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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.

ERG Menu

UN Numbers 2576 through 2645

UN#GuideName of MaterialISO
Current as of: Oct. 2, 2011
2576137Phosphorus oxybromide, molten
2577156Phenylacetyl chloride
2578157Phosphorus trioxide
2579153Piperazine
2580154Aluminum bromide, solution
2581154Aluminum chloride, solution
2582154Ferric chloride, solution
2583153Alkyl sulfonic acids, solid, with more than 5% free Sulfuric acid
2583153Alkyl sulphonic acids, solid, with more than 5% free Sulphuric acid
2583153Aryl sulfonic acids, solid, with more than 5% free Sulfuric acid
2583153Aryl sulphonic acids, solid, with more than 5% free Sulphuric acid
2584153Alkyl sulfonic acids, liquid, with more than 5% free Sulfuric acid
2584153Alkyl sulphonic acids, liquid, with more than 5% free Sulphuric acid
2584153Aryl sulfonic acids, liquid, with more than 5% free Sulfuric acid
2584153Aryl sulphonic acids, liquid, with more than 5% free Sulphuric acid
2584153Dodecylbenzenesulfonic acid
2584153Dodecylbenzenesulphonic acid
2585153Alkyl sulfonic acids, solid, with not more than 5% free Sulfuric acid
2585153Alkyl sulphonic acids, solid, with not more than 5% free Sulphuric acid
2585153Aryl sulfonic acids, solid, with not more than 5% free Sulfuric acid
2585153Aryl sulphonic acids, solid, with not more than 5% free Sulphuric acid
2586153Alkyl sulfonic acids, liquid, with not more than 5% free Sulfuric acid
2586153Alkyl sulphonic acids, liquid, with not more than 5% free Sulphuric acid
2586153Aryl sulfonic acids, liquid, with not more than 5% free Sulfuric acid
2586153Aryl sulphonic acids, liquid, with not more than 5% free Sulphuric acid
2587153Benzoquinone
2588151Pesticide, solid, poisonous
2588151Pesticide, solid, poisonous, n.o.s.
2588151Pesticide, solid, toxic, n.o.s.
2589155Vinyl chloroacetate
2590171Asbestos, white
2590171White asbestos
2591120Xenon, refrigerated liquid (cryogenic liquid)
2599126Chlorotrifluoromethane and Trifluoromethane azeotropic mixture with approximately 60% Chlorotrifluoromethane
2599126Refrigerant gas R-13 and Refrigerant gas R-23 azeotropic mixture with 60% Refrigerant gas R-13
2599126Refrigerant gas R-23 and Refrigerant gas R-13 azeotropic mixture with 60% Refrigerant gas R-13
2599126Refrigerant gas R-503 (azeotropic mixture of Refrigerant gas R-13 and Refrigerant gas R-23 with approximately 60% Refrigerant gas R-13)
2599126Trifluoromethane and Chlorotrifluoromethane azeotropic mixture with approximately 60% Chlorotrifluoromethane
2600119Carbon monoxide and Hydrogen mixtureYes
2600119Carbon monoxide and Hydrogen mixture, compressedYes
2600119Hydrogen and Carbon monoxide mixtureYes
2600119Hydrogen and Carbon monoxide mixture, compressedYes
2601115Cyclobutane
2602126Dichlorodifluoromethane and Difluoroethane azeotropic mixture with approximately 74% Dichlorodifluoromethane
2602126Difluoroethane and Dichlorodifluoromethane azeotropic mixture with approximately 74% Dichlorodifluoromethane
2602126Refrigerant gas R-12 and Refrigerant gas R-152a azeotropic mixture with 74% Refrigerant gas R-12
2602126Refrigerant gas R-152a and Refrigerant gas R-12 azeotropic mixture with 74% Refrigerant gas R-12
2602126Refrigerant gas R-500 (azeotropic mixture of Refrigerant gas R-12 and Refrigerant gas R-152a with approximately 74% Refrigerant gas R-12)
2603131Cycloheptatriene
2604132Boron trifluoride diethyl etherate
2605155Methoxymethyl isocyanateYes
2606155Methyl orthosilicateYes
2606155Methyl orthosilicateYes
2607129PAcrolein dimer, stabilized
2608129Nitropropanes
2609156Triallyl borate
2610132Triallylamine
2611131Propylene chlorohydrin
2612127Methyl propyl ether
2614129Methallyl alcohol
2615127Ethyl propyl ether
2616129Triisopropyl borate
2617129Methylcyclohexanols
2618130PVinyltoluenes, stabilized
2619132Benzyldimethylamine
2620130Amyl butyrates
2621127Acetyl methyl carbinol
2622131PGlycidaldehyde
2623133Firelighters, solid, with flammable liquid
2624138Magnesium silicide
2626140Chloric acid, aqueous solution, with not more than 10% Chloric acid
2627140Nitrites, inorganic, n.o.s.
2628151Potassium fluoroacetate
2629151Sodium fluoroacetate
2630151Selenates
2630151Selenates
2630151Selenites
2630151Selenites
2630151Sodium selenite
2630151Sodium selenite
2642154Fluoroacetic acid
2643155Methyl bromoacetate
2644151Methyl iodideYes
2645153Phenacyl bromide

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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