An object of the present invention is to provide an aluminum phospite having spherical shape. An aluminum phosphite of the present invention has the following formula.
Al.sub.x(OH).sub.y(HPO.sub.3).sub.3.Math.zH.sub.2O wherein: x represents 2.01 or more and 2.50 or less, y represents 0.03 or more and 1.50 or less, and z represents an integer of 0 to 4, respectively.

An object of the present invention is to provide an aluminum phospite having spherical shape. An aluminum phosphite of the present invention has the following formula.
Al.sub.x(OH).sub.y(HPO.sub.3).sub.3.Math.zH.sub.2O wherein: x represents 2.01 or more and 2.50 or less, y represents 0.03 or more and 1.50 or less, and z represents an integer of 0 to 4, respectively.

Process for the production of a compound comprising potassium phosphite comprising the steps of (a) reacting carboxylic acid of the formula R—(C(═O)OH).sub.n with phosphorous trichloride (PCl.sub.3) towards a mixture comprising phosphorous acid (H.sub.3PO.sub.3) and acid chloride of the formula R—(C(═O)Cl).sub.n; wherein R is a linear or branched alkyl or alkanediyl group with 1-20 carbon atoms and n is 1 or 2, (b) subjecting said mixture to a separation step, thereby obtaining (i) a fraction comprising crude phosphorous acid (H.sub.3PO.sub.3) and (ii) a fraction comprising acid chloride, (c) combining water, a potassium compound selected from KOH, KHCO.sub.3 and K.sub.2CO.sub.3, and the fraction comprising crude phosphorous acid, thereby forming an aqueous solution comprising potassium phosphite, and (d) removing organic compounds from said aqueous solution.

An object of the present invention is to provide an aluminum phospite having spherical shape. An aluminum phosphite of the present invention has the following formula.

Al.sub.x(OH).sub.y(HPO.sub.3).sub.3.zH.sub.2O

wherein: x represents 2.01 or more and 2.50 or less, y represents 0.03 or more and 1.50 or less, and z represents an integer of 0 to 4, respectively.

An object of the present invention is to provide an aluminum phospite having spherical shape. An aluminum phosphite of the present invention has the following formula.

Al.sub.x(OH).sub.y(HPO.sub.3).sub.3.zH.sub.2O

wherein: x represents 2.01 or more and 2.50 or less, y represents 0.03 or more and 1.50 or less, and z represents an integer of 0 to 4, respectively.

A stable metal phosphite composition made from water, phosphorous acid (H.sub.3PO.sub.3), a metal salt and a sufficient a quantity of liquid ammonium hydroxide (NH.sub.4OH) where the molar ratio of ammonium ions to metal ions is 1-4 moles ammonium to 1 mole metal. The composition can be diluted for use-application providing beneficial nutrients for plant uptake.

A stable metal phosphite composition made from water, phosphorous acid (H.sub.3PO.sub.3), a metal salt and a sufficient a quantity of liquid ammonium hydroxide (NH.sub.4OH) where the molar ratio of ammonium ions to metal ions is 1-4 moles ammonium to 1 mole metal. The composition can be diluted for use-application providing beneficial nutrients for plant uptake.

In accordance with, the present invention, there is provided an antimicrobial composition comprising an aqueous solution containing copper and/or zinc ions, optionally a hydroxide salt, and phosphorous acid. The composition, is additionally sporicidal and scleroticidal when combined with a salt of nitrous acid such as sodium nitrite. The present invention may also include chemicals containing the phosphite or phosphonaie group (PO/l which can inhibit the formation of scierotia at concentrations that are readily achievable for agricultural applications. Compositions of the present invention, inhibit, scierotia formation by fungi and may therefore be used in the field to prevent the continuation and advancement of pathogenie fungi.

A method of producing lithium difluorophosphate, the method including: a step of obtaining a first raw material mixture by mixing lithium hexafluorophosphate, at least one selected from the group consisting of an oxide of phosphorus (A) and a lithium salt of a phosphoric acid (B), and a hydrocarbon solvent having from 6 to 12 carbon atoms; a step of obtaining a second raw material mixture by removing at least a part of the hydrocarbon solvent contained in the obtained first raw material mixture; and a step of producing a crude product containing lithium difluorophosphate by reacting the second raw material mixture.

A method of producing lithium difluorophosphate, the method including: a step of obtaining a first raw material mixture by mixing lithium hexafluorophosphate, at least one selected from the group consisting of an oxide of phosphorus (A) and a lithium salt of a phosphoric acid (B), and a hydrocarbon solvent having from 6 to 12 carbon atoms; a step of obtaining a second raw material mixture by removing at least a part of the hydrocarbon solvent contained in the obtained first raw material mixture; and a step of producing a crude product containing lithium difluorophosphate by reacting the second raw material mixture.