8007-56-5 Usage
Chemical Properties
Aqua regia, also known as nitrohydrochloric acid and chloroazoatic acid, is a fuming,volatile liquid that is made by mixing three parts concentrated hydrochloric acid with one part concentrated nitric acid.It is very corrosive with a suffocating odor and reacts with all metals. Aqua regia typically reacts by oxidizing the metal to a metallicion and reducing the nitric acid to nitric oxide.Its reaction with silver produces silver chloride. Aquaregia dissolves the common metallic oxides and hydroxides, the ignited oxides of tin, aluminum,chromium, and iron, and the higher oxides of lead, cobalt,nickel,and manganese. It is used for testing gold and platinum.
Uses
Metallurgy, testing metals, dissolving metals.
Definition
A mixture of concentrated
nitric acid and three to four parts
of hydrochloric acid. It dissolves all metals
including gold, hence the name. The mixture
contains chlorine and NOCl (nitrosyl
chloride).
General Description
A yellow liquid with a pungent odor prepared by mixing nitric acid and hydrochloric acid, usually in a ratio of one part of nitric acid to three or four parts of hydrochloric acid. Fumes are irritating to the eyes and mucous membranes. Corrosive to metals and to tissue. Density 14.7 lb /gal.
Reactivity Profile
Nitrohydrochloric acid is a powerful oxidizing agent and a strong acid. Reacts exothermically with chemical bases (for example: amines and inorganic hydroxides) to form salts and water. Reacts with most metals, including gold and platinum, to dissolve them with generation of toxic and/or flammable gases. Can initiate polymerization in polymerizable organic compounds. Reacts with cyanide salts to generate toxic hydrogen cyanide gas. Generates flammable and/or toxic gases with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and weak or strong reducing agents. Additional exothermic gas-generating reactions occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates (CO2).
Hazard
A powerful oxidizer, toxic, corrosive liquid.
Agricultural Uses
Aqua regia is an extremely effective oxidizing solvent,
capable of dissolving metals like gold and platinum. It is
made of a mixture of one part concentrated nitric acid and
three parts hydrochloric acid.
Check Digit Verification of cas no
The CAS Registry Mumber 8007-56-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 8,0,0 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 8007-56:
(6*8)+(5*0)+(4*0)+(3*7)+(2*5)+(1*6)=85
85 % 10 = 5
So 8007-56-5 is a valid CAS Registry Number.
InChI:InChI=1/ClH.HNO3/c;2-1(3)4/h1H;(H,2,3,4)
