Indium tin oxide (In1.69Sn0.15O2.85)

CAS 71243-84-0

US productionNot reported

Import value, 2024$73M

Top sourceSouth Korea 47%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 284190 · basket

These shares come from HS customs code 284190, which covers 57 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).

KR 47%South KoreaJP 16%JapanCA 11%CanadaBE 4%BelgiumGB 4%United Kingdom

Mexico
Croatia
Italy
India
Austria
Turkey
Hong Kong
Denmark
Czech Republic
Ireland

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS71243-84-0

PubChem CIDNot recorded

DTXSIDDTXSID10904045

FormulaIn2O5Sn

Mol. Weight428.341 g/mol

SMILESO=[Sn]=O.O=[In]O[In]=O

Data Sources

EPA TSCA InventoryRetrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Indium tin oxide (In1.69Sn0.15O2.85) (CAS 71243-84-0) https://chemicalindependence.com/chemical/71243-84-0/ EPA TSCA Inventory: CAS 71243-84-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 284190 for CAS 71243-84-0. Reporting year: 2024. https://usatrade.census.gov/