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2004 ERG (Emergency Response Guidebook)

This is an online version of the 2004 ERG (Emergency Response Guidebook) which is produced by the USDOT for first responders during the initial phase of a Dangerous goods/Hazardous Materials incident. Have you ever wondered what those four digit numbers on the placards on the side of trucks and rail cars mean? Our online 2004 ERG will give you your answer.

Table of Isolation and Protective Action Distances

UN# 1955 - 2199

Isolation and Protective Action Distances Table
SMALL SPILLSLARGE SPILLS
UN#Name of MaterialFirst ISOLATE in all DirectionsThen PROTECT Persons Downwind During-First ISOLATE in all DirectionsThen PROTECT Persons Downwind During-
DayNightDayNight
mftkmmikmmimftkmmikmmi

Please see: How to use the table of initial isolation and protective action distances

1955Compressed gas, poisonous, n.o.s.60020005.93.711+7+1000300011+7+11+7+
1955Compressed gas, poisonous, n.o.s. (Inhalation Hazard Zone A) 60020005.93.711+7+1000300011+7+11+7+
1955Compressed gas, poisonous, n.o.s. (Inhalation Hazard Zone B) 602000.40.321.380025007.84.911+7+
1955Compressed gas, poisonous, n.o.s. (Inhalation Hazard Zone C) 301000.30.21.20.82408002.41.56.44
1955Compressed gas, poisonous, n.o.s. (Inhalation Hazard Zone D) 301000.20.10.70.41204001.20.83.82.4
1955Compressed gas, toxic, n.o.s.60020005.93.711+7+1000300011+7+11+7+
1955Compressed gas, toxic, n.o.s. (Inhalation Hazard Zone A) 60020005.93.711+7+1000300011+7+11+7+
1955Compressed gas, toxic, n.o.s. (Inhalation Hazard Zone B) 602000.40.321.380025007.84.911+7+
1955Compressed gas, toxic, n.o.s. (Inhalation Hazard Zone C) 301000.30.21.20.82408002.41.56.44
1955Compressed gas, toxic, n.o.s. (Inhalation Hazard Zone D) 301000.20.10.70.41204001.20.83.82.4
1955Liquefied gas, poisonous, n.o.s.60020005.93.711+7+1000300011+7+11+7+
1955Liquefied gas, poisonous, n.o.s. (Inhalation Hazard Zone A) 60020005.93.711+7+1000300011+7+11+7+
1955Liquefied gas, poisonous, n.o.s. (Inhalation Hazard Zone B) 602000.40.321.380025007.84.911+7+
1955Liquefied gas, poisonous, n.o.s. (Inhalation Hazard Zone C) 301000.30.21.20.82408002.41.56.44
1955Liquefied gas, poisonous, n.o.s. (Inhalation Hazard Zone D) 301000.20.10.70.41204001.20.83.82.4
1955Liquefied gas, toxic, n.o.s.60020005.93.711+7+1000300011+7+11+7+
1955Liquefied gas, toxic, n.o.s. (Inhalation Hazard Zone A) 60020005.93.711+7+1000300011+7+11+7+
1955Liquefied gas, toxic, n.o.s. (Inhalation Hazard Zone B) 602000.40.321.380025007.84.911+7+
1955Liquefied gas, toxic, n.o.s. (Inhalation Hazard Zone C) 301000.30.21.20.82408002.41.56.44
1955Liquefied gas, toxic, n.o.s. (Inhalation Hazard Zone D) 301000.20.10.70.41204001.20.83.82.4
1955Organic phosphate compound mixed with compressed gas12040010.73.42.145015004.42.79.66
1955Organic phosphate mixed with compressed gas12040010.73.42.145015004.42.79.66
1955Organic phosphorus compound mixed with compressed gas12040010.73.42.145015004.42.79.66
1967Insecticide gas, poisonous, n.o.s.12040010.73.42.145015004.42.79.66
1967Insecticide gas, toxic, n.o.s.12040010.73.42.145015004.42.79.66
1967Parathion and compressed gas mixture12040010.73.42.145015004.42.79.66
1975Dinitrogen tetroxide and Nitric oxide mixture301000.20.10.80.5602000.60.42.71.7
1975Nitric oxide and Dinitrogen tetroxide mixture301000.20.10.80.5602000.60.42.71.7
1975Nitric oxide and Nitrogen dioxide mixture301000.20.10.80.5602000.60.42.71.7
1975Nitric oxide and Nitrogen tetroxide mixture301000.20.10.80.5602000.60.42.71.7
1975Nitrogen dioxide and Nitric oxide mixture301000.20.10.80.5602000.60.42.71.7
1975Nitrogen tetroxide and Nitric oxide mixture301000.20.10.80.5602000.60.42.71.7
1994Iron pentacarbonyl301000.30.20.60.41505001.6131.9
1994Iron pentacarbonyl301000.30.20.60.41505001.6131.9
2004Magnesium diamide (when spilled in water) 301000.10.10.40.3903000.70.42.91.8
2011Magnesium phosphide (when spilled in water) 602000.50.42.41.580025007.54.711+7+
2012Potassium phosphide (when spilled in water) 602000.40.31.71.150016004.72.911+7+
2013Strontium phosphide (when spilled in water) 602000.40.21.71.150016004.62.911+7+
2032Nitric acid, fuming301000.10.10.20.2602000.60.41.20.8
2032Nitric acid, red fuming301000.10.10.20.2602000.60.41.20.8
2186Hydrogen chloride, refrigerated liquid301000.10.10.40.336012003.62.210.46.5
2188Arsine602000.60.431.942014004.12.69.55.9
2188SA (when used as a weapon) 602000.90.52.51.542013004.12.58.15
2189Dichlorosilane301000.20.110.6420140042.510.86.7
2190Oxygen difluoride60020005.93.711+7+1000300011+7+11+7+
2190Oxygen difluoride, compressed60020005.93.711+7+1000300011+7+11+7+
2191Sulfuryl fluoride301000.10.10.30.21204001.20.83.82.4
2191Sulphuryl fluoride301000.10.10.30.21204001.20.83.82.4
2192Germane301000.20.110.6903000.80.531.9
2194Selenium hexafluoride903000.70.53.2245015004.42.795.6
2195Tellurium hexafluoride9030010.642.5600200063.711+7+
2196Tungsten hexafluoride301000.20.11.10.712040010.63.72.3
2197Hydrogen iodide, anhydrous301000.10.10.40.21204001.30.83.72.3
2198Phosphorus pentafluoride301000.30.21.611806001.614.62.9
2198Phosphorus pentafluoride, compressed301000.30.21.611806001.614.62.9
2199Phosphine602000.70.43.11.945014004.32.79.66

Data Source for our online 2004 ERG

This information was compiled from the 2004 Emergency Response Guidebook (2004 ERG) which is produced by the U.S. Department of Transportation.

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