Didecyl phthalate

CAS 84-77-5

1,2-Benzenedicarboxylic acid, 1,2-didecyl ester

Molecular structure of 84-77-5
US productionNot reported
Import value, 2024$83M
Top sourceGermany 68%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 291733 · narrow

These shares come from HS customs code 291733, which covers 5 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
DE 68%GermanyKR 13%South KoreaSE 8%SwedenTW 7%TaiwanCA 3%Canada

Why It Matters

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

Vendor Pricing

$0.46/gCombi-Blocks, Inc.
CountryUnited States
Pack$230.00 / 500 g
Purity95%
Vendors17 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

Chemical Identity

CAS84-77-5
PubChem CIDNot recorded
DTXSIDDTXSID3026512
FormulaC28H46O4
Mol. Weight446.672 g/mol
SMILESCCCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCCC

Data Sources

Brief citations

Didecyl phthalate (CAS 84-77-5) https://chemicalindependence.com/chemical/84-77-5/ EPA TSCA Inventory: CAS 84-77-5. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 291733 for CAS 84-77-5. Reporting year: 2024. https://usatrade.census.gov/