Within the Yellow and Blue sections, you will notice some entries are highlighted green.

This green highlight indicates the index entry is a Toxic Inhalation Hazard (TIH) material, a chemical warfare agent, or a Dangerous Water Reactive Material (it produces toxic gas upon contact with water).

For entries highlighted in green, follow these steps:

• If there is a NO fire:
• Go directly to Table 1 in the green bordered page section
• Look up the ID number and name of the material
• Identify initial isolation and protective action distances
•  If there is a fire or a fire is involved:
• Also consult the assigned orange guide
• If applicable, apply the evacuation information shown under the Public Safety section.  
• If the product listing includes the reference "(when spilled in water)", consult Table 2 (following Table 1 in the green pages) for a list of the generated gasses (for informational purposes only) and DO NOT use water as an extinguishing agent. These materials produce large amounts of TIH gases when spilled in water. Some water reactive materials are also TIH materials themselves. In these instances, two entries are provided in Table 1 for land-based and water-based spills. If the water reactive material is NOT a TIH and this material is NOT spilled in water, Table 1 and 2 does not apply and safety distances will be found within the appropriate orange guide.