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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 3270 through 3319

UN#	Guide	Name of Material	ISO
Current as of: Oct. 2, 2011
3270	133	Nitrocellulose membrane filters
3271	127	Ethers, n.o.s.
3272	127	Esters, n.o.s.
3273	131	Nitriles, flammable, poisonous, n.o.s.
3273	131	Nitriles, flammable, toxic, n.o.s.
3274	132	Alcoholates solution, n.o.s., in alcohol
3275	131	Nitriles, poisonous, flammable, n.o.s.	Yes
3275	131	Nitriles, toxic, flammable, n.o.s.	Yes
3276	151	Nitriles, poisonous, liquid, n.o.s.	Yes
3276	151	Nitriles, poisonous, n.o.s.	Yes
3276	151	Nitriles, toxic, liquid, n.o.s.	Yes
3276	151	Nitriles, toxic, n.o.s.	Yes
3277	154	Chloroformates, poisonous, corrosive, n.o.s.
3277	154	Chloroformates, toxic, corrosive, n.o.s.
3278	151	Organophosphorus compound, poisonous, liquid, n.o.s.	Yes
3278	151	Organophosphorus compound, poisonous, n.o.s.	Yes
3278	151	Organophosphorus compound, toxic, liquid, n.o.s.	Yes
3278	151	Organophosphorus compound, toxic, n.o.s.	Yes
3279	131	Organophosphorus compound, poisonous, flammable, n.o.s.	Yes
3279	131	Organophosphorus compound, toxic, flammable, n.o.s.	Yes
3280	151	Organoarsenic compound, liquid, n.o.s.	Yes
3280	151	Organoarsenic compound, n.o.s.	Yes
3281	151	Metal carbonyls, liquid, n.o.s.	Yes
3281	151	Metal carbonyls, n.o.s.	Yes
3282	151	Organometallic compound, poisonous, liquid, n.o.s.
3282	151	Organometallic compound, poisonous, n.o.s.
3282	151	Organometallic compound, toxic, liquid, n.o.s.
3282	151	Organometallic compound, toxic, n.o.s.
3283	151	Selenium compound, n.o.s.
3283	151	Selenium compound, solid, n.o.s.
3284	151	Tellurium compound, n.o.s.
3285	151	Vanadium compound, n.o.s.
3286	131	Flammable liquid, poisonous, corrosive, n.o.s.
3286	131	Flammable liquid, toxic, corrosive, n.o.s.
3287	151	Poisonous liquid, inorganic, n.o.s.	Yes
3287	151	Poisonous liquid, inorganic, n.o.s. (Inhalation Hazard Zone A)	Yes
3287	151	Poisonous liquid, inorganic, n.o.s. (Inhalation Hazard Zone B)	Yes
3287	151	Toxic liquid, inorganic, n.o.s.	Yes
3287	151	Toxic liquid, inorganic, n.o.s. (Inhalation Hazard Zone A)	Yes
3287	151	Toxic liquid, inorganic, n.o.s. (Inhalation Hazard Zone B)	Yes
3288	151	Poisonous solid, inorganic, n.o.s.
3288	151	Toxic solid, inorganic, n.o.s.
3289	154	Poisonous liquid, corrosive, inorganic, n.o.s.	Yes
3289	154	Poisonous liquid, corrosive, inorganic, n.o.s. (Inhalation Hazard Zone A)	Yes
3289	154	Poisonous liquid, corrosive, inorganic, n.o.s. (Inhalation Hazard Zone B)	Yes
3289	154	Toxic liquid, corrosive, inorganic, n.o.s.	Yes
3289	154	Toxic liquid, corrosive, inorganic, n.o.s. (Inhalation Hazard Zone A)	Yes
3289	154	Toxic liquid, corrosive, inorganic, n.o.s. (Inhalation Hazard Zone B)	Yes
3290	154	Poisonous solid, corrosive, inorganic, n.o.s.
3290	154	Toxic solid, corrosive, inorganic, n.o.s.
3291	158	(Bio) Medical waste, n.o.s.
3291	158	Clinical waste, unspecified, n.o.s.
3291	158	Medical waste, n.o.s.
3291	158	Regulated medical waste, n.o.s.
3292	138	Batteries, containing Sodium
3292	138	Cells, containing Sodium
3293	152	Hydrazine, aqueous solution, with not more than 37% Hydrazine
3294	131	Hydrogen cyanide, solution in alcohol, with not more than 45% Hydrogen cyanide	Yes
3295	128	Hydrocarbons, liquid, n.o.s.
3296	126	Heptafluoropropane
3296	126	Refrigerant gas R-227
3297	126	Chlorotetrafluoroethane and Ethylene oxide mixture, with not more than 8.8% Ethylene oxide
3297	126	Ethylene oxide and Chlorotetrafluoroethane mixture, with not more than 8.8% Ethylene oxide
3298	126	Ethylene oxide and Pentafluoroethane mixture, with not more than 7.9% Ethylene oxide
3298	126	Pentafluoroethane and Ethylene oxide mixture, with not more than 7.9% Ethylene oxide
3299	126	Ethylene oxide and Tetrafluoroethane mixture, with not more than 5.6% Ethylene oxide
3299	126	Tetrafluoroethane and Ethylene oxide mixture, with not more than 5.6% Ethylene oxide
3300	119P	Carbon dioxide and Ethylene oxide mixture, with more than 87% Ethylene oxide	Yes
3300	119P	Ethylene oxide and Carbon dioxide mixture, with more than 87% Ethylene oxide	Yes
3301	136	Corrosive liquid, self-heating, n.o.s.
3302	152	2-Dimethylaminoethyl acrylate
3303	124	Compressed gas, poisonous, oxidizing, n.o.s.	Yes
3303	124	Compressed gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone A)	Yes
3303	124	Compressed gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone B)	Yes
3303	124	Compressed gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone C)	Yes
3303	124	Compressed gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone D)	Yes
3303	124	Compressed gas, toxic, oxidizing, n.o.s.	Yes
3303	124	Compressed gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone A)	Yes
3303	124	Compressed gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone B)	Yes
3303	124	Compressed gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone C)	Yes
3303	124	Compressed gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone D)	Yes
3304	123	Compressed gas, poisonous, corrosive, n.o.s.	Yes
3304	123	Compressed gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3304	123	Compressed gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3304	123	Compressed gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3304	123	Compressed gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3304	123	Compressed gas, toxic, corrosive, n.o.s.	Yes
3304	123	Compressed gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3304	123	Compressed gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3304	123	Compressed gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3304	123	Compressed gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3305	119	Compressed gas, poisonous, flammable, corrosive, n.o.s.	Yes
