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(61) Organic phosphorus was turned into phosphoric acid by oxidation in dense vitriol and nitric acid.

(62) Aquatint: It is an etching process on copper or steel by means of nitric acid.

(63) Ahab's alloy is a high ni high molybdenum alloys, in nitric acid chromic acid, sulfuric acid etc oxidizing acids has good corrosion resistance.

(64) Contact with strong oxidizing acids such as nitric acid, chromic acid and so on, due to strong oxidation products will cause brittle hair, discoloration, early damage.

(65) Conclusion Rapid decalcification with microwave and nitric acid at low temperature could get very satisfactory staining results within relatively short time.

(66) Adding concentrated nitric acid, copper dissolves to form a blue solution.

(67) Also free from nitric acid and phosphoric acid, to prevent algae breeding.

(68) Thus the relations between densities of the solution and concentrations of uranyl nitrate and nitric acid are provided for.

(69) Lily powder was pre - treated by nitric acid and perchloric acid before determination.

(70) In this article , the synthesis ofp - tert - acid by using nitric acid as the oxidizing agent was introduced.

(71) In the concentrated nitric acid production, the hazard and control of impurity in the magnesium nitrate solution are introduced.

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(72) It is widely used as solvent for lubricating oil refining , nitric acid fibrin , vinyl resin and other resin synthesis in dope, oil refining, dyestuff, medicine industry .

(73) Nitracidium and hydronitracidium nitrastes are present in concentrated nitric acid.

(74) Main products of the Joint Chemical concentrated nitric acid and ammonium nitrate.

(75) Comparing the solubility of scheelite and wolframite in dil. nitric acid with those in oxalic acid or in hydrochloride acid-citric acid has been carried out.

(76) The test sample was treated by nitric acid and hydrogen fluoride acid.

(77) Organo mineral compound fertilizers are digested with sulfuric acid hydrogen peroxide and nitric acid perchloric acid, respectively, and then their total potassium content is determined.

(78) A new process that industrial nitric acid reacts with iron chippings and shavings to produce ferrous nitrate solution is presented.

(79) These covalent nitrites are constitutional isomers of the nitro compounds, nitric acid derivatives (R-NO2), in which the bonding is from carbon to nitrogen.

(80) Baesd on theoretical analysis and test, the reason that nitrogen tetroxide has been measured in- accurately in red fuming nitric acid as missile propellant is found out.

(81) The results show that the potassium bichromate plus nitric acid or glacial acetic acid has the best anti-corrosion effect.

(82) The concentration change of nitric acid was detected with a conductivity detector probe in water phase and the phenomena of the interface were recorded by video.

(83) To prevent esophagus cancer, besides do not eat contain carcinogenic substance outside the food of amine of methylic benzyl nitric acid, still ought to complement vitamin B2.

(84) The precipitatation process of rare earth in nitric acid was investigated and the relationship between supersaturation and mean particle size of rare earth oxalate was obtained.

(85) Supported heteropoly acid catalysts give fairly high catalytic activity and selectivity on vapor-phase nitration of benzene and diluted nitric acid and were characterized by ESR.

(86) Methods:Isoquinoline as material was oxidized with fuming nitric acid instead of the reported concentrated nitric acid to synthesize target compound.

(87) Separation of the two components is accomplished by dissolving the frit in dilute nitric acid.

(88) Undissolved in water or ethanol, easily dissolves in inorganic acid(nitric acid, hydrochloric acid), acetic acid and ammonium chloride solution, slightly dissolves in alkali metal carbonate solution.

(89) As the spectroscopic analysis has not been reported and the corro-sioncolor test with nitric acid is not very reliable. This method has resolved the problems of monel alloy for alkanisation units.