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Tetrasodium etidronate

CAS 29329-71-3

Also registered as 4 other CAS numbers

104365-97-1 · 146437-16-3 · 863638-08-8 · 3794-83-0

Tetrasodium etidronate chemical structure

Concern score

Not assessed — no hazard data yet.

Tetrasodium etidronate in plain language

What it is

Also known as Etidronate tetrasodium · Phosphonic acid, (1-HYDROXYETHYLIDENE)BIS-, tetrasodium salt · Tetrasodium (1-hydroxyethane-1,1-diyl)bis(phosphonate) · tetrasodium;1,1-diphosphonatoethanol · (1-HYDROXYETHYLIDENE)BIS-, tetrasodium salt · (1-Hydroxyethylidene)bisphosphonic acid tetrasodium salt

Show all 26 names

(1-Hydroxyethylidene)diphosphonate de tetrasodium · (1-Hydroxyethylidene)diphosphonic acid, tetrasodium salt · (1-hidroxietiliden)bisfosfonato de tetrasodio · (1-hydroxyethylidene)bisphosphonate de tetrasodium · (Hydroxyethylidene)diphosphonic acid tetrasodium salt · 1-Hydroxyethane-1,1-diphosphonic acid tetrasodium salt · 1-Hydroxyethylidene-1,1-diphosphonic acid tetrasodium salt · Diphosphonic acid, (1-HYDROXYETHYLIDENE)-, tetrasodium salt · Defloc EN 43 · Dequest 2016 · Ec 223-267-7 · Ethane-1-hydroxy-1,1-diphosphonic acid, tetrasodium salt · Sequion 10Na4 · Tarpinel 4NL · Tetrasodium (1-hydroxyethylidene)bisphosphonate · Tetrasodium 1-hydroxyethane-1, 1-diphosphonate · Tetrasodium 1-hydroxyethylidene-1,1-diphosphonate · Turpinal 4NL · UNII-CZZ9T1T1X4 · hydroxy alkyl diphosphonate, tetra sodium salt

What it does

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

  • Chelating
  • Emulsion stabilising
  • Viscosity controlling
  • Emulsifier
  • Chelating agent
  • 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. Tetrasodium etidronate appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Industrial
  • EUCosIngActiveRestriction: III/53
  • USEPAcommercial use observedEPA CPDat observed this chemical in 447 composition records across product categories including Construction and building materials, Cleaning products and household care, Personal care. EPA CPDat classifies this chemical for functional uses including Chelating agent, Viscosity modifier, Emulsifier.
    • EPA CPDat observed this chemical in 447 composition records across product categories including Construction and building materials, Cleaning products and household care, Personal care. EPA CPDat classifies this chemical for functional uses including Chelating agent, Viscosity modifier, Emulsifier.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Tetrasodium etidronate. 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 Tetrasodium etidronate 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 September 2013

    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 →

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 Tetrasodium etidronate in a product composition. These are source records, not Greenveil catalog products.

Source records

447

Named organisations

6

Construction and building materialsCleaning products and household carePersonal careCleaning and safety

Typical roles

ChelatingEmulsion stabilisingViscosity controllingEmulsifierChelating agentThickener
See products using Tetrasodium etidronate →

Catalog

Found in these products

Their ingredient lists include Tetrasodium etidronate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

Co-occurrence

Often appears with

Ingredients that frequently appear alongside Tetrasodium etidronate in the catalog.