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Polyacrylonitrile (PAN) was first synthesized in 1930 by Hans Fikentscher and Claus Heuck in the Ludwigshafen works of the German chemical conglomerate IG Farben. [3] However, as PAN is non- fusible , and did not dissolve in any of the industrial solvents being used at the time, further research into the material was halted. [ 4 ]
The [BAr F 4] − anion with four fluorinated aryl groups distributed tetrahedrally about a central boron atom. Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is an anion with chemical formula [{3,5-(CF 3) 2 C 6 H 3} 4 B] −, which is commonly abbreviated as [BAr F 4] −, indicating the presence of fluorinated aryl (Ar F) groups.
The general structural formula of a peroxyacyl nitrate peroxy acetyl nitrate, the most common PAN. In organic chemistry, peroxyacyl nitrates (also known as Acyl peroxy nitrates, APN or PANs) are powerful respiratory and eye irritants present in photochemical smog.
Peroxyacetyl nitrate is a peroxyacyl nitrate.It is a secondary pollutant present in photochemical smog. [1] It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas. [2]
Polymer chemistry: Frank R. Mayo and Frederick M. Lewis: Michaelis–Menten equation: Chemical kinetics: Leonor Michaelis and Maud Menten: Monge–Ampère equation: Calculus: Gaspard Monge and André-Marie Ampère: Morison equation: Fluid dynamics: J. R. Morison: Nahm equations: Differential equations: Werner Nahm: Navier–Stokes equations ...
Polyacrylamide (abbreviated as PAM or pAAM) is a polymer with the formula (-CH 2 CHCONH 2-). It has a linear-chain structure. PAM is highly water-absorbent, forming a soft gel when hydrated. In 2008, an estimated 750,000,000 kg were produced, mainly for water treatment and the paper and mineral industries. [1]
This is an index of lists of molecules (i.e. by year, number of atoms, etc.). Millions of molecules have existed in the universe since before the formation of Earth. Three of them, carbon dioxide, water and oxygen were necessary for the growth of life.
With a formula weight of 86.8, BF – 4 is also conveniently the smallest weakly coordinating anion from the point of view of equivalent weight, often making it the anion of choice for preparing cationic reagents or catalysts for use in synthesis, in the absence of other substantial differences in chemical or physical factors. The BF −