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Sodium ethyl xanthate is a pale yellow powder. Its aqueous solutions are stable at high pH if not heated. It rapidly hydrolyses at pH less than 9 at 25 °C. It is the conjugate base of the ethyl xanthic acid, a strong acid with pK a of 1.6 and pK b estimated as 12.4 for the conjugate base. [6]
Sodium salt of ethyl xanthate (sodium ethylxanthate or sodium O-ethyl dithiocarbonate) Structure of a xanthate ester Cellulose xanthate (orange) A xanthate is a salt or ester of a xanthic acid. The formula of the salt of xanthic acid is [R−O−CS 2] − M + (where R is organyl group and M is usually Na or K). [1] Xanthate also refers to the ...
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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.
A clinical chemistry analyzer; hand shows size. Clinical chemistry (also known as chemical pathology, clinical biochemistry or medical biochemistry) is a division in medical laboratory sciences focusing on qualitative tests of important compounds, referred to as analytes or markers, in bodily fluids and tissues using analytical techniques and specialized instruments. [1]
An example is sodium ethyl xanthate as a collector in the flotation of galena (lead sulfide) to separate it from sphalerite (zinc sulfide). The polar part of xanthate anion attaches to the ore particles and the non-polar hydrocarbon part forms a hydrophobic layer. The particles are brought to the water surface by air bubbles.
For most substances presented, the optimal levels are the ones normally found in the population as well. More specifically, optimal levels are generally close to a central tendency of the values found in the population. However, usual and optimal levels may differ substantially, most notably among vitamins and blood lipids, so these tables give ...
The alkali metal thioxanthates are produced by treating a thiol with a base in the presence of carbon disulfide, as illustrated by the preparation of sodium ethyl thioxanthate:. [1] EtSH + NaOH + CS 2 → EtSCS − 2 Na + + H 2 O. Sodium ethyl thioxanthate is similar structurally to sodium ethyl xanthate.