Arsine

CAS 7784-42-1

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

AsH₃77.9 g/mol

no molecular structure to draw

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 manufacturers (2)

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

Nippon Sanso Holdings · JP Japan

Matheson Tri-Gas

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.

Emd Holding

Why It Matters

Sectors

Electronics

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

•Semiconductor and photovoltaic agent in Computer and Electronic Product Manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS7784-42-1

PubChem CID23969

DTXSIDDTXSID3023760

FormulaAsH3

Mol. Weight77.946 g/mol

SMILES[AsH3]

Data Sources

EPA CompTox (DSSTox) · DTXSID3023760Retrieved 2026-04-06
PubChem · compound 23969Retrieved 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

Arsine (CAS 7784-42-1) https://chemicalindependence.com/chemical/7784-42-1/ EPA CompTox (DSSTox): DTXSID3023760. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3023760 PubChem: 23969. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23969 EPA Chemical Data Reporting: 7784-42-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 7784-42-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 285000 for CAS 7784-42-1. Reporting year: 2024. https://usatrade.census.gov/