Degeneration of the optic nerve and papillomacular bundle with resulting loss of central vision and blindness, which is progressive for several weeks, then usually becomes stationary with permanent central scotoma; the age of onset is variable, most often in the third decade; more males than females are affected.
Fluoridation Chemicals. The fluoride chemicals used to fluoridate drinking water are: hydrofluorosilicic acid, sodium fluorosilicate, and sodium fluoride. Unlike the fluoride compounds found in toothpaste or supplements, fluoridation chemicals are not pharmaceutical grade quality.They are, instead, unpurified industrial by-products that are collected in the air pollution control systems of certain industries.he fluoride chemicals used to fluoridate drinking water are: hydrofluorosilicic acid, sodium fluorosilicate, and sodium fluoride.
Hygroscopic substances include cellulose fibers, sugar, caramel, honey, glycerol, ethanol, wood, methanol, sulfuric acid, many fertilizer chemicals, many salts, and a wide variety of other substances. Zinc chloride and calcium chloride, as well as potassium hydroxide and sodium hydroxide, are so hygroscopic that they readily dissolve in the water they absorb: this property is called deliquescence. Not only is sulfuric acid hygroscopic in concentrated form but its solutions are hygroscopic down t