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GREENVEIL

  • industrial

Disodium phosphite

CAS 13708-85-5

Also registered as 3 other CAS numbers

16926-95-7 · 130184-07-5 · 448193-21-3

Concern score

Not assessed — no hazard data yet.

Disodium phosphite in plain language

What it is

Also known as Sodium phosphite · Disodium phosphonate · Phosphonic acid sodium salt (1:2) · Disodium hydrogen phosphite · Disodium monohydrogen phosphite · Disodium orthophosphite

Show all 11 names

disodium salt Phosphonic acid · Sodium phosphite (Na2HPO3) · Sodium phosphite (Na2PHO3) · phosphonic acid, sodium salt (1:2) · sodium salt (phosphonate)

What it does

Used in consumer products as a chelating agent.

  • Chelating agent
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Disodium phosphite appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • USEPAcommercial use observedEPA CPDat observed this chemical in 1 composition records across product categories including Construction and building materials. EPA CPDat classifies this chemical for functional uses including Chelating agent.
    • EPA CPDat observed this chemical in 1 composition records across product categories including Construction and building materials. EPA CPDat classifies this chemical for functional uses including Chelating agent.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Evidence & sources

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

4 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated Mar-19

    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 →

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 Disodium phosphite in a product composition. These are source records, not Greenveil catalog products.

Source records

1

Named organisations

4

Construction and building materials

Typical roles

Chelating agent
See products using Disodium phosphite →