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Ethoxylated trimethylolpropane

CAS 50586-59-9

Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1)

Molecular structure of 50586-59-9
US productionNot reported
Import value, 2024$6.1B
Top sourceJapan 32%

EPA exempts this chemical from its production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 382499 · basket

These shares come from HS customs code 382499, which covers 206 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
JP 32%JapanKR 27%South KoreaDE 8%GermanyCA 6%CanadaCN 4%China

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS50586-59-9
PubChem CIDNot recorded
DTXSIDDTXSID50894411
Formula(C2H4O)n(C2H4O)n(C2H4O)nC6H14O3
Mol. WeightNot recorded
SMILESCCC(COCCO)(COCCO)COCCO |lp:4:2,7:2,9:2,12:2,14:2,17:2,Sg:n:11,10,9::ht,Sg:n:4,5,6::ht,Sg:n:14,15,16::ht|

Data Sources

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Brief citations

Ethoxylated trimethylolpropane (CAS 50586-59-9) https://chemicalindependence.com/chemical/50586-59-9/ EPA TSCA Inventory: CAS 50586-59-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 382499 for CAS 50586-59-9. Reporting year: 2024. https://usatrade.census.gov/