Sodium plumbite solution

Sulphur, as sulphide ion, is detected by precipitation as black lead sulphide with lead acetate solution and acetic acid or with sodium plumbite solution (an alkaLine solution of lead acetate). Halogens are detected as the characteristic silver halides by the addition of silver nitrate solution and dilute nitric acid the interfering influence of sulphide and cyanide ions in the latter tests are discussed under the individual elements. 

Sulphur. Moisten the centre of a filter paper with sodium plumbite solution. Add about 10 ml. of dilute hydrochloric acid to the residue in the dish and immediately cover it with the prepared filter paper. If zinc sulphide is present in the residue, a dark brown stain, visible on the upper surface of the paper, will be obtained frequently the presence of hydrogen sulphide can also be detected by its odour. 

Sodium plumbite solution, 1041 Sodium press, 164 Sodium sulphide, anhydrous, 197 use of, 574, 587... 

Refining treatment includes among its objects the removal of such undesirable products as hydrogen sulfide, mercaptan sulfur, and free or corrosive sulfur. Hydrogen sulfide and mercaptans cause objectionable odors, and both are corrosive. The presence of such compounds can be determined by the Doctor test (ASTM D-484, ASTM D-4952, IP 30). The Doctor test (which is pertinent for petroleum product specifications ASTM D-235) ensures that the concentration of these compounds is insufficient to cause such problems in normal use. In the test, the sample is shaken with sodium plumbite solution, a small quantity of sulfur is added, and the mixture is shaken again. The presence of mercaptans, hydrogen sulfide, or both is indicated by discoloration of the sulfur floating at the oil-water interface or by discoloration of either of the phases. 

Mercaptans in motor fuels, kerosene and other petroleum products can be detected by shaking the liquid sample with sodium plumbite solution, adding powdered sulfur and shaking again. If amercaptan or hydrogen sulfide is present, discoloration of flic floating sulfur or liquid phase occurs. 

The curves in Figure 3 show that after several hours blends of cotton with polyester picked up lead from sodium plumbite solution in amounts that varied linearly with the percentage of cellulose. Although blends with as little as 50% cellulose formed glassy materials fabrics containing at least 80% cellulose preserved the weave pattern better in the glassy product. 

Sulfides may be detected with sodium plumbite solution (Idn, Limit 1.8 y Na S). ... 

Lead(II) sulphide crystallizes in a perfect NaCl structure with Pb-S distance 2 97 A, and is the only binary sulphide of lead. It is found in nature as large regular crystals of galena. It has a grey-blue metallic character and density about 7-6. It is best synthesized in a crystalline form by the action of thiourea upon sodium plumbite solution . ... 

The do(Asodium plumbite solution. 

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