Main Page | See live article | Alphabetical index Properties General Name Ammonium perchlorate Chemical formula NH4ClO4 Appearance White solid Physical Formula weight 117.5 amu Melting point Decomposes at 513 K (240 °C) Density 2.0 ×103 kg/m3 Crystal structure ? Solubility ? Thermochemistry ΔfH0solid -295.77 kJ/mol S0solid 184.18 J/mol·K Safety Ingestion GI irritation can occur. Inhalation May cause respiratory tract irritation or pulmonary edema. Skin May cause irritation. Eyes Irritation, chance of more serious problems. More info Hazardous Chemical Database SI units were used where possible. Unless otherwise stated, standard conditions were used. Disclaimer and references Ammonium perchlorate is a chemical compound with the formula NH4ClO4. It is the salt of perchloric acid. Like other perchlorates, it is a powerful oxidizer. This salt is used as an explosive in mines, due to the low temperature elevation that follows its decomposition. It is produced by reaction between ammonia and perchloric acid, or by double decomposition between an ammonia salt and sodium perchlorate. It crystallises in colorless rhomboedres with a relative density of 1,95. It is the least soluble of all ammonia salts with 20 g in 100g water at 0°C. It decomposes before fusion.\n This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.