| http://www.w3.org/ns/prov#value | - of materials such as wood, paper, fuel oil and sulphur; but self-sustaining burning reactions are not usually obtained unless more than one per cent of combustible material is present;(b) ammonium nitrate undergoes thermal decomposition when heated to temperatures above about 150??F and, under certain conditions, some of which are mentioned below, this decomposition may become dangerous; because a
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