Phenol, 4-nonyl-, phosphite (3:1)

CAS 3050-88-2

U.S. production volumes are classified as confidential business information.

US productionCBI

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

Top sourceNo public record

At least one company claimed its 2019 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. US production volume is confidential. Production reporting year: 2019.

Where It Comes From

EPA reports by year

2019: US production Confidential · Imports Confidential

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.

Si Group Usa (Usaa)

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.

Frp Services & Co. (America)

Why It Matters

Sectors

Plastics & Rubber

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

Industrial Uses

Used in 2 sectors as 3 functional roles.

•UV stabilizer in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
•Chemical reaction regulator in Plastics Material and Resin Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
•Antioxidant in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
•UV stabilizer in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
•Chemical reaction regulator in Synthetic Rubber Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
•Antioxidant in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.27/gAaron Chemicals LLC

CountryHong Kong

Pack$136.00 / 500 g

Purity95%

Vendors7 available

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

6 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.30	500 g	95%
A2B Chem LLC	United States	$0.38	500 g	98%
Combi-Blocks, Inc.	United States	$0.38	500 g	98%
AA BLOCKS	United States	$0.44	100 g	97%
AstaTech (2 weeks)	United States	$48.00	1 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS3050-88-2

PubChem CID76452

DTXSIDDTXSID60872866

FormulaC45H69O3P

Mol. Weight689 g/mol

SMILESCCCCCCCCCC1=CC=C(C=C1)OP(OC2=CC=C(C=C2)CCCCCCCCC)OC3=CC=C(C=C3)CCCCCCCCC

Data Sources

EPA CompTox (DSSTox) · DTXSID60872866Retrieved 2026-04-06
PubChem · compound 76452Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04

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Brief citations

Phenol, 4-nonyl-, phosphite (3:1) (CAS 3050-88-2) https://chemicalindependence.com/chemical/3050-88-2/ EPA CompTox (DSSTox): DTXSID60872866. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID60872866 PubChem: 76452. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/76452 EPA Chemical Data Reporting: 3050-88-2. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3050-88-2. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting

Phenol, 4-​nonyl-​, phosphite (3:1)