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.

A liquid fertilizer additive solution composition and methods of making thereof.

Reaction products and methods for making and using such reaction products are provided. For example, a reaction product comprising an adduct formed from urea, formaldehyde, and a urease inhibitor is described, which can be provided in various forms. For example, such a reaction product can be in the form of a solid or solution. Such a reaction product can also be combined with one or more additional components, including but not limited to, additional urease inhibitor and/or a nitrogen-based fertilizer composition.

Provided herein is a process for isolating at least one (thio)phosphoric acid derivative, which has a boiling point of at least 70 C., from a product mixture including the at least one (thio)phosphoric acid derivative, at least one salt selected from ammonium salts and alkali metal chlorides, at least one polar solvent selected from the group consisting of ester solvents and ether solvents, and optionally at least one HCl scavenger; wherein the process is based on first dissolving the (thio)phosphoric acid derivative to be able to remove the at least one salt, and then causing solids formation of the (thio)phosphoric acid derivative.

A low VOC, low vapor pressure, low flash point and nonfoaming fertilizer stabilizer composition comprises: (A) two or more glycol ethers of Formula 1 Each of R.sup.1 and R.sup.3 are independently hydrogen or phenyl with the proviso that R.sup.1 and R.sup.3 are not simultaneously hydrogen, n is an integer of 3-10, and R.sup.2 is 90 to 100% hydrogen or 0 to 10% of one or more of methyl, ethyl or phenyl; and; and at least one fertilizer stabilizer, e.g., an N-alkyl thiophosphoric triamide.

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Provided herein is a use of a high-boiling solvent in a mixture comprising a (thio)phosphoric acid derivative and a process including the addition of a high-boiling solvent to a mixture comprising a (thio)phosphoric acid derivative to recover the (thio)phosphoric acid from the mixture by an evaporation process.

In accordance with the present invention, disclosed herein is a fertilizer core particle and fertilizer granule. The fertilizer core particle has one or more fertilizer additives, one or more binders comprising a wax, and one or more pH buffering agents, and wherein the core particle comprises from about 10 wt % to about 99 wt % of the one or more binders comprising a wax.

Reaction products and methods for making and using such reaction products are provided. For example, a reaction product comprising an adduct formed from two or more of a first nucleophile (e.g., including, but not limited to, a urease inhibitor), a second nucleophile, and an electrophile is described, which can be provided in various forms. Such a reaction product can be in the form of a solid or solution. Such a reaction product can also be combined with one or more additional components, including but not limited to, free urease inhibitor and/or a nitrogen-based fertilizer composition.

A method for synthesizing nanoparticles with a predetermined size at high or full yield comprises mixing a first precursor material comprising a first compound comprising a halide moiety and a metal or a metalloid, a second precursor material comprising a second compound comprising a polyatomic nonmetal, and a solvent. The method further comprises heating the mixture to colloidally form nanoparticles comprising the polyatomic nonmetal and the metal or metalloid. The halide moiety is selected such as to colloidally form the nanoparticles in a predetermined size range that is at least partially determined by this halide moiety.

The present disclosure relates to a novel highly concentrated phosphoric or thiophosphoric triamide formulation with enhanced stability against crystallization or freezing under extended exposure to low temperature of 0 C. or below. It also provides a method to make and use such formulations.