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# 1836 - 1953
| 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 | |||||||||||||
| 1836 | Thionyl chloride (when spilled in water) | 60 | 200 | 0.4 | 0.2 | 1.7 | 1.1 | 450 | 1500 | 4.5 | 2.8 | 10.5 | 6.5 |
| 1836 | Thionyl chloride (when spilled on land) | 30 | 100 | 0.3 | 0.2 | 0.8 | 0.5 | 90 | 300 | 1 | 0.6 | 2.2 | 1.4 |
| 1838 | Titanium tetrachloride (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 120 | 400 | 1.1 | 0.7 | 3.7 | 2.3 |
| 1838 | Titanium tetrachloride (when spilled on land) | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.8 | 0.5 |
| 1859 | Silicon tetrafluoride | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.8 | 0.5 |
| 1859 | Silicon tetrafluoride, compressed | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.5 | 0.3 | 0.8 | 0.5 |
| 1892 | ED (when used as a weapon) | 30 | 100 | 0.4 | 0.2 | 0.9 | 0.5 | 120 | 400 | 1.3 | 0.8 | 2.6 | 1.6 |
| 1892 | Ethyldichloroarsine | 30 | 100 | 0.2 | 0.1 | 0.2 | 0.2 | 60 | 200 | 0.6 | 0.4 | 1.1 | 0.7 |
| 1898 | Acetyl iodide (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.2 | 60 | 200 | 0.6 | 0.4 | 1.8 | 1.1 |
| 1911 | Diborane | 60 | 200 | 0.4 | 0.2 | 1.6 | 1 | 180 | 600 | 1.8 | 1.1 | 5.4 | 3.4 |
| 1911 | Diborane, compressed | 60 | 200 | 0.4 | 0.2 | 1.6 | 1 | 180 | 600 | 1.8 | 1.1 | 5.4 | 3.4 |
| 1923 | Calcium dithionite (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 1923 | Calcium hydrosulfite (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 1923 | Calcium hydrosulphite (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 1931 | Zinc dithionite (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 1931 | Zinc hydrosulfite (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 1931 | Zinc hydrosulphite (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 1.3 | 0.8 |
| 1953 | Compressed gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone A) | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Compressed gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone B) | 30 | 100 | 0.2 | 0.2 | 1.2 | 0.8 | 420 | 1400 | 4 | 2.5 | 10.8 | 6.7 |
| 1953 | Compressed gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone C) | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 240 | 800 | 2.4 | 1.5 | 6.4 | 4 |
| 1953 | Compressed gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone D) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 |
| 1953 | Compressed gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone A) | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Compressed gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone B) | 30 | 100 | 0.2 | 0.2 | 1.2 | 0.8 | 420 | 1400 | 4 | 2.5 | 10.8 | 6.7 |
| 1953 | Compressed gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone C) | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 240 | 800 | 2.4 | 1.5 | 6.4 | 4 |
| 1953 | Compressed gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone D) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 |
| 1953 | Compressed gas, poisonous, flammable, n.o.s. | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Compressed gas, poisonous, flammable, n.o.s. (Inhalation Hazard Zone A) | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Compressed gas, poisonous, flammable, n.o.s. (Inhalation Hazard Zone B) | 30 | 100 | 0.2 | 0.2 | 1.2 | 0.8 | 420 | 1400 | 4 | 2.5 | 10.8 | 6.7 |
| 1953 | Compressed gas, poisonous, flammable, n.o.s. (Inhalation Hazard Zone C) | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 240 | 800 | 2.4 | 1.5 | 6.4 | 4 |
| 1953 | Compressed gas, poisonous, flammable, n.o.s. (Inhalation Hazard Zone D) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 |
| 1953 | Compressed gas, toxic, flammable, n.o.s. | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Compressed gas, toxic, flammable, n.o.s. (Inhalation Hazard Zone A) | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Compressed gas, toxic, flammable, n.o.s. (Inhalation Hazard Zone B) | 30 | 100 | 0.2 | 0.2 | 1.2 | 0.8 | 420 | 1400 | 4 | 2.5 | 10.8 | 6.7 |
| 1953 | Compressed gas, toxic, flammable, n.o.s. (Inhalation Hazard Zone C) | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 240 | 800 | 2.4 | 1.5 | 6.4 | 4 |
| 1953 | Compressed gas, toxic, flammable, n.o.s. (Inhalation Hazard Zone D) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 |
| 1953 | Liquefied gas, flammable, poisonous, n.o.s. | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Liquefied gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone A) | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Liquefied gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone B) | 30 | 100 | 0.2 | 0.2 | 1.2 | 0.8 | 420 | 1400 | 4 | 2.5 | 10.8 | 6.7 |
| 1953 | Liquefied gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone C) | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 240 | 800 | 2.4 | 1.5 | 6.4 | 4 |
| 1953 | Liquefied gas, flammable, poisonous, n.o.s. (Inhalation Hazard Zone D) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 |
| 1953 | Liquefied gas, flammable, toxic, n.o.s. | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Liquefied gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone A) | 120 | 400 | 1.2 | 0.8 | 5.1 | 3.2 | 1000 | 3000 | 8.7 | 5.4 | 11+ | 7+ |
| 1953 | Liquefied gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone B) | 30 | 100 | 0.2 | 0.2 | 1.2 | 0.8 | 420 | 1400 | 4 | 2.5 | 10.8 | 6.7 |
| 1953 | Liquefied gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone C) | 30 | 100 | 0.2 | 0.1 | 0.8 | 0.5 | 240 | 800 | 2.4 | 1.5 | 6.4 | 4 |
| 1953 | Liquefied gas, flammable, toxic, n.o.s. (Inhalation Hazard Zone D) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 90 | 300 | 0.8 | 0.5 | 2.4 | 1.5 |
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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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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