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Metal ammine complex. Ball-and-stick model of the tetraamminediaquacopper (II) cation, [Cu (NH3)4(H2O)2]2+. In coordination chemistry, metal ammine complexes are metal complexes containing at least one ammonia (NH3) ligand. "Ammine" is spelled this way for historical reasons; [1] in contrast, alkyl or aryl bearing ligands are spelt with a ...
Compatibility (chemical) Chemical compatibility is a rough measure of how stable a substance is when mixed with another substance. [1] If two substances can mix together and not undergo a chemical reaction, they are considered compatible. Incompatible chemicals react with each other, and can cause corrosion, mechanical weakening, evolution of ...
Ammonia is commonly used in the illegal manufacture of methamphetamine through a Birch reduction. [122] The Birch method of making methamphetamine is dangerous because the alkali metal and liquid ammonia are both extremely reactive, and the temperature of liquid ammonia makes it susceptible to explosive boiling when reactants are added. [123]
The Haber process, [1] also called the Haber–Bosch process, is the main industrial procedure for the production of ammonia. [2][3] It converts atmospheric nitrogen (N 2) to ammonia (NH 3) by a reaction with hydrogen (H 2) using a finely divided iron metal catalyst: This reaction is slightly favorable in terms of enthalpy, but is disfavored in ...
Alkaline copper quaternary, usually abbreviated ACQ, is a type of water-based wood preservative product containing a soluble copper (II) complex and quaternary ammonium alkyl - or aryl -substituted compounds ("quats"). Thus the product was originally called ammoniacal copper/quaternary ammonium. [ 1][ 2]
Quaternary ammonium cation. The R groups may be the same or different alkyl or aryl groups. Also, the R groups may be connected. In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure [NR 4] +, where R is an alkyl group, an aryl group [1] or organyl group.
Ammonia-resistant. For joining ferrous and non-ferrous metals (steel, copper, brass...). Good flow properties. With stainless steel in humid environments risk of interfacial corrosion. Copper-free, good where copper presence is not desired and/or in presence of ammonia. (Ammonia in presence of water rapidly attacks copper-containing alloys.)
Ammonium carbamate. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Ammonium carbamate is a chemical compound with the formula [NH4] [H2NCO2] consisting of ammonium cation NH+ 4 and carbamate anion NH2COO−. It is a white solid that is extremely soluble in water, less so in alcohol.
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