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.
2004 ERG Menu
Table of Isolation and Protective Action Distances
UN Number Rage
[ 1005-1082 | 1092-1582 | 1583-1752 | 1754-1834 | 1836-1953 ][ 1955-2199 | 2202-2806 | 2810-2978 | 2985-3162 | 3246-3306 ]
[ 3307-9269 ]
UN# 2810 - 2978
| Isolation and Protective Action Distances Table | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SMALL SPILLS | LARGE SPILLS | ||||||||||||
| UN# | Name of Material | First ISOLATE in all Directions | Then PROTECT Persons Downwind During- | First ISOLATE in all Directions | Then PROTECT Persons Downwind During- | ||||||||
| Day | Night | Day | Night | ||||||||||
| m | ft | km | mi | km | mi | m | ft | km | mi | km | mi | ||
|
Please see: How to use the table of initial isolation and protective action distances | |||||||||||||
| 2810 | Buzz (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.5 | 0.3 | 60 | 200 | 0.5 | 0.3 | 2 | 1.2 |
| 2810 | BZ (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.5 | 0.3 | 60 | 200 | 0.5 | 0.3 | 2 | 1.2 |
| 2810 | CS (when used as a weapon) | 60 | 200 | 0.4 | 0.2 | 1.2 | 0.7 | 240 | 800 | 2.6 | 1.6 | 5.7 | 3.5 |
| 2810 | DC (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.9 | 0.5 | 240 | 800 | 2.3 | 1.4 | 5.4 | 3.3 |
| 2810 | GA (when used as a weapon) | 30 | 100 | 0.4 | 0.2 | 0.7 | 0.4 | 150 | 500 | 1.7 | 1 | 3.1 | 1.9 |
| 2810 | GB (when used as a weapon) | 150 | 500 | 1.7 | 1 | 3.4 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | GD (when used as a weapon) | 90 | 300 | 0.9 | 0.5 | 1.8 | 1.1 | 800 | 2500 | 6.8 | 4.2 | 10.5 | 6.5 |
| 2810 | GF (when used as a weapon) | 30 | 100 | 0.4 | 0.2 | 0.7 | 0.4 | 240 | 800 | 2.3 | 1.4 | 5.2 | 3.2 |
| 2810 | H (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.7 | 0.4 | 1.2 | 0.7 |
| 2810 | HD (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.7 | 0.4 | 1.2 | 0.7 |
| 2810 | HL (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.4 | 0.2 | 90 | 300 | 1 | 0.6 | 1.8 | 1.1 |
| 2810 | HN-1 (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.7 | 0.4 | 1.3 | 0.8 |
| 2810 | HN-2 (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.2 | 0.7 |
| 2810 | HN-3 (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.1 | 30 | 100 | 0.2 | 0.1 | 0.4 | 0.2 |
| 2810 | L (Lewisite) (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.4 | 0.2 | 90 | 300 | 1 | 0.6 | 1.8 | 1.1 |
| 2810 | Lewisite (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.4 | 0.2 | 90 | 300 | 1 | 0.6 | 1.8 | 1.1 |
| 2810 | Mustard (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.1 | 30 | 100 | 0.2 | 0.1 | 0.4 | 0.2 |
| 2810 | Mustard lewisite (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.4 | 0.2 | 90 | 300 | 1 | 0.6 | 1.8 | 1.1 |
| 2810 | Poisonous liquid, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Poisonous liquid, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Poisonous liquid, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.5 | 0.3 | 1.8 | 1.1 | 330 | 1100 | 3.3 | 2.1 | 7.3 | 4.6 |
| 2810 | Poisonous liquid, organic, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Poisonous liquid, organic, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Poisonous liquid, organic, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 5.6 | 3.5 |
| 2810 | Sarin (when used as a weapon) | 150 | 500 | 1.7 | 1 | 3.4 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Soman (when used as a weapon) | 90 | 300 | 0.9 | 0.5 | 1.8 | 1.1 | 800 | 2500 | 6.8 | 4.2 | 10.5 | 6.5 |
| 2810 | Tabun (when used as a weapon) | 30 | 100 | 0.4 | 0.2 | 0.7 | 0.4 | 150 | 500 | 1.7 | 1 | 3.1 | 1.9 |
| 2810 | Thickened GD (when used as a weapon) | 90 | 300 | 0.9 | 0.5 | 1.8 | 1.1 | 800 | 2500 | 6.8 | 4.2 | 10.5 | 6.5 |
| 2810 | Toxic liquid, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Toxic liquid, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Toxic liquid, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.5 | 0.3 | 1.8 | 1.1 | 330 | 1100 | 3.3 | 2.1 | 7.3 | 4.6 |
| 2810 | Toxic liquid, organic, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Toxic liquid, organic, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2810 | Toxic liquid, organic, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 5.6 | 3.5 |
| 2810 | VX (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.7 | 0.4 | 1 | 0.6 |
| 2811 | CX (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.5 | 0.3 | 90 | 300 | 1 | 0.6 | 3.1 | 1.9 |
| 2826 | Ethyl chlorothioformate | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.4 | 1 | 0.6 |
