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Urea, sulfate (1:1)

CAS 21351-39-3

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

Molecular structure of 21351-39-3
US productionCBI
Import value, 2024$371M
Top sourceChina 27%

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 292419 · basket

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

These shares come from HS customs code 292419, which covers 211 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 27%ChinaIN 18%IndiaDE 14%GermanyIT 10%ItalyGB 6%United Kingdom
EPA-registered manufacturers (7)
Ecolab
Harcros Chemicals
Hydrite Chemical
Innovative Chemical Technologies
Nutrien Ag Solutions
Show all 7
Nutrien Us Top
Wilbur-Ellis Holdings Ii

Why It Matters

Sectors
AgricultureConstructionMetals & MiningTextilesConsumer ProductsPaper & Printing
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 7 sectors as 7 functional roles.

  • •Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing—repackaging
  • •Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and Hunting (100%)Processing—repackaging
  • •Ion exchange agent in Agriculture, Forestry, Fishing and Hunting (50%)Processing—repackaging
  • •Anti-scaling agent in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Cleaning agent in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Cleaning agent in Paper Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product
  • •pH regulating agent in Agriculture, Forestry, Fishing and HuntingProcessing—incorporation into formulation, mixture, or reaction product
  • •Cleaning agent in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing)Processing—incorporation into formulation, mixture, or reaction product
  • •Tanning agents not otherwise specified in Textiles, apparel, and leather manufacturingUse—non-incorporative activities
  • •Brightener in Fabricated Metal Product ManufacturingUse—non-incorporative activities

Chemical Identity

CAS21351-39-3
PubChem CID159909
DTXSIDDTXSID4027816
FormulaCH6N2O5S
Mol. Weight158.14 g/mol
SMILESC(=O)(N)N.OS(=O)(=O)O

Data Sources

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Brief citations

Urea, sulfate (1:1) (CAS 21351-39-3) https://chemicalindependence.com/chemical/21351-39-3/ EPA CompTox (DSSTox): DTXSID4027816. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4027816 PubChem: 159909. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/159909 EPA Chemical Data Reporting: 21351-39-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 21351-39-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292419 for CAS 21351-39-3. Reporting year: 2024. https://usatrade.census.gov/