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1,3-Pentadiene, 1,1-dichloro-4-methyl-

CAS 55667-43-1

Molecular structure of 55667-43-1
US productionNot reported
Import value, 2024$61M
Top sourceChina 56%

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 290329 · basket

These shares come from HS customs code 290329, which covers 39 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 56%ChinaDE 26%GermanyCZ 9%Czech RepublicMY 3%MalaysiaJP 3%Japan

Why It Matters

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

Chemical Identity

CAS55667-43-1
PubChem CIDNot recorded
DTXSIDDTXSID1069037
FormulaC6H8Cl2
Mol. Weight151.03 g/mol
SMILESCC(C)=CC=C(Cl)Cl

Data Sources

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Brief citations

1,3-Pentadiene, 1,1-dichloro-4-methyl- (CAS 55667-43-1) https://chemicalindependence.com/chemical/55667-43-1/ EPA TSCA Inventory: CAS 55667-43-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 290329 for CAS 55667-43-1. Reporting year: 2024. https://usatrade.census.gov/