Ammonium Polysulfide Solution

Monitor Ammonia Chloride in the Overhead Water, keep Ammonia Sulfide <5,000 ppm Use Steam Condensate as Water Wash at a Rate of 1-2 gpm/1000 bbl of Fresh Feed Use Ammonium Polysulfide Solution (especially if HCN > 25 ppm) to 10-20 ppm Residual HCN Make sure the Wash Water is injected uniformly into the Gas Stream Use Feed Forward Water Wash Scheme instead of Reverse Cascade ... 

The reduction of sulfur by hydrogen sulfide in liquid ammonia leads to (NH4)28 , ammonium polysulfide solutions, following ... 

The corresponding 4-ethoxy derivative (m.p. 114°) was similarly prepared. When a yellow ammonium polysulfide solution was used, an anhydride with five sulfur atoms in the molecule was isolated4. 

SYNS AMMONIUM POLYSULFIDE, solution pOT) AMMONIUM SULFIDE (POLY-) AMMONIUM SLILFIDE, solution, red AMMONIUM TRISULFIDE AP-S DIAMMONIUM TRISULFIDE... 

A slurry of 0.50g (l.SOmmol) of Ti(MeCp)2Cl2 in lOmL of acetone is prepared in an open 2S-mL Erlenmever flask with magnetic stirring. In one portion, 1 mL of freshly filtered ammonium polysulfide solution is added to the Ti(MeCp)2Cl2 solution. After stirring for 15 min, the solution is filtered in air, and the red crystals are washed with water, methanol, and then two 5-mL portions of CS2. Yield 0.510 g (77%). 

An ammonium polysulfide solution is prepared as in Section 3-A above to this solution is added 3.00 g K2PdCl4 (9.18 mmole) dissolved in 10 mL water. After shaking for 2 minutes, the initial black precipitate redissolves, and the solution is filtered through diatomaceous earth (filter aid or Celite) prewashed with ammonium hydroxide. The filtrate is stoppered and the reaction allowed to proceed 5 days at room temperature (ca. 22°). At this time, the solution is noticeably lighter in color and the product has precipitated. After filtration, the complex is washed with water, ethanol, diethyl ether, carbon disulfide, and... 

Under inert-atmosphere conditions, a mixture of 20 mL ammonium polysulfide solution ( 20% (NH4)2S purchased from J. T. Baker Chemical Co., Phillips-burg, NJ 08865) and 20 mL methanol is added dropwise from a separatory... 

Monoclinic, Sy, m.p. 106.8 °C, is obtained by slow crystallization of sulfur from ethanolic ammonium polysulfide solutions. It transforms slowly into and/or Sg.. ------------ -------... 

This identification limit for tellurium is also reached in an ammonium polysulfide solution that is saturated with selenium (about 60 y selenium per drop). 

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