MSC 85/26/Add.2 ANNEX 3 RESOLUTION MSC.268(85) - US Coast ...

MSC 85/26/Add.2ANNEX 3Page 77AMMONIUM NITRATE BASED FERTILIZER UN 2067DESCRIPTIONCrystals, granules or prills. Wholly or partly soluble in water. Hygroscopic.Ammonium nitrate-based fertilizers classified as UN 2067 are uniform mixtures containingammonium nitrate as the main ingredient within the following composition limits:Notes:.1 not less than 90% ammonium nitrate with not more than 0.2% totalcombustible/organic material calculated as carbon and with added matter, if any,which is inorganic and inert towards ammonium nitrate; or.2 less than 90% but more than 70% ammonium nitrate with other inorganicmaterials or more than 80% but less than 90% ammonium nitrate mixed withcalcium carbonate and/or dolomite and not more than 0.4% totalcombustible/organic material calculated as carbon; or.3 ammonium nitrate-based fertilizers containing mixtures of ammonium nitrate andammonium sulphate with more than 45% but less than 70% ammonium nitrateand not more than 0.4% total combustible organic material calculated as carbonsuch that the sum of the percentage compositions of ammonium nitrate andammonium sulphate exceeds 70%.1. All nitrate ions for which there is present in the mixture a molecular equivalent ofammonium ions should be calculated as ammonium nitrate.2. The transport of ammonium nitrate materials which are liable to self-heating sufficient toinitiate decomposition is prohibited.3. This entry may only be used for substances that do not exhibit explosive properties ofclass 1 when tested in accordance to Test Series 1 and 2 of class 1 (see UN Manual ofTests and Criteria, part I).CHARACTERISTICSANGLE OF REPOSE BULK DENSITY (kg/m 3 ) STOWAGE FACTOR (m 3 /t)27° to 42° 900 to 1200 0.83 to 1.11SIZE CLASS GROUP1 to 5 mm 5.1 BHAZARDSupports combustion. A major fire aboard a ship carrying these substances may involve a risk ofexplosion in the event of contamination (e.g., by fuel oil) or strong confinement. An adjacentdetonation may involve a risk of explosion.If heated strongly decomposes, risk of toxic fumes and gases which support combustion, in thecargo space and on deck.Fertilizer dust might be irritating to skin and mucous membranes.This cargo is hygroscopic and will cake if wet.I:\MSC\85\26-Add-2.doc