Mandatory application: this cargo carrying UN No. 2067 is described as uniform mixtures containing ammonium nitrate as the main ingredient within the following composition limits: (.1) not less than 90% ammonium nitrate and not more than 0.2% total combustible/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 inorganic materials or more than 80% but less than 90% ammonium nitrate mixed with calcium carbonate and/or dolomite and/or mineral calcium sulphate and not more than 0.4% total combustible/organic material calculated as carbon; or (.3) ammonium nitrate-based fertilisers containing mixtures of ammonium nitrate and ammonium sulphate, with more than 45% but less than 70% ammonium nitrate and containing not more than 0.4% total combustible organic material calculated as carbon such that the sum of the percentage compositions of ammonium nitrate and ammonium sulphate exceeds 70%.
Non-mandatory description : cargo in crystals, granules or prills that are wholly or partly soluble in water. Also hygroscopic. Bulk density: 900 -1,200 kg/m3.
Notes: (1) All nitrate ions where there is a molecular equivalent of ammonium ions present in the mixture, should be calculated as ammonium nitrate. (2) Transport of ammonium nitrate materials that are liable to self-heating sufficient to trigger decomposition is prohibited. (3) This cargo entry is only applicable for substances that do not exhibit properties of Class 1 when tested in accordance to Test Series 1 and 2 of Class 1 (see UN manual of Tests and Criteria, part 1).
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