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# 1092 - 1582
| 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 | |||||||||||||
| 1092 | Acrolein, inhibited | 60 | 200 | 0.5 | 0.3 | 1.7 | 1.1 | 500 | 1600 | 4.8 | 3 | 10.2 | 6.3 |
| 1092 | Acrolein, stabilized | 60 | 200 | 0.5 | 0.3 | 1.7 | 1.1 | 500 | 1600 | 4.8 | 3 | 10.2 | 6.3 |
| 1098 | Allyl alcohol | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.2 | 0.6 | 0.4 |
| 1135 | Ethylene chlorohydrin | 30 | 100 | 0.2 | 0.1 | 0.3 | 0.2 | 90 | 300 | 0.8 | 0.5 | 1.5 | 1 |
| 1135 | Ethylene chlorohydrin | 30 | 100 | 0.2 | 0.1 | 0.3 | 0.2 | 90 | 300 | 0.8 | 0.5 | 1.5 | 1 |
| 1143 | Crotonaldehyde, inhibited | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 0.8 | 0.5 |
| 1143 | Crotonaldehyde, stabilized | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 60 | 200 | 0.4 | 0.3 | 0.8 | 0.5 |
| 1162 | Dimethyldichloro- silane (when spilled in water) | 30 | 100 | 0.2 | 0.2 | 1.1 | 0.7 | 300 | 1000 | 3 | 1.9 | 7.9 | 4.9 |
| 1163 | 1, 1-Dimethylhydrazine | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.4 | 1.2 | 0.8 |
| 1163 | Dimethylhydrazine, unsymmetrical | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.4 | 1.2 | 0.8 |
| 1182 | Ethyl chloroformate | 30 | 100 | 0.2 | 0.1 | 0.3 | 0.2 | 90 | 300 | 0.9 | 0.6 | 1.8 | 1.1 |
| 1185 | Ethyleneimine, inhibited | 30 | 100 | 0.2 | 0.2 | 0.7 | 0.5 | 180 | 600 | 1.8 | 1.2 | 4 | 2.5 |
| 1185 | Ethyleneimine, stabilized | 30 | 100 | 0.2 | 0.2 | 0.7 | 0.5 | 180 | 600 | 1.8 | 1.2 | 4 | 2.5 |
| 1196 | Ethyltrichlorosilane (when spilled in water) | 30 | 100 | 0.2 | 0.2 | 1.1 | 0.7 | 300 | 1000 | 3 | 1.9 | 7.9 | 4.9 |
| 1238 | Methyl chloroformate | 30 | 100 | 0.3 | 0.2 | 0.8 | 0.5 | 180 | 600 | 1.8 | 1.1 | 3.9 | 2.4 |
| 1238 | Methyl chloroformate | 30 | 100 | 0.3 | 0.2 | 0.8 | 0.5 | 180 | 600 | 1.8 | 1.1 | 3.9 | 2.4 |
| 1239 | Methyl chloromethyl ether | 30 | 100 | 0.3 | 0.2 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 5.6 | 3.5 |
| 1242 | Methyldichlorosilane (when spilled in water) | 30 | 100 | 0.2 | 0.1 | 0.7 | 0.4 | 180 | 600 | 1.6 | 1 | 4.8 | 3 |
| 1244 | Methylhydrazine | 30 | 100 | 0.3 | 0.2 | 0.5 | 0.3 | 150 | 500 | 1.4 | 0.9 | 2.9 | 1.8 |
| 1244 | Methylhydrazine | 30 | 100 | 0.3 | 0.2 | 0.5 | 0.3 | 150 | 500 | 1.4 | 0.9 | 2.9 | 1.8 |
| 1250 | Methyltrichlorosilane (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 150 | 500 | 1.3 | 0.8 | 4 | 2.5 |
| 1251 | Methyl vinyl ketone | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 1251 | Methyl vinyl ketone, stabilized | 150 | 500 | 1.3 | 0.8 | 3.3 | 2.1 | 1000 | 3000 | 11+ | 7+ | 11+ | 7+ |
| 1259 | Nickel carbonyl | 90 | 300 | 0.8 | 0.5 | 3.5 | 2.2 | 500 | 1600 | 4.7 | 2.9 | 9.8 | 6.1 |
| 1295 | Trichlorosilane (when spilled in water) | 30 | 100 | 0.2 | 0.1 | 1 | 0.6 | 270 | 900 | 2.5 | 1.6 | 6.5 | 4.1 |
| 1298 | Trimethylchlorosilane (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 90 | 300 | 0.8 | 0.5 | 2.7 | 1.7 |
| 1305 | Vinyltrichlorosilane (when spilled in water) | 30 | 100 | 0.2 | 0.1 | 0.7 | 0.5 | 180 | 600 | 1.8 | 1.1 | 5 | 3.1 |
