High concern based on regulatory listings.
Well researched
Etidronic acid chemical structure

Why it's flagged

(1-Hydroxyethylidene)diphosphonic acid and its salts is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — restricted

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

Restrictions first, then routine listings from published regulatory sources.

  • commercial_presence
  • consumer_product_presence
  • cpdat_category:beauty|cleaning|pharma|industrial
  • currently_marketed_ndc
  • definition_level:complete
  • definition_type:primary
  • eu_annex:III
  • eu_cosmetic_restricted
  • EUEC

    Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: (a) Hair product (b) Soap Maximum concentration: (a) 1.5% (as etidronic acid) (b) 0.2% (as etidronic acid)

    restricted
    View source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 634 composition records across product categories including Furniture and furnishings, Specialty occupational products, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Chelating agent, Fragrance, Oxidizing agent.
    • EPA CPDat observed this chemical in 634 composition records across product categories including Furniture and furnishings, Specialty occupational products, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Chelating agent, Fragrance, Oxidizing agent.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 1 active drug products and 1 total products.
    • FDA NDC lists this ingredient in 1 active drug products and 1 total products.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Evidence

No graded sources yet for Etidronic acid. We publish evidence only once a source is linked and reviewed — this ingredient is in the catalog, but has not been assessed.

Suitability

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

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it appears

Prevalence of Etidronic acid in our catalog (epa_cpdat).

Products

634

Brands

6

Furniture and furnishingsSpecialty occupational productsLaboratory suppliesCleaning and safetyIndustrial productsRaw materials

Typical roles

Chelating agentCorrosion inhibitorFragranceOxidizing agentStabilizing agent
See products using Etidronic acid →

Catalog

Found in these products

186 products
  • UUnilever U
    Dove pamperingUnilever · Cosmetic ProductsHigh
  • DDove D
    Refreshing beauty cream barDoveCritical
  • Ddove,unilever D
    Beauty cream bardove,unilever · SoapHigh
  • LPLe Petit Olivier LP
    Savonnettes extra douces Verveine CitronLe Petit Olivier · HygieneHigh
  • JAJohnson and Johnson JA
    Le petit marseillaisJohnson and JohnsonHigh
  • YRYves Rocher YR
    Monoi Gentle Hair & Body WashYves Rocher · Cosmetic ProductsHigh
  • DDove D
    Beauty Cream BarDoveHigh
  • LPLe Petit Olivier LP
    Savonnettes extra douces Fleur d'orangerLe Petit Olivier · HygieneHigh
  • GGreenveil G
    6281006592407200Minor
  • UDUnilever, Dove UD
    go fresh cucumber & green tea scentUnilever, DoveCritical
  • LPLe petit olivier LP
    2 savonnettes extra doucesLe petit olivierHigh
  • UUnilever U
    DoveUnileverHigh
  • GGreenveil G
    dove sensitiveNon Food ProductsHigh
  • SSimple S
    SoapSimple · ToiletriesMinor
  • CCien C
    CremeseifeCien · HygieneHigh
  • SVSanté Verte SV
    Nature & care permanent colour chocolateSanté Verte · HairCritical
  • GGreenveil G
    Pears Soap 100gCosmetic ProductsCritical
  • YLYardley London YL
    oatmeal & almond soapYardley London · HygieneHigh
  • NNivea N
    Creme care SoapNiveaHigh
  • GGreenveil G
    Dove SoapCritical
  • GGreenveil G
    0827854001126Critical
  • GGreenveil G
    oatmealMinor
  • GGreenveil G
    big ass lump of coal activated charcoal soapMinor
  • WWright’s W
    Cleansing traditional soap with coal tar fragranceWright’sHigh

Co-occurrence

Often appears with

Ingredients that frequently appear alongside Etidronic acid in the catalog.

  • FragranceCo occurs
  • Tetrasodium etidronateCo occurs
  • LinaloolCo occurs
  • (-)-LinaloolCo occurs
  • LinaloolCo occurs
  • Hydrogen peroxideCo occurs
  • Beef peptone (enzymatic; 400 mw)Co occurs
  • Hydrogen peroxideCo occurs
  • Titanium dioxideCo occurs
  • Titanium dioxideCo occurs
  • Cetostearyl alcoholCo occurs
  • Alcohols, C14-18Co occurs