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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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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.
Ethyl xanthic acid is an organic compound with the chemical formula CH 3 CH 2 −O−C(=S)−SH. It can be viewed as an O-ethyl ester of dithiocarbonic O,S-acid (the formula of that acid is S=C(OH)(SH)). Ethyl xanthic acid belongs to the category of thioacids, where the prefix thio-means that an oxygen atom in the compound is replaced by a ...
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.
A yellow solid, It is obtained by oxidation of sodium ethylxanthate or potassium ethylxanthate. [2] [3] According to X-ray crystallography, the two C 2 H 5 OC(S)S) groups in solid diethyl dixanthogen disulfide are planar and are linked by a disulfide bond. The C-S-S-C dihedral angle is near 90°, as is common for acyclic disulfides. [1]