UN/NA 3521 · Silicon tetrafluoride, adsorbed

Material name

3521 on a placard, orange panel or shipping paper

It points to the ERG 2024 entry “Silicon tetrafluoride, adsorbed” and to Guide 173. On a numbered orange panel, 3521 is the lower number (how to read an orange panel).

ERG 2024 markings for 3521

3521 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Silicon tetrafluoride, adsorbed”. Hazora shows those distances in the app, not on this page. Its guide number 173 has no P.

Entries near 3521

By number (yellow pages): before 3521 come UN/NA 3518 Adsorbed gas, poisonous, oxidizing, corrosive, n.o.s. (Guide 173); UN/NA 3519 Boron trifluoride, adsorbed (Guide 173) and UN/NA 3520 Chlorine, adsorbed (Guide 173); after it, UN/NA 3522 Arsine, adsorbed (Guide 173); UN/NA 3523 Germane, adsorbed (Guide 173) and UN/NA 3524 Phosphorus pentafluoride, adsorbed (Guide 173).

By name (blue pages): “Silicon tetrafluoride, adsorbed” comes after Silicon tetrachloride (UN/NA 1818, Guide 157) and Silicon tetrafluoride (UN/NA 1859, Guide 125) and before Silicon tetrafluoride, compressed (UN/NA 1859, Guide 125) and Silver arsenite (UN/NA 1683, Guide 151).

Other names starting with “Silicon”: Silicon powder, amorphous (UN/NA 1346, Guide 170).

Guide 173 · Library

Guide 173 covers 14 UN/NA numbers. The 12 around 3521 in the guide’s number order: UN/NA 3512 Adsorbed gas, poisonous, n.o.s.; UN/NA 3515 Adsorbed gas, poisonous, oxidizing, n.o.s.; UN/NA 3516 Adsorbed gas, poisonous, corrosive, n.o.s.; UN/NA 3517 Adsorbed gas, poisonous, flammable, corrosive, n.o.s.; UN/NA 3518 Adsorbed gas, poisonous, oxidizing, corrosive, n.o.s.; UN/NA 3519 Boron trifluoride, adsorbed; UN/NA 3520 Chlorine, adsorbed; UN/NA 3522 Arsine, adsorbed; UN/NA 3523 Germane, adsorbed; UN/NA 3524 Phosphorus pentafluoride, adsorbed; UN/NA 3525 Phosphine, adsorbed; UN/NA 3526 Hydrogen selenide, adsorbed.

Sources

• PHMSA · ERG 2024 · EN / ES / FR