Reference Source

Trimethylchlorosilane · USPS

What is the restriction type for Trimethylchlorosilane · USPS?

For Trimethylchlorosilane, carrier is USPS; restriction type is prohibited; scope is domestic mail (air and surface); conditions is Hazard class 3, UN1298, packing group II; domestic mail air: Prohibited; domestic mail surface: Prohibited, recorded from its source on 2026-08-10.

Trimethylchlorosilane 3 UN1298 II Prohibited Prohibited

— pe.usps.com, retrieved 2026-08-10

Item or substance
Trimethylchlorosilane verified
Carrier
USPS our reading
Restriction type
prohibited our reading
Scope
domestic mail (air and surface) our reading
Conditions
Hazard class 3, UN1298, packing group II; domestic mail air: Prohibited; domestic mail surface: Prohibited
Sourcepe.usps.com
Verified
Review by
DatasetWhat can be mailed: USPS hazardous materials, plus item rules for post and couriers

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.