It can be hydrolyzed to Mg(HS)2, and further hydrolyzed to Mg(OH)2 at higher temperatures. A solution of magnesium hydrosulfide can also be prepared by reacting hydrogen sulfide with magnesium oxide in suspension.
The passage describes the chemical properties and preparation of magnesium hydrosulfide. It explains that it can be broken down into magnesium sulfide through hydrolysis, which then further hydrolyzes to form magnesium hydroxide at higher temperatures. A solution of magnesium hydrosulfide can be created by reacting hydrogen sulfide with magnesium oxide in suspension.