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Hydrogen disulfide
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<p>Hydrogen disulfide is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula H2S2. This <a href="/facts/Hydrogen_chalcogenide/pNCrhmwX">hydrogen chalcogenide</a> is a pale yellow volatile liquid with a camphor-like odor. It decomposes readily to <a href="/facts/Hydrogen_sulfide/UbCqjMMk">hydrogen sulfide</a> (H2S) and elemental <a href="/facts/Sulfur/IK0amTfM">sulfur</a>. </p>