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Aqua regia is organic acid that is a mixture of concentrated hydrochloric and concentrated nitric acid whose appearance is red, yellow or gold fuming liquid. This inorganic acid is named aqua regia because it can dissolve the so-called royal and noble metals, therefore to develop pressure in the sealed bottles and for cleaning of the silver, gold and platinum this inorganic compound is effective. This inorganic chemical is one of the few reagents that are able to dissolve gold and platinum as a result different laboratory use this inorganic chemical for different type of experiments. Research institute related refining the royal metals uses this inorganic acid for the experiment. Aqua regia is used in etching and in certain analytical procedures. Without the help of this chemical material no acid can dissolve the royal metal and are very safe to apply. Aqua regia is an excellent solvent for most base metal sulphates, oxides and carbonates and also provides a partial digestion for the rock forming elements.
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