Emergency Response Guidebook (ERG)

This is an online version of the 2008 Emergency Response Guidebook (ERG) 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 ERG will give you your answer.

Table of Isolation and Protective Action Distances

UN# 2985 - 3162

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

Current as of: Oct. 2, 2011

2985Chlorosilanes, flammable, corrosive, n.o.s.301000.10.10.20.11003000.50.31.61
2985Chlorosilanes, n.o.s.301000.10.10.20.11003000.50.31.61
2986Chlorosilanes, corrosive, flammable, n.o.s.301000.10.10.20.11003000.50.31.61
2986Chlorosilanes, n.o.s.301000.10.10.20.11003000.50.31.61
2987Chlorosilanes, corrosive, n.o.s.301000.10.10.20.11003000.50.31.61
2987Chlorosilanes, n.o.s.301000.10.10.20.11003000.50.31.61
2988Chlorosilanes, n.o.s.301000.10.10.20.11003000.50.31.61
2988Chlorosilanes, water-reactive, flammable, corrosive, n.o.s.301000.10.10.20.11003000.50.31.61
30232-Methyl-2-heptanethiol301000.10.10.20.1602000.50.30.70.5
3023tert-Octyl mercaptan301000.10.10.20.1602000.50.30.70.5
3048Aluminum phosphide pesticide602000.50.31.91.260020005.83.611+7+
3049Metal alkyl halides, n.o.s.301000.10.10.20.1602000.40.31.30.8
3049Metal alkyl halides, water-reactive, n.o.s.301000.10.10.20.1602000.40.31.30.8
3049Metal aryl halides, n.o.s.301000.10.10.20.1602000.40.31.30.8
3049Metal aryl halides, water-reactive, n.o.s.301000.10.10.20.1602000.40.31.30.8
3052Aluminum alkyl halides301000.10.10.20.1602000.40.31.30.8
3052Aluminum alkyl halides, liquid301000.10.10.20.1602000.40.31.30.8
3052Aluminum alkyl halides, solid301000.10.10.20.1602000.40.31.30.8
3057Trifluoroacetyl chloride301000.20.210.780025004.62.911+7+
3079Methacrylonitrile, stabilized301000.10.10.20.1602000.50.30.90.5
3083Perchloryl fluoride301000.20.10.70.450015003.128.45.2
3122Poisonous liquid, oxidizing, n.o.s.602000.80.51.81.130010002.91.85.73.6
3122Poisonous liquid, oxidizing, n.o.s.602000.80.51.81.130010002.91.85.73.6
3122Poisonous liquid, oxidizing, n.o.s.301000.10.10.30.2602000.60.410.6
3122Toxic liquid, oxidizing, n.o.s.602000.80.51.81.130010002.91.85.73.6
3122Toxic liquid, oxidizing, n.o.s.602000.80.51.81.130010002.91.85.73.6
3122Toxic liquid, oxidizing, n.o.s.301000.10.10.30.2602000.60.410.6
3123Poisonous liquid, water-reactive, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Poisonous liquid, water-reactive, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Poisonous liquid, water-reactive, n.o.s.301000.10.10.20.1602000.50.30.80.5
3123Poisonous liquid, which in contact with water emits flammable gases, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Poisonous liquid, which in contact with water emits flammable gases, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Poisonous liquid, which in contact with water emits flammable gases, n.o.s.301000.10.10.20.1602000.50.30.80.5
3123Toxic liquid, water-reactive, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Toxic liquid, water-reactive, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Toxic liquid, water-reactive, n.o.s.301000.10.10.20.1602000.50.30.80.5
3123Toxic liquid, which in contact with water emits flammable gases, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Toxic liquid, which in contact with water emits flammable gases, n.o.s.602000.80.51.81.130010002.91.85.73.6
3123Toxic liquid, which in contact with water emits flammable gases, n.o.s.301000.10.10.20.1602000.50.30.80.5
3160Liquefied gas, poisonous, flammable, n.o.s.1003000.60.42.51.580025004.42.78.95.6
3160Liquefied gas, poisonous, flammable, n.o.s.1003000.60.42.51.580025004.42.78.95.6
3160Liquefied gas, poisonous, flammable, n.o.s.301000.20.10.80.540012501.91.24.83
3160Liquefied gas, poisonous, flammable, n.o.s.301000.10.10.30.230010001.30.84.12.6
3160Liquefied gas, poisonous, flammable, n.o.s.301000.10.10.20.11505000.70.52.71.7
3160Liquefied gas, toxic, flammable, n.o.s.1003000.60.42.51.580025004.42.78.95.6
3160Liquefied gas, toxic, flammable, n.o.s.1003000.60.42.51.580025004.42.78.95.6
3160Liquefied gas, toxic, flammable, n.o.s.301000.20.10.80.540012501.91.24.83
3160Liquefied gas, toxic, flammable, n.o.s.301000.10.10.30.230010001.30.84.12.6
3160Liquefied gas, toxic, flammable, n.o.s.301000.10.10.20.11505000.70.52.71.7
3162Liquefied gas, poisonous, n.o.s.1003000.50.32.11.380025004.42.78.95.6
3162Liquefied gas, poisonous, n.o.s.1003000.50.32.11.380025004.42.78.95.6
3162Liquefied gas, poisonous, n.o.s.301000.20.10.80.540012501.91.24.83
3162Liquefied gas, poisonous, n.o.s.301000.10.10.40.220060010.63.22
3162Liquefied gas, poisonous, n.o.s.301000.10.10.20.11505000.70.52.71.7
3162Liquefied gas, toxic, n.o.s.1003000.50.32.11.380025004.42.78.95.6
3162Liquefied gas, toxic, n.o.s.1003000.50.32.11.380025004.42.78.95.6
3162Liquefied gas, toxic, n.o.s.301000.20.10.80.540012501.91.24.83
3162Liquefied gas, toxic, n.o.s.301000.10.10.40.220060010.63.22
3162Liquefied gas, toxic, n.o.s.301000.10.10.20.11505000.70.52.71.7

Data Source for our online 2008 ERG

This information was compiled from the 2008 Emergency Response Guidebook (2008 ERG) which is produced by the U.S. Department of Transportation.

(Data last updated/verified: Oct. 2, 2011)

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WARNING: These pages are for general reference and educational purposes only and MUST NOT be relied upon as a sole source to determine regulatory compliance or where matters of life and health are concerned. This site and the author do not warrant or guarantee the accuracy or the sufficiency of the information provided and do not assume any responsibility for its use.

To ensure regulatory compliance when transporting hazardous materials or dangerous goods, one must receive proper training and certification from a qualified instructor and refer to the current year's Code of Federal Regulations Title 49 (49CFR) or your country's shipping regulations. In matters regarding workplace safety, refer to current OSHA regulations (29CFR) and NIOSH guidelines or your own country's health and safety regulations. No one should ever enter into a hazardous environment without proper training from qualified instructors.

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