3305	119	Compressed gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3305	119	Compressed gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3305	119	Compressed gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3305	119	Compressed gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3305	119	Compressed gas, toxic, flammable, corrosive, n.o.s.	Yes
3305	119	Compressed gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3305	119	Compressed gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3305	119	Compressed gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3305	119	Compressed gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3306	124	Compressed gas, poisonous, oxidizing, corrosive, n.o.s.	Yes
3306	124	Compressed gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3306	124	Compressed gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3306	124	Compressed gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3306	124	Compressed gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3306	124	Compressed gas, toxic, oxidizing, corrosive, n.o.s.	Yes
3306	124	Compressed gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3306	124	Compressed gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3306	124	Compressed gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3306	124	Compressed gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3307	124	Liquefied gas, poisonous, oxidizing, n.o.s.	Yes
3307	124	Liquefied gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone A)	Yes
3307	124	Liquefied gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone B)	Yes
3307	124	Liquefied gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone C)	Yes
3307	124	Liquefied gas, poisonous, oxidizing, n.o.s. (Inhalation Hazard Zone D)	Yes
3307	124	Liquefied gas, toxic, oxidizing, n.o.s.	Yes
3307	124	Liquefied gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone A)	Yes
3307	124	Liquefied gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone B)	Yes
3307	124	Liquefied gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone C)	Yes
3307	124	Liquefied gas, toxic, oxidizing, n.o.s. (Inhalation Hazard Zone D)	Yes
3308	123	Liquefied gas, poisonous, corrosive, n.o.s.	Yes
3308	123	Liquefied gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3308	123	Liquefied gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3308	123	Liquefied gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3308	123	Liquefied gas, poisonous, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3308	123	Liquefied gas, toxic, corrosive, n.o.s.	Yes
3308	123	Liquefied gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3308	123	Liquefied gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3308	123	Liquefied gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3308	123	Liquefied gas, toxic, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3309	119	Liquefied gas, poisonous, flammable, corrosive, n.o.s.	Yes
3309	119	Liquefied gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3309	119	Liquefied gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3309	119	Liquefied gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3309	119	Liquefied gas, poisonous, flammable, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3309	119	Liquefied gas, toxic, flammable, corrosive, n.o.s.	Yes
3309	119	Liquefied gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3309	119	Liquefied gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3309	119	Liquefied gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3309	119	Liquefied gas, toxic, flammable, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3310	124	Liquefied gas, poisonous, oxidizing, corrosive, n.o.s.	Yes
3310	124	Liquefied gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3310	124	Liquefied gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3310	124	Liquefied gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3310	124	Liquefied gas, poisonous, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3310	124	Liquefied gas, toxic, oxidizing, corrosive, n.o.s.	Yes
3310	124	Liquefied gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone A)	Yes
3310	124	Liquefied gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone B)	Yes
3310	124	Liquefied gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone C)	Yes
3310	124	Liquefied gas, toxic, oxidizing, corrosive, n.o.s. (Inhalation Hazard Zone D)	Yes
3311	122	Gas, refrigerated liquid, oxidizing, n.o.s.
3312	115	Gas, refrigerated liquid, flammable, n.o.s.
3313	135	Organic pigments, self-heating
3314	171	Plastic molding compound
3314	171	Plastics moulding compound
3315	151	Chemical sample, poisonous
3315	151	Chemical sample, poisonous liquid
3315	151	Chemical sample, poisonous solid
3315	151	Chemical sample, toxic
3315	151	Chemical sample, toxic liquid
3315	151	Chemical sample, toxic solid
3316	171	Chemical kit
3316	171	First aid kit
3317	113	2-Amino-4,6-dinitrophenol, wetted with not less than 20% water
3318	125	Ammonia solution, with more than 50% Ammonia	Yes
3319	113	Nitroglycerin mixture with more than 2% but not more than 10% Nitroglycerin, desensitized
3319	113	Nitroglycerin mixture, desensitized, solid, n.o.s., with more than 2% but not more than 10% Nitroglycerin

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)

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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Kenneth Barbalace. Emergency Response Guidebook (ERG) - UN Numbers 3270 through 3319. EnvironmentalChemistry.com. 1995 - 2024. Accessed on-line: 4/25/2024
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