UN/NA 1384 · Sodium dithionite

Material name

1384 on a placard, orange panel or shipping paper

It can stand for any of three ERG 2024 entries: “Sodium dithionite”, “Sodium hydrosulfite” and “Sodium hydrosulphite”. All use Guide 135, so the number alone is enough to find the guide. On a numbered orange panel, 1384 is the lower number (how to read an orange panel).

ERG 2024 markings for 1384

1384 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Sodium dithionite (when spilled in water)”. Hazora shows those distances in the app, not on this page. “When spilled in water” means the material produces large amounts of toxic inhalation hazard (TIH) gases when spilled in water. Table 2 (Water-Reactive Materials Which Produce Toxic Gases) lists the gases produced: H2S (hydrogen sulfide) and SO2 (sulfur dioxide). Its guide number 135 has no P.

Entries near 1384

By number (yellow pages): before 1384 come UN/NA 1381 Phosphorus, white, dry or under water or in solution (Guide 136); UN/NA 1382 Potassium sulfide, anhydrous (Guide 135) and UN/NA 1383 Aluminum powder, pyrophoric (Guide 135); after it, UN/NA 1385 Sodium sulfide, anhydrous (Guide 135); UN/NA 1386 Seed cake, with more than 1.5% oil and not more than 11% moisture (Guide 135) and UN/NA 1387 Wool waste, wet (Guide 133).

By name (blue pages): “Sodium dithionite” comes after Sodium dinitro-o-cresolate, wetted with not less than 10% water (UN/NA 3369, Guide 113) and Sodium dinitro-o-cresolate, wetted with not less than 15% water (UN/NA 1348, Guide 113) and before Sodium fluoride, solid (UN/NA 1690, Guide 154) and Sodium fluoride, solution (UN/NA 3415, Guide 154).

By name (blue pages): “Sodium hydrosulfite” comes after Sodium hydrosulfide, with less than 25% water of crystallization (UN/NA 2318, Guide 135) and Sodium hydrosulfide, with not less than 25% water of crystallization (UN/NA 2949, Guide 154) and before Sodium hydrosulphide, hydrated, with not less than 25% water of crystallization (UN/NA 2949, Guide 154) and Sodium hydrosulphide, with less than 25% water of crystallization (UN/NA 2318, Guide 135).

By name (blue pages): “Sodium hydrosulphite” comes after Sodium hydrosulphide, with less than 25% water of crystallization (UN/NA 2318, Guide 135) and Sodium hydrosulphide, with not less than 25% water of crystallization (UN/NA 2949, Guide 154) and before Sodium hydroxide, solid (UN/NA 1823, Guide 154) and Sodium hydroxide, solution (UN/NA 1824, Guide 154).

Other names starting with “Sodium”: Sodium cyanide, solid (UN/NA 1689, Guide 157); Sodium cyanide, solution (UN/NA 3414, Guide 157); Sodium dichloroisocyanurate (UN/NA 2465, Guide 140); Sodium fluoroacetate (UN/NA 2629, Guide 151); Sodium fluorosilicate (UN/NA 2674, Guide 154) and Sodium hydride (UN/NA 1427, Guide 138).

Guide 135 · Library

Guide 135 covers 54 UN/NA numbers. The 12 around 1384 in the guide’s number order: UN/NA 1363 Copra; UN/NA 1369 p-Nitrosodimethylaniline; UN/NA 1376 Iron oxide, spent; UN/NA 1380 Pentaborane; UN/NA 1382 Potassium sulfide, anhydrous; UN/NA 1383 Aluminum powder, pyrophoric; UN/NA 1385 Sodium sulfide, anhydrous; UN/NA 1386 Seed cake, with more than 1.5% oil and not more than 11% moisture; UN/NA 1854 Barium alloys, pyrophoric; UN/NA 1855 Calcium, pyrophoric; UN/NA 1923 Calcium dithionite; UN/NA 1929 Potassium dithionite.

Sources

• PHMSA · ERG 2024 · EN / ES / FR