Search results
Results from the WOW.Com Content Network
A substance is pyrophoric (from Ancient Greek: πυροφόρος, pyrophoros, 'fire-bearing') if it ignites spontaneously in air at or below 54 °C (129 °F) (for gases) or within 5 minutes after coming into contact with air (for liquids and solids). [1] Examples are organolithium compounds and triethylborane.
The GHS transport pictograms are the same as those recommended in the UN Recommendations on the Transport of Dangerous Goods, widely implemented in national regulations such as the U.S. Federal Hazardous Materials Transportation Act (49 U.S.C. 5101–5128) and D.O.T. regulations at 49 C.F.R. 100–185.
Pyrophoric liquids are liable to ignite after 5 minutes of coming in contact with air. Pyrophoric solids follow the same criteria as pyrophoric liquids. Self-heating substances, which differ from self-reactive substances in that they will only ignite in large quantities (kilograms) and after a long duration of time (hours or days).
The NA numbers (North American Numbers are assigned by the United States Department of Transportation, supplementing the larger set of UN numbers, for identifying hazardous materials. NA numbers largely duplicate UN numbers, however a selection of additional numbers are provided for materials that are not covered by UN numbers as a hazardous ...
The packing group of Division 6.1 materials shall be as assigned in Column 5 of the 49CFR 172.101 Table. When the 49CFR 172.101 Table provides more than one packing group or hazard zone for a hazardous material, the packing group and hazard zone shall be determined by applying the following criteria: 1.
Category II flammable liquids are those with boiling points > 35 °C/95 °F and flash points < 23 °C/73 °F [1] [5] Category III flammable liquids are those with flash points > 23 °C/73 °F and ≤ 60 °C/140 °F [1] [5] Category IV flammable liquids are those with flash points > 60 °C/140 °F and ≤ 93 °C/199.4 °F [1] [5]
Organic peroxide type D, liquid UN 3106: 5.2: Organic peroxide type D, solid UN 3107: 5.2: Organic peroxide type E, liquid UN 3108: 5.2: Organic peroxide type E, solid UN 3109: 5.2: Organic peroxide type F, liquid UN 3110: 5.2: Organic peroxide type F, solid UN 3111: 5.2: Organic peroxide type B, liquid, temperature controlled UN 3112: 5.2 ...
NFPA 704 safety squares on containers of ethyl alcohol and acetone. "NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association.