Anonymous. Has a faint, characteristic odor. It gradually absorbs carbon dioxide from air. TYPICAL APPLICATIONS AND MATERIALS USING ZINC OXIDE Zinc Oxide: Very fine, odorless, amorphous, white or yellowish white powder, free from gritty particles. Zinc Oxide is insoluble in water, solvents and neutral oils, but is soluble in both strong acids and alkalis. The table below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure.Units of solubility are given in grams per 100 millilitres of water (g/100 ml), unless shown otherwise. Removal of Triphenylphosphine Oxide by Precipitation with Zinc Chloride in Polar Solvents Donald C. Batesky,† Matthew J. Goldfogel,‡ and Daniel J. Weix*,‡ †Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States and ‡Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States Zinc oxide, as an amphoteric material, reacts with acids to form zinc salts and with strong alkalies to form zincates; zinc oxide reacts with carbon dioxide in moist air to form oxycarbonate; acidic gases (e.g., hydrogen sulfide, sulfur dioxide, and chlorine) react with zinc oxide, and carbon monoxide or hydrogen reduce it to the metal zinc oxide not soluble in corn oil, olive oil, vegetable oil etc. After mixing, the suspension was centrifuged for 6 hours to separate the (undissolved) zinc oxide particles from the solution. During this study, zinc oxalate was prepared in aqueous and organic solvents using zinc acetate and oxalic acid as precursors. Nano-size zinc oxide was obtained by thermal decomposition of aqueous and organic mediated zinc oxalate at 450 °C. This is a very subjective question, so I am sure that you will get many different answers. Contents don't know what makes it soluble. 2) The change tendency of the solubility of zinc oxide is similar at 25, 50, 75 and 100 Â°C, but the four maximum values of zinc oxide solubility are different, and that of NaZn(OH) 3 decreases with increasing alkali concentration. Zinc oxide has chemical properties which impede the growth of fungi, mildew and mold. The thermo-gravimetric analysis (TGA/DTA) showed formation of ZnO at 400 °C. Solubility was determined by mixing 10 grams of zinc oxide in 100 ml of demineralized water for 30 minutes at room temperature. 5 years ago. 0 0. The substances are listed in alphabetical order. Zinc Stearate: Fine, white, bulky powder, free from grittiness. It is instructive to treat zinc oxide ores with sodium hydroxide. Insoluble in water and in alcohol; soluble in dilute acids.