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Gold Prospecting
Alluvial Gold Prospecting
Clean concentrates with hydrochloric acid
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<blockquote data-quote="7.62marksman" data-source="post: 391363" data-attributes="member: 8005"><p>Nitric acid(HNO3), also known asaqua fortisandspirit of niter, is a highlycorrosivemineral acid.</p><p>The pure compound is colorless, but older samples tend to acquire a yellow cast due to decomposition intooxides of nitrogenand water. Most commercially available nitric acid has a concentration of 68% in water. When the solution contains more than 86% HNO3, it is referred to asfuming nitric acid. Depending on the amount ofnitrogen dioxidepresent, fuming nitric acid is further characterized aswhite fuming nitric acidat concentrations above 95%, orred fuming nitric acidat concentrations above 86%.</p><p></p><p>Nitric acid is the primary reagent used fornitration the addition of anitro group, typically to anorganic molecule. While some resultingnitro compoundsare shock- and thermally-sensitiveexplosives, a few are stable enough to be used in munitions and demolition, while others are still more stable and used as pigments in inks and dyes. Nitric acid is also commonly used as astrong oxidizing agent.</p></blockquote><p></p>
[QUOTE="7.62marksman, post: 391363, member: 8005"] Nitric acid(HNO3), also known asaqua fortisandspirit of niter, is a highlycorrosivemineral acid. The pure compound is colorless, but older samples tend to acquire a yellow cast due to decomposition intooxides of nitrogenand water. Most commercially available nitric acid has a concentration of 68% in water. When the solution contains more than 86% HNO3, it is referred to asfuming nitric acid. Depending on the amount ofnitrogen dioxidepresent, fuming nitric acid is further characterized aswhite fuming nitric acidat concentrations above 95%, orred fuming nitric acidat concentrations above 86%. Nitric acid is the primary reagent used fornitration the addition of anitro group, typically to anorganic molecule. While some resultingnitro compoundsare shock- and thermally-sensitiveexplosives, a few are stable enough to be used in munitions and demolition, while others are still more stable and used as pigments in inks and dyes. Nitric acid is also commonly used as astrong oxidizing agent. [/QUOTE]
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Gold Prospecting
Alluvial Gold Prospecting
Clean concentrates with hydrochloric acid
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