Ammonium sulfide

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Ammonium sulfide, also known as diammonium sulfide, is a hypothetical salt with the formula [NH₄]₂S. Aqueous solutions purporting to contain this salt are commercially available. With a pK_a exceeding 15,^[1] the hydrosulfide ion cannot be deprotonated by ammonia. Thus such solutions consist of a mixture of ammonia and [NH₄]SH.

Safety

Solutions of “ammonium sulfide” are hazardous as labile sources of toxic hydrogen sulfide.^[2]

References

↑ Meyer B, Ward K, Koshlap K, Peter L “Second dissociation constant of hydrogen sulfide” Inorganic Chemistry, (1983). volume 22, pp. 2345.doi:10.1021/ic00158a027
↑ J.T. Baker: MSDS for Ammonium Sulfide

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[1] Meyer B, Ward K, Koshlap K, Peter L “Second dissociation constant of hydrogen sulfide” Inorganic Chemistry, (1983). volume 22, pp. 2345.doi:10.1021/ic00158a027

[2] J.T. Baker: MSDS for Ammonium Sulfide

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