Word: acidity
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Dates: during 1940-1949
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...Pont process old nylon is put into a hot solution. The nylon (a synthetic chemical made from adipic acid and a base related to ammonia called hexamethylene-diamine) dissolves like sugar in hot tea. On cooling, the adipic acid crystallizes out and is purified, while the diamine remains in solution and can be purified by distillation. The two white crystalline chemicals resulting from this unscrambling of nylon fiber are then recombined and polymerized to form the long, tenuous molecules that give nylon its strength and elasticity. This new liquid nylon, identical with the original substance, can be squeezed out into...
...Lodi, Calif, last month, Dr. John R. Matchett of the U.S. Department of Agriculture extracted 400 Ib. of tartrates from winery residues merely by running them through "Amberlite," thus opened the way for a possible 1943 production of 10,000,000 Ib. of tartaric acid.* In Idaho, beet sugar refiners are increasing sugar production, reducing by-product molasses with equal simplicity...
This was not new, for natural "green-sands" and artificial zeolites have long been used for such softening. But a slightly more complex resin of the same type proved able to draw even sodium atoms out of solution, replace them with hydrogen. This merely substituted acid for salt, but still another resin, made with amines instead of phenol, extracted the acid intact, leaving pure water. Both resins were gradually used up but could be revived by reverse treatment with stronger solutions...
...need for tartaric acid is serious for munitions, baking powder, synthetic silk, photographic materials, candy. The U.S. requires at least 15,000,000 Ib. annually. Foreign sources of argols and lees (crusts and dregs) of winery wastes...
...fortnight he listed other recent uses for vitamin C: intravenous injection of one gram in solution for shock (another instance when blood histamine is high); in wound healing; for insomnia; in treating industrial workers exposed to toxic dusts. If people taking vitamin C by mouth are troubled by its acid reaction, he advises them to mix a little bicarbonate of soda with...