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Application of novel nitration inhibitor and polyacid in processing inorganic fertilizer containing nitration inhibitor

A technology of nitrification inhibitor and phosphoric acid, which is applied in the field of inorganic fertilizer itself and pyrazole derivatives, can solve the problems of mixed formula, fertilizer and soil troubles, and achieve the effect of cost reduction and good environmental tolerance

Inactive Publication Date: 2004-06-23
BASF SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mixing formulations, fertilizers and soil is a hassle

Method used

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  • Application of novel nitration inhibitor and polyacid in processing inorganic fertilizer containing nitration inhibitor
  • Application of novel nitration inhibitor and polyacid in processing inorganic fertilizer containing nitration inhibitor
  • Application of novel nitration inhibitor and polyacid in processing inorganic fertilizer containing nitration inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0073] Preparation of N-hydroxymethyl-3,4-dimethylpyrazole

[0074] 96 g (1.0 mol) of 3,4-dimethylpyrazole in 50 ml of methanol was dissolved in 100 g (1.0 mol) of formaldehyde solution (30%) at room temperature. Water and methanol were then distilled off. The title compound remained as a white solid (95% yield).

[0075] Preparation of N-Hydroxymethyl-4-chloro-3-methylpyrazole

[0076] 116 g (1.0 mol) of 4-chloro-3-methylpyrazole in 50 ml of methanol were dissolved in 100 g (1.0 mol) of formaldehyde solution (30%) at room temperature. Water and methanol were then distilled off. The title compound remained as a white solid (95% yield).

[0077] Preparation of Dihydrogen Phosphate-3,4-Dimethylpyrazolium

[0078] 96 g (1.0 mol) of 3,4-dimethylpyrazole was dissolved in 115 g (1.0 mol) of phosphoric acid (85%) at room temperature. The water contained in the phosphoric acid was distilled off. After several hours, the title compound crystallized from the initially present oil...

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Abstract

The use of inorganic or organic poly acids is claimed for treating mineral fertilisers containing a nitrification inhibitor. The use of compounds of formula (I) is claimed as nitrification inhibitors. R1 = H, halo or 1-4C alkyl; R2 = 1-4C alkyl; R3 = H or CH2OH, and when R3 = H, the compound may be converted to a phosphoric acid salt. A mineral fertiliser containing a poly acid and optionally (I) is also claimed. 3,4-dimethylpyrazole (Ia), 4-chloro-3-methyl-pyrazole (Ib), N-hydroxymethyl-3,4-dimethylpyrazole (Ic), N-hydroxymethyl-4-chloro-3 -methylpyrazole (Id), acid addition salts of (Ic) and (Id), and mixtures of two or more of (Ia)-(d) are new. -

Description

[0001] This application is a divisional application of the parent application whose application number is CN97198587.1. The filing date of the parent case is August 6, 1997; the title of the invention is "Application of a New Nitrification Inhibitor and Polyacid in the Treatment of Inorganic Fertilizers Containing Nitrification Inhibitors". technical field [0002] This invention relates to the treatment of inorganic fertilizers with inorganic or organic polyacids. [0003] In particular, the present invention relates to the use of polyacids for the treatment of inorganic fertilizers as a mixture with at least one nitrification inhibitor, the use of selected pyrazole derivatives as inorganic fertilizer nitrification inhibitors and also as stabilizers for liquid manure or liquid fertilizer formulations, and correspondingly processed inorganic fertilizers themselves. Furthermore, the present invention relates to pyrazole derivatives which can be used as nitrification inhibitors...

Claims

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Application Information

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IPC IPC(8): C05F3/00C05G3/00C05G3/90C05G5/00C07D231/12C07D231/16C07D321/12C07D521/00
CPCC07D231/12C05G3/08C05F3/00Y10S71/902C07D249/08C07D233/56C07D231/16Y02P20/145C05G3/90Y02A40/20Y02P60/21
Inventor T·巴斯N·里伯R·E·戈尔德J·德雷斯瑟尔K·埃尔哈德特K·霍尔希勒冯洛克奎恩E·莱波尔德S·里特廷格
Owner BASF SE
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