What do index entries higlighted in green in the ERG?

Entries highlighted in green can be found listed by ID number in the Initial Isolation and Protective Action Distances section ( Green Section ) at the back of the ERG. All listings in this section are considered Toxic Inhalation Hazards (TIH) and have suggested isolation and protective distances following each (TIH) entry. The section is made up of two tables with Table 1 listing all (TIH)s including those that react when spilled in water. Table 2 lists only (TIH)s that produce large amounts of (TIH) Gases when spilled in water plus the gas produced during the reaction.