Tetramethyl lead
CAS 75-74-1
Plumbane, tetramethyl-
US productionNot reported
Import value, 2024$20M
Top sourceUnited Kingdom 88%
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 unknownProduction is reported production, not a complete census of factories.
Where It Comes From
Customs basis: HS 293110, 381111 · exact
Source Countries
Country of origin for US imports, from Census customs data (2024).
GB 88%United KingdomJP 9%JapanIN 3%India
- Germany
Why It Matters
No EPA sector or FDA product records name a use for this chemical.
Chemical Identity
CAS75-74-1
PubChem CIDNot recorded
DTXSIDDTXSID0026123
FormulaC4H12Pb
Mol. Weight267.3 g/mol
SMILESC[Pb](C)(C)C
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Tetramethyl lead (CAS 75-74-1) https://chemicalindependence.com/chemical/75-74-1/ EPA TSCA Inventory: CAS 75-74-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293110,381111 for CAS 75-74-1. Reporting year: 2024. https://usatrade.census.gov/