| 2845 | Ethyl phosphonous dichloride, anhydrous | 30 | 100 | 0.4 | 0.2 | 0.8 | 0.5 | 210 | 700 | 1.9 | 1.2 | 3.6 | 2.2 |
| 2845 | Methyl phosphonous dichloride | 60 | 200 | 0.4 | 0.3 | 1.2 | 0.8 | 330 | 1000 | 3.1 | 1.9 | 5.9 | 3.7 |
| 2901 | Bromine chloride | 30 | 100 | 0.2 | 0.2 | 0.9 | 0.6 | 240 | 800 | 2.4 | 1.5 | 6.3 | 3.9 |
| 2927 | Ethyl phosphonothioic dichloride, anhydrous | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.2 | 0.1 | 0.3 | 0.2 |
| 2927 | Ethyl phosphorodichloridate | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.3 | 0.2 | 0.4 | 0.2 |
| 2927 | Poisonous liquid, corrosive, n.o.s. | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 | 800 | 2500 | 6.2 | 3.9 | 11+ | 7+ |
| 2927 | Poisonous liquid, corrosive, n.o.s. (Inhalation Hazard Zone A) | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 | 800 | 2500 | 6.2 | 3.9 | 11+ | 7+ |
| 2927 | Poisonous liquid, corrosive, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.5 | 0.3 | 1.8 | 1.1 | 330 | 1100 | 3.3 | 2.1 | 7.3 | 4.6 |
| 2927 | Toxic liquid, corrosive, organic, n.o.s. | 60 | 200 | 0.6 | 0.4 | 2.1 | 1.3 | 800 | 2500 | 6.2 | 3.9 | 11+ | 7+ |
| 2927 | Toxic liquid, corrosive, organic, n.o.s. (Inhalation Hazard Zone A) | 60 | 200 | 0.6 | 0.4 | 2.1 | 1.3 | 800 | 2500 | 6.2 | 3.9 | 11+ | 7+ |
| 2927 | Toxic liquid, corrosive, organic, n.o.s. (Inhalation Hazard Zone B) | 30 | 100 | 0.4 | 0.2 | 0.5 | 0.4 | 180 | 600 | 1.6 | 1 | 2.9 | 1.8 |
| 2929 | Poisonous liquid, flammable, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Poisonous liquid, flammable, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Poisonous liquid, flammable, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 5.6 | 3.5 |
| 2929 | Poisonous liquid, flammable, organic, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Poisonous liquid, flammable, organic, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Poisonous liquid, flammable, organic, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 5.6 | 3.5 |
| 2929 | Toxic liquid, flammable, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Toxic liquid, flammable, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.5 | 2.2 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Toxic liquid, flammable, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 5.6 | 3.5 |
| 2929 | Toxic liquid, flammable, organic, n.o.s. | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Toxic liquid, flammable, organic, n.o.s. (Inhalation Hazard Zone A) | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 2929 | Toxic liquid, flammable, organic, n.o.s. (Inhalation Hazard Zone B) | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 5.6 | 3.5 |
| 2977 | Radioactive material, Uranium hexafluoride, fissile (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
| 2977 | Uranium hexafluoride, fissile containing more than 1% Uranium-235 (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
| 2978 | Radioactive material, Uranium hexafluoride (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
| 2978 | Radioactive material, Uranium hexafluoride, non-fissile or fissile-excepted (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
| 2978 | Uranium hexafluoride (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
| 2978 | Uranium hexafluoride, fissile-excepted (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
| 2978 | Uranium hexafluoride, low specific activity (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
| 2978 | Uranium hexafluoride, non-fissile (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.7 | 0.5 | 3.3 | 2.1 |
UN Number Rage
[ 1005-1082 | 1092-1582 | 1583-1752 | 1754-1834 | 1836-1953 ][ 1955-2199 | 2202-2806 | 2810-2978 | 2985-3162 | 3246-3306 ]
[ 3307-9269 ]
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.
Related Resources
- Guide for Handling Household Chemicals
Things you can do to make your home safer. - USDOT Hazardous Materials Table 49 CFR 172.101
An online version of the USDOT's listing of hazardous materials from 49CFR 172.101. This table can be sorted by proper shipping name, UN/NA ID and/or by primary hazard class/division. - US DOT Hazardous Materials Transportation Placards
Hazardous materials placards (DOT placards) are required when shipping hazardous materials in the United States, Canada and Mexico. These pages provide US DOT definitions for each hazmat placard. - Chemical Database
This database focuses on the most common chemical compounds used in the home and industry.
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