Owing to problems in manufacturing reproducibility, alum has been almost completely replaced by aluminium hydroxide and aluminium phosphate for commercial vaccines. These can be prepared in a more ...
Sodium aluminate forms through the chemical reaction of aluminum oxide with sodium hydroxide and water, as follows: The residues sink gradually to the bottom of the tank and are later removed. In the ...
Sodium hydroxide isn’t super safe, but it is much less problem to buy, store, and use than battery acid. Aluminum naturally forms an oxide layer on its surface when exposed to air. Anodizing in ...
Of course, sodium hydroxide isn’t really a metal, but then neither is the aluminum oxide that’s been touted as real transparent aluminum. Aluminum oxide also makes transparent gemstones like ...
A few drops of dilute sodium hydroxide solution react to form a white precipitate with aluminium ions, calcium ions and magnesium ions. However, if excess sodium hydroxide solution is added ...
The salt helps with this transfer. Since there's still a layer of aluminum hydroxide present, you also need baking soda to abolish it and polish the silver. Baking soda works as a gentle abrasive, so ...