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Diammonium hydrogen phosphite

CAS 22132-71-4

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

Molecular structure of 22132-71-4
2 NH₄⁺
US productionCBI
Import value, 2024$19M
Import volumeZero
Top sourceChina 86%

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 283510 · basket

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

These shares come from HS customs code 283510, which covers 15 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 86%ChinaCH 6%SwitzerlandIN 4%IndiaGB 3%United KingdomDE 1%Germany
Domestic parents -- activity not disclosed (1)
Lanxess

Why It Matters

Sectors
AgricultureMetals & MiningPaper & Printing
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS22132-71-4
PubChem CID17888506
DTXSIDDTXSID70889682
FormulaH8N2O3P+
Mol. Weight115.05 g/mol
SMILES[NH4+].[NH4+].[O-][P+](=O)[O-]

Data Sources

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Brief citations

Diammonium hydrogen phosphite (CAS 22132-71-4) https://chemicalindependence.com/chemical/22132-71-4/ EPA CompTox (DSSTox): DTXSID70889682. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID70889682 PubChem: 17888506. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/17888506 EPA Chemical Data Reporting: 22132-71-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 22132-71-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283510 for CAS 22132-71-4. Reporting year: 2024. https://usatrade.census.gov/