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Pentasodium triphosphate

CAS 9010-08-6 · 0/100 · High conf.

Also registered as 8 other CAS numbers

187620-23-1 · 860389-18-0 · 1350716-07-2 · 1610338-39-0 · 2093160-08-6 · 2247930-54-5 · 2640487-48-3 · 7758-29-4

Pentasodium triphosphate chemical structure

Concern score

0/100Low concern — well-established and permitted without restriction (FDA GRAS; CIR safe when formulated as directed; EU CosIng).
High confidence

Pentasodium triphosphate in plain language

What it is

Also known as Sodium tripolyphosphate · Pentasodium tripolyphosphate · Sodium tripolyphosphate anhydrous · Pentasodium salt triphosphoric acid · Armofos · Pentasodium triphosphate (Na5P3O10)

Show all 24 names

Pentasodium tripolyphosphate (Na5P3O10) · Polypray STPP · Rhodiaphos C 90S Blue TX · Rhodiaphos LV · S 400 · Unspecified sodium tripolyphosphate · Stpp · Sodium phosphate (Na5P3O10) · Sodium triphosphate (Na5P3O10) · Thermphos · Thermphos L 50 · Thermphos N · Thermphos SPR · Triphosphoric acid, sodium salt (1:5 · Wandetto B · sodium triphosphate · sodium tripolyphosphate (cercla) · sodium tripolyphosphate (stpp)

What it does

Used in cosmetics as a pH buffer and a chelating agent.

  • Buffering
  • Chelating
  • Texturizer, thickener, sequestrant
  • Surfactant
  • Chelating agent
  • pH adjuster
Is it a concern?
Low concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

Why it's flagged

EPA CPDat observed this chemical in 473 composition records across product categories including Construction and building materials, Cleaning and safety, Cleaning products and household care.

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

No restrictions found. Pentasodium triphosphate appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Cleaning
  • Industrial
  • GLOBALJECFAEvaluated2 entries
    • JECFA evaluation record. Functional class: texturizer, thickener, sequestrant.Source →
    • JECFA evaluation record.Source →
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 473 composition records across product categories including Construction and building materials, Cleaning and safety, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Chelating agent, pH regulating agent, Binder.
    • EPA CPDat observed this chemical in 473 composition records across product categories including Construction and building materials, Cleaning and safety, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Chelating agent, pH regulating agent, Binder.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • 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.

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    • JECFA evaluation record. Functional class: texturizer, thickener, sequestrant.

      Year not recorded · GLOBAL JECFA listing · Read the source →

    • JECFA evaluation record.

      Year not recorded · GLOBAL JECFA listing · Read the source →

Evidence & sources

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

7 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated august 6, 2012

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • WHO JECFA Database

    regulatory · updated 2026-10-04

    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.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

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

Source records

473

Named organisations

6

Construction and building materialsCleaning and safetyCleaning products and household careSpecialty occupational productsLaboratory suppliesHome maintenance

Typical roles

BufferingChelatingTexturizer, thickener, sequestrantSurfactantChelating agentpH adjuster
See products using Pentasodium triphosphate →

Catalog

Found in these products

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

See all 88 →Find products without it →