12H-Dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,8,10-tetrakis(1,1-dimethylethyl)-6-hydroxy-, 6-oxide, sodium salt

CAS 85209-91-2

Used in 2 industrial sectors tracked by the EPA.

Molecular structure of 85209-91-2 — 1 Na⁺

US production1.2M lb

Import value, 2024$123M

Import volumeCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Top sourceChina 66%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291990 · basket

EPA reports by year

2023: US production 1.2M lb · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 291990, which covers 77 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 66%ChinaDE 18%GermanyJP 5%JapanIN 3%IndiaCH 3%Switzerland

Poland
Canada
Taiwan
Belgium
Netherlands
Malaysia
Austria
Spain
Ireland
Mexico
South Korea
Turkey
Czech Republic
Hong Kong

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Amfine Chemical

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Milliken &

EPA-registered importers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Mitsubishi International Polymertrade

Why It Matters

Sectors

Plastics & RubberCore Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Vendor Pricing

$2.67/gAmbeed, Inc.

CountryUnited States

Pack$267.00 / 100 g

Purity98%

Vendors6 available

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

5 more vendors

Vendor	Country	$/g	Pack	Purity
Combi-Blocks, Inc.	United States	$2.68	25 g	98%
Synthonix	United States	$3.70	10 g	95%
AK Scientific Specialized	United States	$4.20	5 g	95%
AK Scientific, Inc.	United States	$11.60	5 g	98%
AstaTech (2 weeks)	United States	$52.84	25 g	99%

Chemical Identity

CAS85209-91-2

PubChem CID23674278

DTXSIDDTXSID2072914

FormulaC29H42NaO4P

Mol. Weight508.6 g/mol

SMILESCC(C)(C)C1=CC2=C(C(=C1)C(C)(C)C)OP(=O)(OC3=C(C2)C=C(C=C3C(C)(C)C)C(C)(C)C)[O-].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID2072914Retrieved 2026-04-06
PubChem · compound 23674278Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

12H-Dibenzo[d,g][1,3,2]dioxaphosphocin, 2,4,8,10-tetrakis(1,1-dimethylethyl)-6-hydroxy-, 6-oxide, sodium salt (CAS 85209-91-2) https://chemicalindependence.com/chemical/85209-91-2/ EPA CompTox (DSSTox): DTXSID2072914. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2072914 PubChem: 23674278. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23674278 EPA Chemical Data Reporting: 85209-91-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 85209-91-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291990 for CAS 85209-91-2. Reporting year: 2024. https://usatrade.census.gov/