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QUATERNIUM-73

CAS 37187-89-6

Also registered as 1 other CAS number

15763-48-1

QUATERNIUM-73 chemical structure

Concern score

Not assessed — no hazard data yet.

QUATERNIUM-73 in plain language

What it is

Also known as Kankohso 201 · Pionin · 4,4'-DIMETHYL-3,3'-DIHEPTYL-2,2'-THIAZOLOCYANINE iodide · 4,4′-Dimethyl-3,3′-diheptyl-2,2′-thiazolocyanine iodide · NK-266 · Photosensitizer 201

What it does

Used in cosmetics as an antistatic agent.

  • Antistatic
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. QUATERNIUM-73 appears in these published regulatory listings.

  • In marketed US drugs

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Anti-static agent.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Anti-static 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 →

Expert safety opinions

No expert opinion on file for QUATERNIUM-73. 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 QUATERNIUM-73 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 2019-12-20

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA National Drug Code Directory

    regulatory · updated 2026-12-31

    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 FDA National Drug Code directory has listed QUATERNIUM-73 in a product composition. These are source records, not Greenveil catalog products.

Source records

1

Typical roles

Antistatic
See products using QUATERNIUM-73 →

Catalog

Found in these products

Cosmetic and personal-care products that list QUATERNIUM-73 are shown first. Their ingredient lists include QUATERNIUM-73; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 1 →Find products without it →