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Triethylene glycol

CAS 103734-98-1

Also registered as 10 other CAS numbers

119438-10-7 · 122784-99-0 · 137800-98-7 · 145112-98-7 · 676-18-6 · 118662-30-9 · 121202-29-7 · 939972-01-7 · 1629855-96-4 · 112-27-6

Triethylene glycol chemical structure

Concern score

Not assessed — no hazard data yet.

Triethylene glycol in plain language

What it is

Also known as Macrogol 150 · PEG-3 · Polyethylene glycol (3) · Polyethylene glycol 150 · 1,2-Bis(2-hydroxyethoxy)ethane · 1,2-Di(β-hydroxyethoxy)ethane

Show all 32 names

1,8-Dihydroxy-3,6-dioxaoctane · 2,2'-(1,2-ETHANEDIYLBIS(OXY))BISETHANOL · 2,2'-(1,2-Ethanediyl bis (oxy))-bisethanol · 2,2'-(Ethane-1,2-diylbis(oxy))diethanol · 2,2'-(Ethylendioxy)diethanol · 2,2'-(Ethylenedioxy)diethanol · 2,2'-(etilendioxi)dietanol · 2,2'-ETHYLENEDIOXYBIS(ETHANOL) · 2,2'-Ethylenedioxydiethanol · 2,2'-Ethylenedioxyethanol · 3,6-Dioxaoctane-1,8-diol · Bis(2-hydroxyethoxyethane) · Di-beta-hydroxyethoxyethane · Ethanol, 2,2'-(ethylenedioxy)di- · Ethylene glycol dihydroxydiethyl ether · Glycol bis(hydroxyethyl) ether · Triethyleneglycol · Triethylenglykol · Trigen · Triglycol · Trigol · triethylene glycol (15-20%) · triethylene glycol (cas # 112-27-6) · triethylene glycol (cas #112-27-6) (18-23%) · triethylene glycol (wt % range:20-25%) · triethylene glycol(18-23 wt%)

What it does

Used in cosmetics as a thickener and a fragrance ingredient.

  • Viscosity controlling
  • Perfuming
  • Fragrance
  • Colourant
  • Thickener
  • Solvent
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. Triethylene glycol appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Pharma
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 295 composition records across product categories including Cleaning and safety, Specialty occupational products, Electronics/small appliances. EPA CPDat classifies this chemical for functional uses including Fragrance, Deodorizer, Viscosity modifier.
    • EPA CPDat observed this chemical in 295 composition records across product categories including Cleaning and safety, Specialty occupational products, Electronics/small appliances. EPA CPDat classifies this chemical for functional uses including Fragrance, Deodorizer, Viscosity modifier.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 Triethylene glycol. 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 Triethylene glycol 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 jan 24 1989

    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

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

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

Source records

295

Named organisations

6

Cleaning and safetySpecialty occupational productsElectronics/small appliancesVehicleLaboratory suppliesBatteries

Typical roles

Viscosity controllingPerfumingFragranceColourantThickenerSolvent
See products using Triethylene glycol →

Catalog

Found in these products

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

See all 121 →Find products without it →