Detection method for impurity sodium salt in sodium hydrosulfide product
The invention relates to the technical field of an inorganic material, in particular to a detection method for an impurity sodium salt in a sodium hydrosulfide product. The detection method comprisesthe steps of (1) dissolving a sodium hydrosulfide sample in water to obtain a sample solution; (2) ad...
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| creator | YANG DELIN GUO HANGUANG DING ZHIWEN YANG LINYAN ZENG KAIWEN LIANG QIBO |
| description | The invention relates to the technical field of an inorganic material, in particular to a detection method for an impurity sodium salt in a sodium hydrosulfide product. The detection method comprisesthe steps of (1) dissolving a sodium hydrosulfide sample in water to obtain a sample solution; (2) adding an excessive amount of barium sulfide solution into the sample solution, performing heat-preservation reaction until no precipitant is generated, performing solid-liquid separation, and washing a solid phase to obtain a first precipitant; (3) dropwise adding a hydrochloric acid solution into the first precipitant until the weight of the precipitant is not changed, performing solid-liquid separation, and washing a solid phase to obtain a second precipitant and a filtering liquid; and (4) transferring the second precipitant to a porcelain crucible ignited to constant weight, performing ignition to constant weight, calculating the content of impurity sodium sulfide in the sodium hydrosulfide product according to |
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| subjects | INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING |
| title | Detection method for impurity sodium salt in sodium hydrosulfide product |
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