UN/NA 1808 · Phosphorus tribromide

Material name

1808 on a placard, orange panel or shipping paper

It points to the ERG 2024 entry “Phosphorus tribromide” and to Guide 137. On a numbered orange panel, 1808 is the lower number (how to read an orange panel).

ERG 2024 markings for 1808

1808 is highlighted in green, so ERG 2024 Table 1 (Initial Isolation and Protective Action Distances) has an entry for it: “Phosphorus tribromide (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 gas produced: HBr (hydrogen bromide). Its guide number 137 has no P.

Entries near 1808

By number (yellow pages): before 1808 come UN/NA 1805 Phosphoric acid, solution (Guide 154); UN/NA 1806 Phosphorus pentachloride (Guide 137) and UN/NA 1807 Phosphorus pentoxide (Guide 137); after it, UN/NA 1809 Phosphorus trichloride (Guide 137); UN/NA 1810 Phosphorus oxychloride (Guide 137) and UN/NA 1811 Potassium hydrogen difluoride, solid (Guide 154).

By name (blue pages): “Phosphorus tribromide” comes after Phosphorus sesquisulfide, free from yellow and white phosphorus (UN/NA 1341, Guide 139) and Phosphorus sesquisulphide, free from yellow and white phosphorus (UN/NA 1341, Guide 139) and before Phosphorus trichloride (UN/NA 1809, Guide 137) and Phosphorus trioxide (UN/NA 2578, Guide 157).

Other names starting with “Phosphorus”: Phosphorus pentafluoride, adsorbed (UN/NA 3524, Guide 173); Phosphorus pentafluoride, compressed (UN/NA 2198, Guide 125); Phosphorus pentasulphide, free from yellow and white phosphorus (UN/NA 1340, Guide 139); Phosphorus trisulfide, free from yellow and white phosphorus (UN/NA 1343, Guide 139); Phosphorus, amorphous (UN/NA 1338, Guide 133) and Phosphorus, white, dry or under water or in solution (UN/NA 1381, Guide 136).

Guide 137 · Library

Guide 137 covers 32 UN/NA numbers. The 12 around 1808 in the guide’s number order: UN/NA 1739 Benzyl chloroformate; UN/NA 1754 Chlorosulfonic acid (with or without sulfur trioxide); UN/NA 1758 Chromium oxychloride; UN/NA 1777 Fluorosulfonic acid; UN/NA 1806 Phosphorus pentachloride; UN/NA 1807 Phosphorus pentoxide; UN/NA 1809 Phosphorus trichloride; UN/NA 1810 Phosphorus oxychloride; UN/NA 1817 Pyrosulfuryl chloride; UN/NA 1827 Stannic chloride, anhydrous; UN/NA 1828 Sulfur chlorides; UN/NA 1829 Sulfur trioxide, stabilized.

Sources

• PHMSA · ERG 2024 · EN / ES / FR