Naptalam

CAS 132-66-1

US productionNot reported

Import value, 2024$872M

Top sourceSwitzerland 44%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

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 292429 · basket

These shares come from HS customs code 292429, which covers 203 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).

CH 44%SwitzerlandCN 19%ChinaIN 12%IndiaJP 9%JapanIE 6%Ireland

Taiwan
United Kingdom
El Salvador
Colombia
Ukraine
Brazil
Guatemala
Belgium
Netherlands
Turkey
Sweden
Greece
Canada
Israel
New Zealand
Latvia
Lithuania
Finland
Slovakia
Australia
Hong Kong
Czech Republic
Armenia
Poland

Why It Matters

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

Chemical Identity

CAS132-66-1

PubChem CIDNot recorded

DTXSIDDTXSID6032437

FormulaC18H13NO3

Mol. Weight291.306 g/mol

SMILESOC(=O)C1=C(C=CC=C1)C(=O)NC1=CC=CC2=C1C=CC=C2

Data Sources

EPA CompTox (DSSTox) · DTXSID6032437Retrieved 2026-04-29
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Naptalam (CAS 132-66-1) https://chemicalindependence.com/chemical/132-66-1/ EPA CompTox (DSSTox): 132-66-1. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6032437 US Census international trade: HS 292429 for CAS 132-66-1. Reporting year: 2024. https://usatrade.census.gov/