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PRODUCTION OF PHOSPHORIC ACID - Product Stewardship

feasible and present achievable emission levels associated with the manufacturing of the prod- ... Processes with different raw materials are used in the manufacture of phosphoric acid. The process is known as "thermal" when the raw material is elemental phosphorus. This process …

What Are the Different Industrial Uses of Phosphorus?

May 02, 2020· Any food manufacturing method that involves canning, freezing, or pre-cooking packaged foods usually involves uses of phosphorus compounds in the process. One of the main sources of phosphate pollution of waterways is due to the uses of phosphorus …

Production, Manufacturing and Extraction of

Production, Manufacturing and Extraction of Silver, Gold, Copper, Magnesium, Chromium, ... Manufacture of Phosphorus Modern Electric Process Manufacture in India Purification Smithel's Cold Flame Luminescence Manufacture of Red Phosphorus Hydrides of Phosphorus Phosphorus …

Phosphorus Fertilizer Production and Technology

Phosphorus (P) Cycling in Crop Production Systems. Phosphorus is an essential element for all forms of life. Phosphorus in the earth's crust is mostly contained in soils and sed൩ments. Soils contain both organic and inorganic P containing compounds. Phosphorus …

Meth Making Process - Meth Labs and Their Effects

For instance, when red phosphorus and hydriodic acid are mixed together during the process, a deadly phosphine gas is created. Other vapors and gases produced in the methamphetamine production …

Phosphorus - Essential Chemical Industry

Manufacture of red phosphorus. Red phosphorus, unlike white phosphorus, is not spontaneously flammable, although it is easily ignited. It is manufactured from white phosphorus. White phosphorus is run from its storage tank into a steel pot where it is kept under a layer of water.

How match is made - material, manufacture, making, history ...

The striking surface contains red phosphorus, powdered glass, and an adhesive such as gum arabic or urea formaldehyde. When a safety match is rubbed against the striking surface, the friction generates enough heat to convert a trace of the red phosphorus into white phosphorus.

Information Brief: Iodine in Methamphetamine Production

Iodine crystals, which are used legally for a variety of commercial and medical purposes, frequently are used illegally to produce high quality d-methamphetamine. The following ephedrine/pseudoephedrine reduction method utilizes iodine in the production process. • Iodine/red phosphorus…

How to Obtain Red Phosphorus | Sciencing

Red phosphorus, a relatively stable allotrope of phosphorus, has many uses. For example, it's a component of fireworks, flares and matches; it's used to dope silicon; and it's a plant fertilizer. You can …

Process for preparing aluminum or magnesium phosphide ...

May 25, 1982· The phosphide of aluminum or magnesium is prepared by a process comprising reacting the finely divided metal or an alloy of both metals with yellow phosphorus at a temperature between 300° and 600° C. in an inert gas atmosphere and in the presence of a catalyst which is chlorine, bromine or iodine or a compound of such element with phosphorus…

Red Phosphorus - Structure, Properties, Production, and Uses

The red phosphorus is then filtered out (and later reused), and the remaining acid is neutralized by adding a lye solution. A substance is added that will bind to the meth, and the liquid meth is then drained out. Hydrogen chloride gas is bubbled through the liquid meth, making it a crystalline hydrochloride salt. This is poured through a ...

How we make our fertilizer | Yara International

The use of phosphoric acid produces a higher concentration phosphorus fertilizer. The third manufacturing process is to use nitric acid to acidulate the rock phosphate. This process is a cleaner process …

Harrison Meth Lab HC Nov04 - Michigan

The "Red Phosphorus" (Red P) method of methamphetamine manufacturing could be associated with adverse health effects in densely populated buildings, such as apartments and hotels, both during the …

How light-emitting diode (led) is made - material ...

Impurities, the nuts in the cake, are introduced later in the manufacturing process; unlike imperfections, they are introduced deliberately to make the LED function correctly. This process is called doping. …

Clandestine Methamphetamine Manufacturing

agent (like red phosphorus and hydrogen iodide; or hydrogen gas and a metal catalyst). •This reduction starts with a material that is made up of one naturally-occurring isomer and produces a material that is also one isomer (the d-isomer only) rather than a 50: 50 mixture of d-and l-isomers, in contrast to the P2P process.

Red Phosphorous | Article about Red Phosphorous by The ...

If white phosphorus is heated in the absence of air at 250°–300°C for several hours, red phosphorus is obtained. The transition is exothermic and is accelerated by ultraviolet rays as well as by impurities (iodine, sodium, selenium). Standard commercial red phosphorus …

iodine red phosphorus reduction - YouTube

Apr 02, 2013· Small scale push-pull reaction, worlock method No sound, P is old so not very reactive, mixture a bit too wet, result: boring video. Total duration was about 90 minutes, longer would have …

What Is Red Phosphorus? | Sciencing

In this process, red phosphorus is mixed with iodine to produce hydriodic acid. References. Free Dictionary Phosphorus; Encyclopedia Britannica Red Phosphorus; Red Phosphorus; About the …

Manufacture of Red Phosphorus - Chempedia - LookChem

Manufacture of Red Phosphorus; In terms of quantity produced, red phosphorus is much less important than white phosphorus. The worldwide production is currently about 6 . 10 3 t/a. The conversion of white phosphorus to red phosphorus is an exothermic reaction producing red phosphorus as a solid product, making removal from the reaction difficult.