Reference Source

Nitrocellulose, with not more than 12.6 percent, by dry mass mixture with or without plasticizer, with or without pigment

For Nitrocellulose, with not more than 12.6 percent, by dry mass mixture with or without plasticizer, with or without pigment, carrier is USPS; restriction type is restricted; scope is domestic mail: surface only (air prohibited); conditions is Hazard class 4.1, UN2557, packing group II; domestic mail air: Prohibited; domestic mail surface: 4A, recorded from its source on 2026-08-10.

Item category
Nitrocellulose, with not more than 12.6 percent, by dry mass mixture with or without plasticizer, with or without pigment verified
Carrier
USPS our reading
Restriction type
restricted our reading
Scope
domestic mail: surface only (air prohibited) our reading
Conditions
Hazard class 4.1, UN2557, packing group II; domestic mail air: Prohibited; domestic mail surface: 4A 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

Nitrocellulose, with not more than 12.6 percent, by dry mass mixture with or without plasticizer, with or without pigment 4.1 UN2557 II Prohibited 4A

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

Source

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