Silicon nitride (Si3N4)

Drug ingredient

CAS 12033-89-5

This drug ingredient has classified U.S. production volumes. EPA withholds the number as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$31M

Top sourceChina 29%

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 285000 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 285000, which covers 58 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 29%ChinaDE 29%GermanyJP 22%JapanTW 3%TaiwanIN 2%India

Canada
Russia
Slovenia
Hong Kong
Switzerland
Lithuania
Czech Republic
Spain
Israel
Australia

EPA-registered importers (4)

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

Kyocera · JP Japan

Ube · JP Japan

Kyocera International

Ube America

Why It Matters

Sectors

HealthConstructionMetals & Mining

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•Silicium Nitricatum

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

•Abrasives in Fabricated Metal Product Manufacturing (100%)Use—non-incorporative activities

Chemical Identity

CAS12033-89-5

PubChem CID3084099

DTXSIDDTXSID20892247

FormulaN4Si3

Mol. Weight140.28 g/mol

SMILESN12[Si]34N5[Si]16N3[Si]25N46

Data Sources

EPA CompTox (DSSTox) · DTXSID20892247Retrieved 2026-04-06
PubChem · compound 3084099Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Silicon nitride (Si3N4) (CAS 12033-89-5) https://chemicalindependence.com/chemical/12033-89-5/ EPA CompTox (DSSTox): DTXSID20892247. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID20892247 PubChem: 3084099. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/3084099 EPA Chemical Data Reporting: 12033-89-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 12033-89-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 285000 for CAS 12033-89-5. Reporting year: 2024. https://usatrade.census.gov/