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ERG Guide 117 Datasheet (for unassigned UN/NA numbers)

ERG 2020

What is this information?

The Emergency Response Guidebook (ERG) provides general response recommendations for first responders.

UN/NA datasheets display several items from the ERG: material names, response guide PDFs, initial isolation and protective action distances, warnings about toxic-by-inhalation gases that may be produced if the material spills in water, and polymerization hazards.

A caution icon. The ERG recommendations are developed for use during the initial phase of transportation incidents; they are not intended for spills at facilities.

Response Guide 117

link to a PDF file Gases - Toxic - Flammable (Extreme Hazard)

Material Names

  • AC

ERG Table 1: Initial Isolation and Protective Action Distances

Name of Material Small Spills
(from a small package or small leak)		 Large Spills
(from a large package or many small packages)
First
Isolate
in all Directions		 Then Protect Downwind First
Isolate
in all Directions		 Then Protect Downwind
Day Night Day Night
AC (when used as a weapon) 200 ft 0.2 mi 0.6 mi 3000 ft 2.3 mi 5.3 mi

The ERG doesn't predict that large amounts of toxic-by-inhalation gases will be produced if this material is spilled in water.

Map the ERG's Initial Isolation and Protective Action Distances

Use this tool to see the ERG green table values (above) on a map, and you can also export the map objects as a KML file. See the ERG Distances (PDF) for information on using these values and how they were created.

Click on the map (or type in the coordinates) to set the spill location. Then use the choices in the panel to provide additional details about the release.

See data entry hints
  • DAY is between sunrise and sunset.
  • SMALL spills are 55 US gallons (208 liters) or less.
  • Enter the direction FROM which the WIND is blowing.
  • LOW wind is less than 6 miles per hour (less than 10 kilometers/hour), MODERATE wind is 6-12 mph (10-20 km/h), and HIGH wind is greater than 12 mph (greater than 20 km/h).

Note: These distances are for spills where there is no fire involved.

If the substance is on FIRE
When a fire is involved, the ERG developers state that you should use EVACUATION value in the appropriate orange ERG Response Guide for the initial isolation distance. Then also PROTECT in the downwind direction according to the green Table 1 (or Table 3) value for residual material release.

Version 3.0.0