Z-Tetrachlorvinphos

CAS 22248-79-9

US productionNot reported

Import value, 2024$123M

Top sourceChina 66%

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 291990 · basket

These shares come from HS customs code 291990, which covers 77 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 66%ChinaDE 18%GermanyJP 5%JapanIN 3%IndiaCH 3%Switzerland

Poland
Canada
Taiwan
Belgium
Netherlands
Malaysia
Austria
Spain
Ireland
Mexico
South Korea
Turkey
Czech Republic
Hong Kong

Why It Matters

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

Chemical Identity

CAS22248-79-9

PubChem CIDNot recorded

DTXSIDDTXSID1032648

FormulaC10H9Cl4O4P

Mol. Weight365.95 g/mol

SMILESCOP(=O)(OC)O\C(=C/Cl)C1=C(Cl)C=C(Cl)C(Cl)=C1

Data Sources

EPA CompTox (DSSTox) · DTXSID1032648Retrieved 2026-04-29
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Z-Tetrachlorvinphos (CAS 22248-79-9) https://chemicalindependence.com/chemical/22248-79-9/ EPA CompTox (DSSTox): 22248-79-9. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1032648 US Census international trade: HS 291990 for CAS 22248-79-9. Reporting year: 2024. https://usatrade.census.gov/