The invention relates to the field of inorganic chemistry and presents a new class of acids and their salts, in particular, a class of halogenoid acids with a general formula H.sub.mXO.sub.(V+m-n)/2Ha.sub.n, where X is a non-metal of group 4, 5 or 6 of the periodic table of elements, V is its valence in the compound, Ha is a halogen, which may find application in chemical treatment of materials, as a part of fertilizers or insecticides in agriculture, in medicine, etc. In particular, the object of the invention is a fluoro-nitric acid of the formula H.sub.2NO.sub.3F with the structural formula ##STR00001## In particular, the object of the invention is a chloro-nitric acid of the formula H.sub.2NO.sub.3Cl with the structural formula ##STR00002## In particular, the object of the invention is a sulfuro-chlorous acid of the formula H.sub.2SO.sub.3Cl.sub.2 with the structural formula ##STR00003##

There is provided a method for producing trifluoroamine oxide. The method includes a step of preparing an intermediate product by simultaneously providing and reacting nitrogen trifluoride and nitrous oxide under the presence of a SbF.sub.5 reaction catalyst; and a step of producing trifluoroamine oxide by reacting the intermediate product with potassium fluoride. The step of reacting the intermediate product with potassium fluoride is performed under atmospheric pressure and room temperature.

The present invention relates to a preparation method of trifluoroamine oxide which comprises the steps of producing an intermediate product by reacting nitrogen trifluoride and nitrous oxide in the presence of a reaction catalyst wherein the unreacted gas containing nitrogen (N.sub.2) produced in the course of the reaction is removed and instead nitrogen trifluoride and nitrous oxide are injected additionally; and producing trifluoroamine oxide by reacting the intermediate product with sodium fluoride.

The present invention relates to a preparation method of trifluoroamine oxide comprising the steps of producing an intermediate product by reacting nitrogen trifluoride and nitrous oxide in the presence of a reaction catalyst; and producing trifluoroamine oxide by reacting the intermediate product with sodium fluoride in vacuum condition up to 100 mmHg.

The present invention relates to a preparation method of trifluoroamine oxide comprising the steps of producing an intermediate product by reacting nitrogen trifluoride and nitrous oxide in the presence of a reaction catalyst; and producing trifluoroamine oxide by reacting the intermediate product with sodium fluoride in vacuum condition up to 100 mmHg.

The invention relates to the field of inorganic chemistry and presents a new class of acids and their salts, in particular, a class of halogenoid acids with a general formula H.sub.mXO.sub.(v+mn)/2Ha.sub.n, where X is a non-metal of group 4, 5 or 6 of the periodic table of elements, V is its valence m the compound, Ha is a halogen, which may find application in chemical treatment of materials, as a part of fertilizers or insecticides in agriculture, in medicine, etc. In particular, the object of the invention is a fluoro-nitric acid of the formula H.sub.2NO.sub.3F with the structural formula

##STR00001##

In particular, the object of the invention is a chloro-nitric acid of the formula H.sub.2NO.sub.3Cl with the structural formula

##STR00002##

In particular, the object of the invention is a sulfuro-chlorous acid of the formula H.sub.2SO.sub.3Cl.sub.2 with the structural formula

##STR00003##

An apparatus for producing trifluoramine oxide includes: a reactor in which a photochemical reaction for generating trifluoramine oxide by using vapor-phase FNO and F.sub.2 as starting materials is performed; an ultraviolet irradiation means for irradiating ultraviolet rays having a peak wavelength in a wavelength band of 300 nm to 400 nm into the reactor; and a separation and collection means which is in vapor communication with the reactor, separating and collecting generated trifluoramine oxide from reaction products generated in the reactor. The ultraviolet rays are such that an intensity of rays having a wavelength band of less than 300 nm is less than 5% of an intensity of rays having a wavelength band of 300 nm to 400 nm.