| 1305 | Vinyltrichlorosilane, inhibited (when spilled in water) | 30 | 100 | 0.2 | 0.1 | 0.7 | 0.5 | 180 | 600 | 1.8 | 1.1 | 5 | 3.1 |
| 1305 | Vinyltrichlorosilane, stabilized (when spilled in water) | 30 | 100 | 0.2 | 0.1 | 0.7 | 0.5 | 180 | 600 | 1.8 | 1.1 | 5 | 3.1 |
| 1340 | Phosphorus pentasulfide, free from yellow or white Phosphorous (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 150 | 500 | 1 | 0.6 | 3.9 | 2.4 |
| 1340 | Phosphorus pentasulphide, free from yellow or white Phosphorous (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 150 | 500 | 1 | 0.6 | 3.9 | 2.4 |
| 1360 | Calcium phosphide (when spilled in water) | 60 | 200 | 0.5 | 0.3 | 2.1 | 1.3 | 800 | 2500 | 6.3 | 3.9 | 11+ | 7+ |
| 1380 | Pentaborane | 90 | 300 | 0.9 | 0.6 | 3.3 | 2.1 | 600 | 1800 | 5.3 | 3.3 | 11 | 6.9 |
| 1384 | Sodium 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 |
| 1384 | Sodium 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 |
| 1384 | Sodium 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 |
| 1397 | Aluminum phosphide (when spilled in water) | 90 | 300 | 0.6 | 0.4 | 2.7 | 1.7 | 1000 | 3000 | 9 | 5.6 | 11+ | 7+ |
| 1412 | Lithium amide (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.2 | 30 | 100 | 0.4 | 0.2 | 1.6 | 1 |
| 1419 | Magnesium aluminum phosphide (when spilled in water) | 60 | 200 | 0.6 | 0.4 | 2.5 | 1.6 | 1000 | 3000 | 7.9 | 4.9 | 11+ | 7+ |
| 1432 | Sodium phosphide (when spilled in water) | 60 | 200 | 0.4 | 0.2 | 1.7 | 1.1 | 500 | 1600 | 4.7 | 2.9 | 11+ | 7+ |
| 1510 | Tetranitromethane | 30 | 100 | 0.3 | 0.2 | 0.6 | 0.4 | 90 | 300 | 0.8 | 0.5 | 1.6 | 1 |
| 1541 | Acetone cyanohydrin, stabilized (when spilled in water) | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 240 | 800 | 0.8 | 0.5 | 3 | 1.9 |
| 1556 | MD (when used as a weapon) | 30 | 100 | 0.2 | 0.1 | 0.4 | 0.2 | 60 | 200 | 0.5 | 0.4 | 1.1 | 0.7 |
| 1556 | Methyldichloroarsine | 30 | 100 | 0.4 | 0.2 | 0.9 | 0.5 | 120 | 400 | 1.3 | 0.8 | 3.6 | 2.2 |
| 1556 | PD (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 |
| 1560 | Arsenic chloride | 30 | 100 | 0.2 | 0.2 | 0.4 | 0.2 | 90 | 300 | 0.9 | 0.6 | 1.8 | 1.1 |
| 1560 | Arsenic trichloride | 30 | 100 | 0.2 | 0.2 | 0.4 | 0.2 | 90 | 300 | 0.9 | 0.6 | 1.8 | 1.1 |
| 1569 | Bromoacetone | 30 | 100 | 0.2 | 0.1 | 0.6 | 0.4 | 90 | 300 | 0.8 | 0.5 | 2.3 | 1.5 |
| 1580 | Chloropicrin | 60 | 200 | 0.4 | 0.3 | 0.8 | 0.5 | 210 | 700 | 1.9 | 1.2 | 3.6 | 2.2 |
| 1581 | Chloropicrin and Methyl bromide mixture | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 210 | 700 | 2.1 | 1.3 | 5.9 | 3.7 |
| 1581 | Methyl bromide and Chloropicrin mixture | 30 | 100 | 0.1 | 0.1 | 0.6 | 0.4 | 210 | 700 | 2.1 | 1.3 | 5.9 | 3.7 |
| 1582 | Chloropicrin and Methyl chloride mixture | 30 | 100 | 0.1 | 0.1 | 0.4 | 0.3 | 30 | 100 | 0.4 | 0.2 | 1.7 | 1.1 |
| 1582 | Methyl chloride and Chloropicrin mixture | 30 | 100 | 0.1 | 0.1 | 0.4 | 0.3 | 30 | 100 | 0.4 | 0.2 | 1.7 | 1.1 |
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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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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