Mono-n-butylphosphoric acid

CAS 1623-15-0

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.

Import value, 2024$123M

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. US production volume is confidential. 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 Confidential · 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 (2)

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

Aceto Us

Innovative Chemical Technologies

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.

Lanxess

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.

The Sherwin Williams

Why It Matters

Sectors

ConstructionTextilesConsumer ProductsPaints & CoatingsCore 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

Industrial Uses

Used in 6 sectors as 5 functional roles.

•Surfactant (surface active agent) in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Surface modifier in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant
•Chemical reaction regulator in Wood Product ManufacturingProcessing—incorporation into article
•Polymerization promoter in Wood Product ManufacturingProcessing—incorporation into article
•Chemical reaction regulator in Furniture and Related Product ManufacturingProcessing—incorporation into article
•Polymerization promoter in Furniture and Related Product ManufacturingProcessing—incorporation into article
•Wrinkle resisting agent in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into article
•Wrinkle resisting agent in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.09/gALFA AESAR

CountryGermany

Pack$90.72 / 1 kg

PurityNot recorded

Vendors3 available

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

2 more vendors

Vendor	Country	$/g	Pack	Purity
Combi-Blocks, Inc.	United States	$0.25	1 kg	95%
MedChemExpress MCE	Sweden	$1848.88	1 g	—

Chemical Identity

CAS1623-15-0

PubChem CID15389

DTXSIDDTXSID30862719

FormulaC4H11O4P

Mol. Weight154.1 g/mol

SMILESCCCCOP(=O)(O)O

Data Sources

EPA CompTox (DSSTox) · DTXSID30862719Retrieved 2026-04-06
PubChem · compound 15389Retrieved 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

Mono-n-butylphosphoric acid (CAS 1623-15-0) https://chemicalindependence.com/chemical/1623-15-0/ EPA CompTox (DSSTox): DTXSID30862719. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID30862719 PubChem: 15389. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/15389 EPA Chemical Data Reporting: 1623-15-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1623-15-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291990 for CAS 1623-15-0. Reporting year: 2024. https://usatrade.census.gov/