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2-Phosphono-1,2,4-butanetricarboxylic acid

CAS 37971-36-1

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

Molecular structure of 37971-36-1
US productionCBI
Import value, 2024$598M
Top sourceChina 89%

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 293149 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293149, which covers 114 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 89%ChinaIN 4%IndiaCA 3%CanadaDE 2%GermanyAR 1%Argentina
EPA-registered manufacturers (1)
Nalco- An Ecolab
Domestic parents -- activity not disclosed (6)
Brenntag
Chemtreat
Ecolab
Italmatch Usa
Valudor Products
Show all 6
Wego Chemical Group
EPA-registered importers (6)
Cci Holding · JP Japan
Cci Manufacturing Il
Connect Chemicals Usa
Lanxess
Special Materials
Show all 6
Zschimmer&Schwarz

Why It Matters

Sectors
FoodEnergyWaterTransportationMetals & MiningPlastics & RubberConsumer ProductsPaper & PrintingCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 14 sectors as 4 functional roles.

  • •Corrosion inhibitor in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Anti-scaling agent in All Other Chemical Product and Preparation Manufacturing (50%)Use—non-incorporative activities
  • •Corrosion inhibitor in Paper Manufacturing (5%)Use—non-incorporative activities
  • •Corrosion inhibitor in Services (15%)Use—non-incorporative activities
  • •Corrosion inhibitor in Transportation Equipment Manufacturing (6%)Use—non-incorporative activities
  • •Corrosion inhibitor in Utilities (1%)Use—non-incorporative activities
  • •Corrosion inhibitor in Primary Metal Manufacturing (1%)Use—non-incorporative activities
  • •Corrosion inhibitor in Food, beverage, and tobacco product manufacturing (16%)Use—non-incorporative activities
  • •Corrosion inhibitor in Miscellaneous Manufacturing (6%)Use—non-incorporative activities
  • •Chelating agent in All Other Chemical Product and Preparation Manufacturing (16%)Processing—incorporation into formulation, mixture, or reaction product
  • •Anti-scaling agent in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (49%)Processing—incorporation into formulation, mixture, or reaction product
  • •Chelating agent in Primary Metal Manufacturing (33%)Processing—incorporation into formulation, mixture, or reaction product
  • •Anti-scaling agent in Utilities (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Anti-scaling agent in Oil and Gas Drilling, Extraction, and Support activities (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Anti-scaling agent in All Other Basic Organic Chemical Manufacturing (42%)Use—non-incorporative activities
  • •Anti-scaling agent in Mining (except Oil and Gas) and support activities (6%)Use—non-incorporative activities
  • •Anti-scaling agent in Primary Metal Manufacturing (2%)Use—non-incorporative activities
  • •Anti-scaling agent in Petroleum Refineries (8%)Use—non-incorporative activities
  • •Anti-scaling agent in Paper Manufacturing (5%)Use—non-incorporative activities
  • •Anti-scaling agent in Transportation Equipment Manufacturing (8%)Use—non-incorporative activities
  • •Anti-scaling agent in Food, beverage, and tobacco product manufacturing (25%)Use—non-incorporative activities
  • •Anti-scaling agent in Services (18%)Use—non-incorporative activities
  • •Corrosion inhibitor in Mining (except Oil and Gas) and support activities (4%)Use—non-incorporative activities
  • •Corrosion inhibitor in Plastics Product Manufacturing (3%)Use—non-incorporative activities
  • •Corrosion inhibitor in Petroleum Refineries (7%)Use—non-incorporative activities
  • •Anti-adhesive/cohesive in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS37971-36-1
PubChem CID61973
DTXSIDDTXSID4027999
FormulaC7H11O9P
Mol. Weight270.13 g/mol
SMILESC(CC(CC(=O)O)(C(=O)O)P(=O)(O)O)C(=O)O

Data Sources

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Brief citations

2-Phosphono-1,2,4-butanetricarboxylic acid (CAS 37971-36-1) https://chemicalindependence.com/chemical/37971-36-1/ EPA CompTox (DSSTox): DTXSID4027999. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4027999 PubChem: 61973. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/61973 EPA Chemical Data Reporting: 37971-36-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 37971-36-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293149 for CAS 37971-36-1. Reporting year: 2024. https://usatrade.census.gov/