Ammonium sulfide

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Ammonium sulfide
IUPAC name Ammonium Sulfide
Other names Diammonium Sulfide
Identifiers
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Properties
[NH4]2S
Molar mass 68.154 g/mol
Boiling point
Hazards
Main hazards Decomposes into toxic H2S gas. Inhalation hazard. Poisonous upon skin contact.
Flash point {{{value}}}
Related compounds
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

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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 pKa 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

  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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