# Phenyl phosphorus dichloride — Postal shipping restrictions by item category For Phenyl phosphorus dichloride, carrier is USPS; restriction type is restricted; scope is domestic mail (air and surface); conditions is Hazard class 8, UN2798, packing group II; domestic mail air: 8A; domestic mail surface: 8A, recorded from its source on 2026-08-10. - **Item category:** Phenyl phosphorus dichloride _(verified: appears in the quote below)_ - **Carrier:** USPS _(our reading, not quoted from the source)_ - **Restriction type:** restricted _(our reading, not quoted from the source)_ - **Scope:** domestic mail (air and surface) _(our reading, not quoted from the source)_ - **Conditions:** Hazard class 8, UN2798, packing group II; domestic mail air: 8A; domestic mail surface: 8A _(verified: appears in the quote below)_ ## What the source says > Phenyl phosphorus dichloride 8 UN2798 II 8A 8A ## Source - https://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf Last verified: 2026-08-10. Review by: 2027-08-10. Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).