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  • industrial

Isooctyl phenyl phosphite

CAS 26401-27-4

Also registered as 1 other CAS number

25360-19-4

Concern score

Not assessed — no hazard data yet.

Isooctyl phenyl phosphite in plain language

What it is

Also known as ADK Stab C · Advastab CH 90 · Diphenyl Isooctyl Phosphite · Lankromark LE 98 · Mark C · Phosphorous acid, isooctyl diphenyl ester

Show all 8 names

isooctyl diphenyl phosphite · diphenyl phosphite sooctyl alcohol

What it does

Used in consumer products as an antioxidant and a stabiliser.

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

Regulation

No restrictions found. Isooctyl phenyl 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 Stabilizing agent, Heat stabilizer, Antioxidant.
    • 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 Stabilizing agent, Heat stabilizer, Antioxidant.Source →

Evidence & sources

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

2 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated january 12, 2017

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    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 Isooctyl phenyl 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

AntioxidantStabiliser
See products using Isooctyl phenyl phosphite →