An inhibitor composition contains dicyandiamide as a nitrification inhibitor, alkyl thiophosphoric triamide as a urease inhibitor, or a combination thereof, dissolved in a liquid medium comprising an organic solvent selected from, among others, one or more polar aprotic solvents, including one or more organophosphates, amine solvents, heterocyclic alcohol solvents, and mixtures thereof, is useful in making fertilizer compositions and in a method of fertilizing target plants.

The invention relates to a stabilizer for L-012 or a salt thereof, a stabilization method for L-012 or a salt thereof, coexisting with the stabilizer and L-012 or a salt thereof, and the like. The stabilizer is represented by Formula [1]: ##STR00001##
wherein p pieces of M1 each independently represent a hydrogen atom or an alkali metal atom, q pieces of R1 each independently represent a hydroxy group or a sulfonic acid group, m represents 0 or 1, p represents an integer of 1 to 3, q represents an integer of 0 to 4, Y represents a nitrogen atom or a CH group (a methine group), and Z represents an aryl group having a specific structure or a pyrazolyl group having a specific structure.

The invention relates to a stabilizer for L-012 or a salt thereof, a stabilization method for L-012 or a salt thereof, coexisting with the stabilizer and L-012 or a salt thereof, and the like. The stabilizer is represented by Formula [1]: ##STR00001##
wherein p pieces of M1 each independently represent a hydrogen atom or an alkali metal atom, q pieces of R1 each independently represent a hydroxy group or a sulfonic acid group, m represents 0 or 1, p represents an integer of 1 to 3, q represents an integer of 0 to 4, Y represents a nitrogen atom or a CH group (a methine group), and Z represents an aryl group having a specific structure or a pyrazolyl group having a specific structure.

An inhibitor composition contains alkyl thiophosphoric triamide (or a mixture of alkyl thiophosphoric triamide and dicyandiamide), dissolved in a liquid medium comprising at least one organic solvent, at least one amine stabilizer and, optionally, at least one dye and/or at least one odor masking agent, is useful in making fertilizer compositions and in a method of fertilizing target plants.

An inhibitor composition contains alkyl thiophosphoric triamide (or a mixture of alkyl thiophosphoric triamide and dicyandiamide), dissolved in a liquid medium comprising at least one organic solvent, at least one amine stabilizer and, optionally, at least one dye and/or at least one odor masking agent, is useful in making fertilizer compositions and in a method of fertilizing target plants.

Disclosed are fluorescent water-soluble water treatment polymers suitable for use in scale inhibition or suppression of corrosion in industrial water systems, the water treatment polymers especially comprising fluorescent coumarin, fluorescein, rhodamine, and Nile blue derivative monomers. Also disclosed are methods of making the monomers, methods of making the polymers, methods of inhibiting scale in an industrial water system, methods of suppressing corrosion in an industrial water system, and methods of using the polymers in coagulation and flocculation, and in cleaning applications.

Disclosed are fluorescent water-soluble water treatment polymers suitable for use in scale inhibition or suppression of corrosion in industrial water systems, the water treatment polymers especially comprising fluorescent coumarin, fluorescein, rhodamine, and Nile blue derivative monomers. Also disclosed are methods of making the monomers, methods of making the polymers, methods of inhibiting scale in an industrial water system, methods of suppressing corrosion in an industrial water system, and methods of using the polymers in coagulation and flocculation, and in cleaning applications.

A corrosion inhibitor for a soft water circulation heating and cooling system, wherein the corrosion inhibitor is pentapentanol core hyperbranched macromolecule functionalized by isothiourea and carboxyl, which has a chemical formula of C.sub.5H.sub.7O.sub.5{COC(CH.sub.3)[CH.sub.2OCOCH.sub.2CH(COOH)SC(NH)NH.sub.2].sub.2}.sub.5. The corrosion inhibitor provided by the present invention is non-phosphorus, biodegradable, non-toxic, low in cost and has good corrosion inhibition effect. Moreover, it has excellent corrosion inhibition performance for circulating heating and cooling systems using soft water as the water source, and can significantly improve the reuse rate of circulating water. The present invention also provides a preparation method of the corrosion inhibitor, which is simple, easy to obtain raw materials and easy to industrialize.

A corrosion inhibitor for a soft water circulation heating and cooling system, wherein the corrosion inhibitor is pentapentanol core hyperbranched macromolecule functionalized by isothiourea and carboxyl, which has a chemical formula of C.sub.5H.sub.7O.sub.5{COC(CH.sub.3)[CH.sub.2OCOCH.sub.2CH(COOH)SC(NH)NH.sub.2].sub.2}.sub.5. The corrosion inhibitor provided by the present invention is non-phosphorus, biodegradable, non-toxic, low in cost and has good corrosion inhibition effect. Moreover, it has excellent corrosion inhibition performance for circulating heating and cooling systems using soft water as the water source, and can significantly improve the reuse rate of circulating water. The present invention also provides a preparation method of the corrosion inhibitor, which is simple, easy to obtain raw materials and easy to industrialize.

An improved solvent system for the formulation and application of N-alkyl thiophosphoric triamide urease inhibitors. These formulations provide safety and performance benefits relative to existing alternatives and enable storage, transport and subsequent coating or blending with urea based or organic based fertilizers. These formulations are comprised primarily of environmentally friendly aprotic and protic solvents (particularly dimethyl sulfoxide and alcohols/polyols) to stabilize the urease inhibitor.