Topic
Potassium nitrate
About: Potassium nitrate is a research topic. Over the lifetime, 3537 publications have been published within this topic receiving 29450 citations. The topic is also known as: Nitric acid, potassium salt & Saltpeter.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the degree of absorption polarization has been calculated as a function of the ratio of optical densities in the region of low and high absorbances of a uniaxial crystal.
20 citations
20 citations
Patent•
21 Mar 1996TL;DR: In this paper, a process for the production of a gas-generating composition containing a redox-couple including a water soluble azide component, for example, azide of sodium, potassium, lithium, calcium or barium, and an oxidizer component was described.
Abstract: A process for the production of a gas-generating composition containing a redox-couple including a water soluble azide component, for example, azide of sodium, potassium, lithium, calcium or barium, and an oxidizer component, for example, sodium nitrate, sodium perchlorate, potassium nitrate, potassium perchlorate or an oxide of iron, nickel, vanadium, copper, titanium, manganese, zinc, tantalum, silicon or aluminium, said oxidizer component being capable of reacting with said azide component to generate gas, said process comprising the steps of: forming an aqueous dispersion of the redox-couple wherein the azide component is totally dissolved and the oxidizer is uniformly dispersed and stabilised in the azide solution; passing said aqueous dispersion through a spray nozzle to form a stream of droplets; and contacting said droplets with hot air whereby the water is removed to produce solid particles of gas-generating composition.
20 citations
18 Sep 2009-Food Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment
TL;DR: Results indicated that the addition of EOO to tomato purée prevents the corrosion process in the case of tin, where concentrations were lowered from 223 to 28 mg kg−1 for cans with DOS oil and EOO at 20°C, respectively (inhibition rate of 87%).
Abstract: The dissolution of iron and tin from tinplate cans filled with tomato puree (pH 4.34) and dioctyl sebacate oil (DOS), essential onion oil (EOO) or potassium nitrate was studied using atomic absorption spectroscopy (AAS), while nitrate was determined using high-performance liquid chromatography (HPLC). The maximum values found in cans were up to 284 mg kg−1 for tin and 513 mg kg−1 for iron at elevated storage temperature. Results indicated that the addition of EOO to tomato puree prevents the corrosion process in the case of tin, where concentrations were lowered from 223 to 28 mg kg−1 for cans with DOS oil and EOO at 20°C, respectively (inhibition rate of 87%). On the other hand, the presence of EOO enhanced the corrosion process for iron increasing the concentration from 15 to 46 mg kg−1 during 7 months of storage, although this value did not exceed maximum permitted value (50 mg kg−1). In cans with tomato puree and potassium nitrate, dissolution of tin started after 30 (36°C) and 60 (20°C) days of stora...
20 citations
Patent•
10 Jun 2009
TL;DR: In this paper, a method for producing mineral-based potassium nitrate for agricultural use through rocks rich in potassium was proposed, which includes the following steps: crushing the rock rich in the potassium, and milling the rocks after mineral dressing and trash extraction to obtain the powder with the main phase of potash feldspar; mixing the potash faðspar powder and lime according to the mass ratio of 1: 0.80-0.85, adding water, stirring and mixing the materials for reactions in a reaction kettle, carrying out a hydrothermal reaction
Abstract: The invention relates to a method for producing mineral-based potassium nitrate for agricultural use through rocks rich in potassium. The method comprises the following steps: crushing the rocks rich in the potassium, and milling the rocks after mineral dressing and trash extraction to obtain the powder with the main phase of potash feldspar; mixing the potash feldspar powder and lime according to the mass ratio of 1: 0.80-0.85, adding water according to the solid-liquid mass ratio of 1: 15-25, stirring and mixing the materials for reactions in a reaction kettle, carrying out a hydrothermal reaction on the condition of stirring at a temperature of between 180 and 250 DEG C, carrying out the reaction at constant temperature for 5 to 10 hours to obtain KOH solution and tobermorite; and preparing potassium nitrate through the obtained KOH solution, compounding the potassium nitrate with the tobermorite, and adding a binder for granulation and forming so as to obtain the novel mineral-based potassium nitrate for agricultural use. The KNO3 nutrient content can be adjusted in the range of between 22.0 and 58.6 percent.
20 citations