Hexadecyl dihydrogen phosphate

CAS 3539-43-3

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 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. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Zero

EPA-registered manufacturers (4)

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

Basf Se · DE Germany

Basf

Catexel Nease

Colonial Chemical

Why It Matters

Sectors

Metals & MiningConsumer Products

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.

•Emulsifier in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Surfactant (surface active agent) in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Lubricating agent in Fabricated Metal Product ManufacturingUse—non-incorporative activities

Vendor Pricing

$0.62/gA2B Chem LLC (2 weeks)

CountryUnited States

Pack$62.00 / 100 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
AA BLOCKS (2 weeks)	United States	$0.68	100 g	—
Combi-Blocks, Inc.	United States	$1.10	500 g	95%
Aaron Chemicals LLC	Hong Kong	$16.36	25 g	95%
Angene Chemical	China → Hong Kong	$16.52	25 g	95%
AstaTech (2 weeks)	United States	$16.96	25 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS3539-43-3

PubChem CID19059

DTXSIDDTXSID1045039

FormulaC16H35O4P

Mol. Weight322.42 g/mol

SMILESCCCCCCCCCCCCCCCCOP(=O)(O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID1045039Retrieved 2026-04-06
PubChem · compound 19059Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

Hexadecyl dihydrogen phosphate (CAS 3539-43-3) https://chemicalindependence.com/chemical/3539-43-3/ EPA CompTox (DSSTox): DTXSID1045039. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1045039 PubChem: 19059. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/19059 EPA Chemical Data Reporting: 3539-43-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3539-43-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting