Ammonium magnesium phosphate ((NH4)Mg(PO4))

CAS 7785-21-9

Used in 1 industrial sector tracked by the EPA.

Molecular structure of 7785-21-9 — 1 NH₄⁺ · 1 Mg²⁺

US production6.8M lb

Import volumeZero

Import dependency0%

Top sourceNo public record

Production is reported production, not a complete census of factories. 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 284290 · basket

EPA reports by year

2023: US production 6.8M lb · Imports Zero
2019: US production Zero · Imports 75.3M lb

HS customs code 284290 covers 96 tracked chemicals in total. US Census does not break out this chemical's share, so the country-of-origin mix is not available. EPA CDR reports import dependency at the chemical level separately, shown above.

EPA-registered manufacturers (1)

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

Carbo Ceramics

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.

Koch Industries

Why It Matters

Sectors

Agriculture

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

•Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and HuntingNot Known or Reasonably Ascertainable

Vendor Pricing

$2.66/gA2B Chem LLC

CountryUnited States

Pack$133.00 / 50 g

Purity98%

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$2.82	50 g	98%
Angene Chemical	China → Hong Kong	$2.86	50 g	98%
AA BLOCKS	United States	$3.44	50 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS7785-21-9

PubChem CID178727

DTXSIDDTXSID00872567

FormulaH4MgNO4P

Mol. Weight137.32 g/mol

SMILES[NH4+].[O-]P(=O)([O-])[O-].[Mg+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID00872567Retrieved 2026-04-06
PubChem · compound 178727Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

← Back to Dashboard ← Back to Agriculture

Brief citations

Ammonium magnesium phosphate ((NH4)Mg(PO4)) (CAS 7785-21-9) https://chemicalindependence.com/chemical/7785-21-9/ EPA CompTox (DSSTox): DTXSID00872567. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID00872567 PubChem: 178727. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/178727 EPA Chemical Data Reporting: 7785-21-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7785-21-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting