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.

UN Numbers 2506 through 2574

UN#GuideName of MaterialISO
Current as of: Oct. 2, 2011
2506154Ammonium hydrogen sulfate
2506154Ammonium hydrogen sulphate
2507154Chloroplatinic acid, solid
2508156Molybdenum pentachloride
2509154Potassium hydrogen sulfate
2509154Potassium hydrogen sulphate
25111532-Chloropropionic acid
25111532-Chloropropionic acid, solid
25111532-Chloropropionic acid, solution
2512152Aminophenols
2513156Bromoacetyl bromide
2514130Bromobenzene
2515159Bromoform
2516151Carbon tetrabromide
25171151-Chloro-1,1-difluoroethane
2517115Chlorodifluoroethanes
2517115Difluorochloroethanes
2517115Refrigerant gas R-142b
25181531,5,9-Cyclododecatriene
2520130PCyclooctadienes
2521131PDiketene, stabilizedYes
2522153P2-Dimethylaminoethyl methacrylate
2522153PDimethylaminoethyl methacrylate
2524129Ethyl orthoformate
2525156Ethyl oxalate
2526132Furfurylamine
2527129PIsobutyl acrylate, stabilized
2528130Isobutyl isobutyrate
2529132Isobutyric acid
2530132Isobutyric anhydride
2531153PMethacrylic acid, stabilized
2533156Methyl trichloroacetate
2534119MethylchlorosilaneYes
25351324-Methylmorpholine
2535132Methylmorpholine
2535132N-Methylmorpholine
2536127Methyltetrahydrofuran
2538133Nitronaphthalene
2541128Terpinolene
2542153Tributylamine
2545135Hafnium powder, dry
2546135Titanium powder, dry
2547143Sodium superoxide
2548124Chlorine pentafluorideYes
2552151Hexafluoroacetone hydrate
2552151Hexafluoroacetone hydrate, liquid
2554130PMethylallyl chloride
2555113Nitrocellulose with water, not less than 25% water
2556113Nitrocellulose with alcohol
2556113Nitrocellulose with not less than 25% alcohol
2557133Nitrocellulose
2557133Nitrocellulose mixture, with pigment
2557133Nitrocellulose mixture, with pigment and plasticizer
2557133Nitrocellulose mixture, with plasticizer
2557133Nitrocellulose mixture, without pigment
2557133Nitrocellulose mixture, without plasticizer
2558131Epibromohydrin
25601292-Methylpentan-2-ol
25611283-Methyl-1-butene
2564153Trichloroacetic acid, solution
2565153Dicyclohexylamine
2567154Sodium pentachlorophenate
2570154Cadmium compound
2571156Alkylsulfuric acids
2571156Alkylsulphuric acids
2571156Ethylsulfuric acid
2571156Ethylsulphuric acid
2572153Phenylhydrazine
2573141Thallium chlorate
2574151Tricresyl phosphate

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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