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2-Ethylhexyl acid phosphate

CAS 12645-31-7

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

Molecular structure of 12645-31-7
US productionCBI
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
CN 66%ChinaDE 18%GermanyJP 5%JapanIN 3%IndiaCH 3%Switzerland
EPA-registered manufacturers (5)
Italmatch Chemicals Spa · IT Italy
Ascent Chemicals
Syntha Group
The Detrex
Zschimmer&Schwarz
Domestic parents -- activity not disclosed (1)
Kao America
EPA-registered importers (1)
Lanxess

Why It Matters

Sectors
AgricultureEnergyConstructionMetals & MiningTextilesPaints & CoatingsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 9 sectors as 6 functional roles.

  • •Corrosion inhibitor in Fabricated Metal Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Surfactant (surface active agent) in Textiles, apparel, and leather manufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Anti-stain agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Solvent in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Surfactant (surface active agent) in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Emulsifier in Construction (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Surfactant (surface active agent) in Oil and Gas Drilling, Extraction, and Support activities (9%)Processing—incorporation into formulation, mixture, or reaction product
  • •Corrosion inhibitor in Petroleum Lubricating Oil and Grease Manufacturing (32%)Processing—incorporation into formulation, mixture, or reaction product
  • •Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (3%)Not Known or Reasonably Ascertainable
  • •Emulsifier in Asphalt Paving, Roofing, and Coating Materials ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS12645-31-7
PubChem CID83024
DTXSIDDTXSID3027740
FormulaC8H21O5P
Mol. Weight228.22 g/mol
SMILESCCCCC(CC)CO.OP(=O)(O)O

Data Sources

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Brief citations

2-Ethylhexyl acid phosphate (CAS 12645-31-7) https://chemicalindependence.com/chemical/12645-31-7/ EPA CompTox (DSSTox): DTXSID3027740. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3027740 PubChem: 83024. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/83024 EPA Chemical Data Reporting: 12645-31-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 12645-31-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291990 for CAS 12645-31-7. Reporting year: 2024. https://usatrade.census.gov/