Reference Source

Toxic by inhalation liquid, water- reactive, flammable, n.o.s. with an LC50 lower than or equal to 1000 ml/ m3 and saturated vapor concentration greater than or equal to 10 LC50-

For Toxic by inhalation liquid, water- reactive, flammable, n.o.s. with an LC50 lower than or equal to 1000 ml/ m3 and saturated vapor concentration greater than or equal to 10 LC50-, carrier is USPS; restriction type is prohibited; scope is domestic mail (air and surface); conditions is Hazard class 6.1, UN3491, packing group I; domestic mail air: Prohibited; domestic mail surface: Prohibited, recorded from its source on 2026-08-10.

Item category
Toxic by inhalation liquid, water- reactive, flammable, n.o.s. with an LC50 lower than or equal to 1000 ml/ m3 and saturated vapor concentration greater than or equal to 10 LC50- verified
Carrier
USPS our reading
Restriction type
prohibited our reading
Scope
domestic mail (air and surface) our reading
Conditions
Hazard class 6.1, UN3491, packing group I; domestic mail air: Prohibited; domestic mail surface: Prohibited verified
Sourcepe.usps.com
Verified
Review by
DatasetPostal shipping restrictions by item category

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.

What the source says

Toxic by inhalation liquid, water- reactive, flammable, n.o.s. with an LC50 lower than or equal to 1000 ml/ m3 and saturated vapor concentration greater than or equal to 10 LC50- 6.1 UN3491 I Prohibited Prohibited

pe.usps.com, retrieved 2026-08-10

Source

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