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Red Fuming Nitric Acid (RFNA)
 * Background
 * Description: Red (Depending on the type of nitric acid, could also be colorless or yellow)
 * Contains dissolved nitrogen dioxide, Very concentrated
 * Found at room temperature
 * Suffocating Odor
 * Properties: Increases flammability of combustible materials.
 * Reacts with water to give off heat
 * Uses: oxidizer for liquid-propellant rocket fuels\

The dissolved nitrogen dioxide is very concentrated and can be found at room temperature. Red fuming nitric acid gives off a suffocating odor. it increases the flammability of combustible materials and is highly exothermic when reacted with water.


 * Dangers
 * Skin and metal corrosion
 * serious eye damage, if in contact with eyes, rinse immediately and contact medical services.
 * toxic
 * oral
 * inhale
 * dermal, may cause severe burns.
 * Experiments done
 * Finding Hydrofluoric Acid Content
 * RFNA usually has about .6% of Hydrofluoric acid
 * Standard solution used contained 12% Nitrogen Dioxide
 * Estimated about .5% hydrogen Fluoride
 * Finding Water content
 * Looked at RFNA containing 80% HNO3, 8-20% NO2, and the rest
 * (See Table I and II in reference 3)
 * Different H2O % for samples with (2.4-4.2%)the hydrofluoric acid without (0.1-5.0%) the hydrofluoric acid
 * Also looked into water content taking to account the metal impurities from corrosion (2.6-8.8%)
 * Finding out the corrosion of metals in Substance
 * (See Table II in reference 2)
 * Stainless steels- Good resistance to corrosion
 * Aluminum alloy- More attacked but the rates of corrosion were not high enough to say that they are not usable.
 * Chromium- slightly corroded
 * Tin, gold, tantalum- very good resistance to corrosion
 * See Also
 * Nitric Acid
 * White Fuming Nitric Acid
 * References
 * 1.http://pubs.acs.org/doi/pdf/10.1021/ac60138a025
 * 2.http://pubs.acs.org/doi/pdf/10.1021/ie50466a021
 * 3.http://pubs.acs.org/doi/pdf/10.1021/ac60205a055