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解説
SrS(119.69)．炭酸ストロンチウムを赤熱して硫化水素を通じると，白色の粉末として得られる．また，高温で硫酸ストロンチウムを炭素で還元すると，無色の立方晶系結晶が得られる．純粋な結晶はりん光を発する．密度3.70 g cm－3(15 ℃)．融点2000 ℃ 以上．空気中では水分と二酸化炭素を吸収して硫化水素を発生する．水に不溶だが，熱水には加水分解して硫化水素ストロンチウムと水酸化ストロンチウムとなって溶ける．2SrS ＋ 2H2O → Sr(HS)2 ＋ Sr(OH)2酸と反応して硫化水素を発生する．エタノールに可溶．皮革の脱毛剤，蛍光塗料，EL素子の発光材料などに用いられる．[CAS 1314-96-1]
森北出版「化学辞典（第2版）
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化学的特性
Strontium sulfide is a grey powder giving a hydrogen sulphide-like smell in the air. It is insoluble in cold water, and decomposes in hot water and acid. In the wet air can decompose to H2S, can also be oxidised to SrSO4. heating for 3 hours to light red, and water vapour contact with the formation of SrO, SrSO4, H2 and SO2. reaction with acid to produce H2S.
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使用
Strontium sulfide (SrS) smells like rotten eggs. It is used as a depilatory to remove hair from skin and hides or In luminous paints.
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製造方法
Strontium sulfide can be
prepared by the direct reaction of the elements, calcined
in an inert atmosphere, at a 1:1.05 molecular ratio:
Sr＋S＋heat→SrS
SrS can also be produced by the “carbothermic reduction”
of calcium sulfate, which entails the conversion of
carbon, usually as charcoal, to CO2:
SrSO4＋2C→SrS＋ 2CO2
This can react further:
3SrSO4＋SrS→4SrO＋ 4SO2
A mixture of oxide-sulfide is the result. Thus, this
type of preparation cannot be used to prepare a pure
SrS salt.
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調製方法
Strontium sulfide, grayish-white solid (thermodynamic Ksp 500) reactive with water to form strontium hydrosulfide, Sr(SH)2, solution. Strontium hydrosulfide is formed (1) by reaction of strontium sulfide and H2O, (2) by saturation of strontium hydroxide solution with H2S. Strontium polysulfides are formed by boiling strontium hydrosulfide with sulfur.
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一般的な説明
Gray powder with an odor of H2S in moist air.
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空気と水の反応
Slowly releases H2S in moist air.
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反応プロフィール
STRONTIUM SULFIDE reacts vigorously with acids to release hydrogen sulfide gas. May react exothermically with oxidizing agents including inorganic oxoacids, organic peroxides and epoxides, and inorganic peroxides to generate toxic gases.
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危険性
Moderate fire and explosion risk. Irritant to
skin and tissues.
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健康ハザード
ACUTE/CHRONIC HAZARDS: Irritant to skin and tissue. Moderate fire hazard and explosion risk.
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安全性プロファイル
Poison by inhalation and ingestion. Ready decomposes to yield H2S. Incompatible with lead(1V) oxide. When heated to decomposition it emits toxic fumes of SOx. See also SULFIDES and STRONTIUM COMPOUNDS.
