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.
| 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 Current as of: Oct. 2, 2011 | |||||||||||||
| 1754 | Chlorosulfonic acid | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.3 | 0.2 | 0.4 | 0.3 |
| 1754 | Chlorosulfonic acid | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 60 | 200 | 1 | 0.6 | 2.9 | 1.8 |
| 1754 | Chlorosulfonic acid and Sulfur trioxide mixture | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1754 | Chlorosulfonic acid and Sulfur trioxide mixture | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 60 | 200 | 1 | 0.6 | 2.9 | 1.8 |
| 1754 | Chlorosulphonic acid | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.3 | 0.2 | 0.4 | 0.3 |
| 1754 | Chlorosulphonic acid | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 60 | 200 | 1 | 0.6 | 2.9 | 1.8 |
| 1754 | Chlorosulphonic acid and Sulphur trioxide mixture | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1754 | Chlorosulphonic acid and Sulphur trioxide mixture | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 60 | 200 | 1 | 0.6 | 2.9 | 1.8 |
| 1754 | Sulfur trioxide and Chlorosulfonic acid mixture | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1754 | Sulfur trioxide and Chlorosulfonic acid mixture | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 60 | 200 | 1 | 0.6 | 2.9 | 1.8 |
| 1754 | Sulphur trioxide and Chlorosulphonic acid mixture | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1754 | Sulphur trioxide and Chlorosulphonic acid mixture | 30 | 100 | 0.1 | 0.1 | 0.5 | 0.3 | 60 | 200 | 1 | 0.6 | 2.9 | 1.8 |
| 1758 | Chromium oxychloride | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.2 | 0.2 | 0.8 | 0.5 |
| 1762 | Cyclohexenyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 30 | 100 | 0.4 | 0.3 | 1.4 | 0.9 |
| 1763 | Cyclohexyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 30 | 100 | 0.4 | 0.3 | 1.4 | 0.9 |
| 1765 | Dichloroacetyl chloride | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.3 | 0.2 | 1 | 0.6 |
| 1766 | Dichlorophenyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.2 | 60 | 200 | 0.7 | 0.4 | 2.2 | 1.4 |
| 1767 | Diethyldichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.4 | 0.2 | 1.1 | 0.7 |
| 1769 | Diphenyldichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.2 | 0.2 | 0.6 | 0.4 |
| 1771 | Dodecyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.4 | 0.9 |
| 1777 | Fluorosulfonic acid | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.2 | 0.2 | 0.8 | 0.5 |
| 1777 | Fluorosulphonic acid | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.2 | 0.2 | 0.8 | 0.5 |
| 1781 | Hexadecyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.2 | 0.2 | 0.7 | 0.4 |
| 1784 | Hexyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.5 | 0.9 |
| 1799 | Nonyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.6 | 1 |
| 1800 | Octadecyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 30 | 100 | 0.4 | 0.3 | 1.4 | 0.9 |
| 1801 | Octyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.6 | 1 |
| 1804 | Phenyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.6 | 1 |
| 1806 | Phosphorus pentachloride | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.2 | 30 | 100 | 0.4 | 0.3 | 1.6 | 1 |
| 1808 | Phosphorus tribromide | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 60 | 200 | 0.6 | 0.4 | 2 | 1.2 |
| 1809 | Phosphorus trichloride | 30 | 100 | 0.2 | 0.2 | 0.7 | 0.4 | 150 | 500 | 1.5 | 0.9 | 3 | 1.9 |
| 1809 | Phosphorus trichloride | 30 | 100 | 0.2 | 0.2 | 0.7 | 0.4 | 150 | 500 | 1.5 | 0.9 | 3 | 1.9 |
| 1809 | Phosphorus trichloride | 30 | 100 | 0.1 | 0.1 | 0.4 | 0.2 | 60 | 200 | 0.8 | 0.5 | 2.8 | 1.7 |
| 1809 | Phosphorus trichloride | 30 | 100 | 0.1 | 0.1 | 0.4 | 0.2 | 60 | 200 | 0.8 | 0.5 | 2.8 | 1.7 |
| 1810 | Phosphorus oxychloride | 30 | 100 | 0.3 | 0.2 | 0.5 | 0.4 | 100 | 300 | 1.1 | 0.7 | 2 | 1.3 |
| 1810 | Phosphorus oxychloride | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 60 | 200 | 0.7 | 0.5 | 2.3 | 1.4 |
| 1815 | Propionyl chloride | 30 | 100 | 0.1 | 0.1 | 0.1 | 0.1 | 30 | 100 | 0.3 | 0.2 | 0.8 | 0.5 |
| 1816 | Propyltrichlorosilane | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.2 | 60 | 200 | 0.6 | 0.4 | 2 | 1.3 |
| 1818 | Silicon tetrachloride | 30 | 100 | 0.1 | 0.1 | 0.3 | 0.2 | 100 | 300 | 0.9 | 0.6 | 2.9 | 1.8 |
| 1828 | Sulfur chlorides | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.7 | 0.5 | 1.2 | 0.8 |
| 1828 | Sulfur chlorides | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 30 | 100 | 0.4 | 0.2 | 1.2 | 0.8 |
| 1828 | Sulphur chlorides | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.7 | 0.5 | 1.2 | 0.8 |
| 1828 | Sulphur chlorides | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 30 | 100 | 0.4 | 0.2 | 1.2 | 0.8 |
| 1829 | Sulfur trioxide, inhibited | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1829 | Sulfur trioxide, stabilized | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1829 | Sulfur trioxide, uninhibited | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1829 | Sulphur trioxide, inhibited | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1829 | Sulphur trioxide, stabilized | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1829 | Sulphur trioxide, uninhibited | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1831 | Sulfuric acid, fuming | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1831 | Sulfuric acid, fuming, with not less than 30% free Sulfur trioxide | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1831 | Sulphuric acid, fuming | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1831 | Sulphuric acid, fuming, with not less than 30% free Sulphur trioxide | 60 | 200 | 0.4 | 0.2 | 1 | 0.6 | 300 | 1000 | 2.9 | 1.8 | 5.7 | 3.6 |
| 1834 | Sulfuryl chloride | 30 | 100 | 0.2 | 0.1 | 0.5 | 0.4 | 100 | 300 | 1 | 0.6 | 2.1 | 1.3 |
| 1834 | Sulfuryl chloride | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.8 | 1.2 |
| 1834 | Sulphuryl chloride | 30 | 100 | 0.2 | 0.1 | 0.5 | 0.4 | 100 | 300 | 1 | 0.6 | 2.1 | 1.3 |
| 1834 | Sulphuryl chloride | 30 | 100 | 0.2 | 0.1 | 0.5 | 0.4 | 100 | 300 | 1 | 0.6 | 2.1 | 1.3 |
| 1834 | Sulphuryl chloride | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.8 | 1.2 |
| 1834 | Sulphuryl chloride | 30 | 100 | 0.1 | 0.1 | 0.2 | 0.1 | 60 | 200 | 0.5 | 0.3 | 1.8 | 1.2 |
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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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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