For coloring foods, nutritional supplements, cosmetic or pharmaceutical products, the invention provides a dye, which contains at least one pigment in the form of a water-insoluble sulfate, carbonate, or phosphate of at least one alkaline earth metal, which is selected from the group consisting of calcium sulfate, magnesium phosphate, calcium phosphate, and magnesium carbonate.

Disclosed is a method of obtaining a protein-associated nanostructured complex (MRB-CFI-1) by chemical synthesis and antitumor use. The main use is in treating cancer, both in animals and humans. The complex has singular antitumor activity, and can potentially be used as a substitute and/or act as an adjuvant for other commercial antineoplastic drugs.

A hydrogel comprising a colloidal suspension of M.sup.I.sub.XM.sup.II.sub.YP.sub.Z two-dimensional nanocrystals in water, wherein M.sup.I is Na.sup.+ and/or Li.sup.+, M.sup.II is Mg.sup.2+ or a mixture of Mg.sup.2+ with one or more Ni.sup.2+, Zn.sup.2+, Cu.sup.2+, Fe.sup.2+ and/or Mn.sup.2+, P is a mixture of dibasic phosphate ions (HPO.sub.4.sup.2−) and tribasic phosphate ions (PO.sub.4.sup.3−). X ranges from about 0.43 to about 0.63, Y ranges from about 0.10 to about 0.18, Z ranges from about 0.29 to about 0.48, X, Y, Z being mole fractions, is provided.

A hydrogel comprising a colloidal suspension of M.sup.I.sub.XM.sup.II.sub.YP.sub.Z two-dimensional nanocrystals in water, wherein M.sup.I is Na.sup.+ and/or Li.sup.+, M.sup.II is Mg.sup.2+ or a mixture of Mg.sup.2+ with one or more Ni.sup.2+, Zn.sup.2+, Cu.sup.2+, Fe.sup.2+ and/or Mn.sup.2+, P is a mixture of dibasic phosphate ions (HPO.sub.4.sup.2−) and tribasic phosphate ions (PO.sub.4.sup.3−). X ranges from about 0.43 to about 0.63, Y ranges from about 0.10 to about 0.18, Z ranges from about 0.29 to about 0.48, X, Y, Z being mole fractions, is provided.

Disclosed is a method of obtaining an inorganic nanostructured complex (CFI-1) by chemical synthesis and antitumor use. The main use is in treating cancer, both in animals and humans. The complex has singular antitumor activity, and can potentially be used as a substitute and/or act as an adjuvant for other commercial antineoplastic drugs.

Disclosed is a method for treating cancer in a subject by administering to the subject a compound selected from NH.sub.4MgPO.sub.4×6H.sub.2O, (NH.sub.4)2MgH.sub.2(PO.sub.4).sub.2×4H.sub.2O, (NH.sub.4)2Mg.sub.3(HPO.sub.4).sub.4×8H.sub.2O and NH.sub.4MgPO.sub.4×H.sub.2O associated or not to hydrolytic enzymes, which are known to have immunomodulatory activities.

A solid electrolyte according to the present disclosure has a composition represented by Mg.sub.xZr.sub.y(PO.sub.z).sub.2 (0<x≤3.5, 0≤y<1.5, and 3≤z≤4.25), and includes an amorphous part. The composition may be represented by Mg.sub.x(PO.sub.z).sub.2 (3≤x≤3.5 and 3≤z≤4.25). The composition may be represented by Mg.sub.xZr.sub.y(PO.sub.z).sub.2 (0<x<3.5, 0<y<1.5, and 3≤z≤4.25).

A renewable magnesium removing agent and its use in a preparation of a low-magnesium lithium-rich brine are provided. The magnesium removing agent includes a magnesium phosphate double salt of an alkali metal or ammonium. A regeneration of the magnesium removing agent is realized by adding the magnesium removing agent into Mg.sup.2+-containing chloride salt solution, wherein Mg.sup.2+ in the chloride salt solution and the magnesium removing agent are subjected to a magnesium removing reaction to form a solid-phase reaction product and carrying out a solid-liquid separation on an obtained mixed reaction product after the magnesium removing reaction is ended to separate the solid-phase material comprising a magnesium phosphate hydrate and then separating out a chlorine salt of the alkali metal or the ammonium from a remaining liquid-phase material, and finally carrying out a regeneration reaction on the magnesium phosphate hydrate and the chlorine salt of the alkali metal or the ammonium.

A renewable magnesium removing agent and its use in a preparation of a low-magnesium lithium-rich brine are provided. The magnesium removing agent includes a magnesium phosphate double salt of an alkali metal or ammonium. A regeneration of the magnesium removing agent is realized by adding the magnesium removing agent into Mg.sup.2+-containing chloride salt solution, wherein Mg.sup.2+ in the chloride salt solution and the magnesium removing agent are subjected to a magnesium removing reaction to form a solid-phase reaction product and carrying out a solid-liquid separation on an obtained mixed reaction product after the magnesium removing reaction is ended to separate the solid-phase material comprising a magnesium phosphate hydrate and then separating out a chlorine salt of the alkali metal or the ammonium from a remaining liquid-phase material, and finally carrying out a regeneration reaction on the magnesium phosphate hydrate and the chlorine salt of the alkali metal or the ammonium.

An anode active material for batteries includes anode active substance particles. The anode active substance particles include silicon oxide compound particles including nano-silicon grains and lithium; and a composite oxide coating layer partially or entirely covering the silicon oxide compound particles and containing a composite oxide of a metal M and phosphorus, where the metal M includes lithium and a non-lithium metal. The anode active material has good water tolerance. A battery prepared from the anode active material has at least the advantages of good cycle performance, high energy density, high coulombic efficiency, good rate performance, and the like.