反应详情

A 20 weight percent aqueous solution of sodium sulfide was prepared by dissolving sodium sulfide (116 grams, 1.48 moles) in the form of hydrated flakes (193 grams, 60%) into 385 grams of water in a 5-liter round-bottomed flask. This solution was then cooled by means of an ice-water bath and converted to an aqueous solution of sodium hydrosulfide (NaSH) by saturating it with an excess of hydrogen sulfide by adding hydrogen sulfide with stirring until no more was absorbed. A dropping funnel was charged with octanoyl chloride (241 grams, 1.48 moles). With the temperature of the sodium hydrosulfide solution in the 5-liter flask at 9° C. the addition of the octanoyl chloride to the 5-liter flask was begun with stirring of the contents of the 5-liter flask with a mechanical stirrer, immediately after the addition of 1.7 grams of a 10% aqueous solution of methyltrioctylammonium chloride to the 5-liter flask. The addition of the octanoyl chloride was completed over the course of 1.8 hours with a final temperature of 13° C. The content of the 5-liter flask was kept between 8 and 19° C. during the course of the addition. The content of the 5-liter flask was then allowed to reach ambient temperature and stirring was stopped, yielding a clear, slightly viscous, one-phase aqueous solution of sodium thiooctanoate and sodium chloride.

1. temperatureThis solution was then cooled by means of an ice-water bath
2. concentrationby saturating it with an excess of hydrogen sulfide
3. additionby adding hydrogen sulfide
4. customno more was absorbed
5. stirringwith stirring of the contents of the 5-liter flask with a mechanical stirrer
6. customwas completed over the course of 1.8 hours
7. customtemperature of 13° C
8. additionThe content of the 5-liter flask was kept between 8 and 19° C. during the course of the addition
9. customto reach ambient temperature
10. stirringstirring