Is ash acidic or alkaline? Wood ashes arealmost as alkalinewhen dissolved in water, with a pH varying from about 9 to 11. Thus adding wood ash to our soils has two distinct benefits. It is alkaline so it can neutralize soil acidity, and the source of the alkalinity is calcium minerals,...
Also, the use of an acidic solution to anodise magnesium is fraught with serious difficulties as magnesium is rapidly attacked by most common acids. Therefore, anodisation of magnesium should preferably take place in alkaline solutions. [0006] One method of anodising magnesium relies on this ...
Laser marking is a non-contact marking technique that incorporates laser technology. The energy given by the laser beam interacts with the substrate and modifies its properties. There are five laser marking processes that introduce physical and chemical changes depending on the nature of the substrate...
The condensation may be effected under raised temperatures and pressures in the presence of quaternary hydroxides, amines, acidic and coordinating type compounds or strong alkaline catalysts, e.g. KOH. If an ester is desired as end product, the condensation products may be esterified with chloro...
Once clean, depending on the specific aluminum alloy, the surface may be treated in an acid or alkaline etch to remove alloying elements which might interfere with the conversion coating reaction. In general this step enriches the surface exposing more aluminum, such as for castings and more heav...
Reacting alkaline earth metal and/or chlorine for in situ formation of hydrogen chloride and alkaline earth metal oxide or hydroxide; cooling flue gas; forming mercury dichloride; salt formation, quenching, separation US6447740 May 3, 1999 Sep 10, 2002 Isca Management Ltd. Mercury removal from flu...
Such processes included a pre-transesterification step, where fats/oils were reacted with alcohol in the presence of an acidic catalyst, and a subsequent transesterification step, where an alkaline/alcohol blend was added for the reaction completion. Transesterification processes employing alkaline ...
acidic solutions. The acid neutralizing agent generally comprises a metal compound and/or an oxide, a sulfide or a carbonate. Metal oxides that may be used as the acid neutralizing agent include, for instance, magnesium oxide and/or zinc oxide. Sulfides that may be used include zinc sulfide,...
However, even the latter may be further polymerized by contact with acidic agents, alkaline agents, or with air, as disclosed in the copending applications of James SFranklin Hyde, Serial Number 481,155, filed March 30, 1943, Serial Number 481,154, filed March 30, 1943; and Serial Number...
metal or amine, addition salt forms by treatment with appropriate organic and inorganic bases. Appropriate base salt forms comprise, for example, the ammonium salts, the alkali and earth alkaline metal salts, e.g. the lithium, sodium, potassium, magnesium, calcium salts and the like, salts ...