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2. Ammonium sulfate precipitation - Wikipedia

   en.wikipedia.org/wiki/Ammonium_sulfate_precipitation

   Ammonium sulfate is an inorganic salt with a high solubility that disassociates into ammonium (NH + 4) and sulfate (SO 2− 4) in aqueous solutions. [1] Ammonium sulfate is especially useful as a precipitant because it is highly soluble, stabilizes protein structure, has a relatively low density, is readily available, and is relatively inexpensive.

3. Salting out - Wikipedia

   en.wikipedia.org/wiki/Salting_out

   Salting out (also known as salt-induced precipitation, salt fractionation, anti-solvent crystallization, precipitation crystallization, or drowning out) [1] is a purification technique that utilizes the reduced solubility of certain molecules in a solution of very high ionic strength.

4. Solubility chart - Wikipedia

   en.wikipedia.org/wiki/Solubility_chart

   The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.

5. What Is a W-9 Form? Here’s When You Need To Fill One Out - AOL

   www.aol.com/w-9-fill-one-163112301.html

   Form W-9 is the Request for Taxpayer Identification Number and Certification form. ... Any non-employee who is receiving pay and classified as a U.S. citizen or resident alien will need to fill ...

6. Ammonium sulfate - Wikipedia

   en.wikipedia.org/wiki/Ammonium_sulfate

   Calcium carbonate precipitates as a solid, leaving ammonium sulfate in the solution. (NH 4) 2 CO 3 + CaSO 4 → (NH 4) 2 SO 4 + CaCO 3. Ammonium sulfate occurs naturally as the rare mineral mascagnite in volcanic fumaroles and due to coal fires on some dumps. [14] Ammonium sulfate is a byproduct in the production of methyl methacrylate. [15]

7. Tutton's salt - Wikipedia

   en.wikipedia.org/wiki/Tutton's_salt

   Tutton's salts are a family of salts with the formula M 2 M'(SO 4) 2 (H 2 O) 6 (sulfates) or M 2 M'(SeO 4) 2 (H 2 O) 6 (selenates). These materials are double salts, which means that they contain two different cations, M + and M' 2+ crystallized in the same regular ionic lattice. [1]