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The first patent for an oxygen scavenger used an alkaline solution of pyrogallic acid in an air-tight vessel. [7] [8] Modern scavenger sachets use a mixture of iron powder and sodium chloride. [8] Often activated carbon is also included as it adsorbs some other gases and many organic molecules, further preserving products and removing odors.
[10] [11] Sodium hydroxide is frequently used in the process of decomposing roadkill dumped in landfills by animal disposal contractors. [8] Due to its low cost and easy availability, it has also been used to dispose of corpses by criminals. Italian serial killer Leonarda Cianciulli used this chemical to turn dead bodies into soap. [12]
Sodium hydroxide is a popular strong base used in industry. Sodium hydroxide is used in the manufacture of sodium salts and detergents, pH regulation, and organic synthesis. In bulk, it is most often handled as an aqueous solution, [30] since solutions are cheaper and easier to handle.
As of December 2024, liquid fuel combinations in common use: Kerosene (RP-1) / liquid oxygen (LOX) Used for the lower stages of the Soyuz-2, Long March 6, Long March 7, Long March 8, and Tianlong-2; boosters of Long March 5; the first stage of Atlas V; and both stages of Electron, Falcon 9, Falcon Heavy, Firefly Alpha, and Long March 12.
Deionizing resin regeneration with sulfuric acid and sodium hydroxide is approximately 20–40% efficient. Neutralized deionizer regeneration wastewater contains all of the removed ions plus 2.5–5 times their equivalent concentration as sodium sulfate .
Superabsorbent polymer: Polymer that can absorb and retain extremely large amounts of a liquid relative to its own mass. [5] Notes: The liquid absorbed can be water or an organic liquid. The swelling ratio of a superabsorbent polymer can reach the order of 1000:1. Superabsorbent polymers for water are frequently polyelectrolytes.
TSP is used as a cleaning agent, builder, lubricant, food additive, stain remover, and degreaser. [7] As an item of commerce TSP is often partially hydrated and may range from anhydrous Na 3 PO 4 to the dodecahydrate Na 3 PO 4 ·12H 2 O. Most often it is found in white powder form. It can also be called trisodium orthophosphate or simply sodium ...
Phenolphthalein is used in toys, for example as a component of disappearing inks, or disappearing dye on the "Hollywood Hair" Barbie hair. In the ink, it is mixed with sodium hydroxide, which reacts with carbon dioxide in the air. This reaction leads to the pH falling below the color change threshold as hydrogen ions are released by the reaction: