硫化水銀(Ⅱ) 化学特性,用途語,生産方法
解説
硫化水銀(Ⅱ)：HgS(232.66)．黒色，等軸晶系のβ形と，赤色，六方晶系のα形がある．天然産のβ形は黒しん砂とよばれる．塩化水銀(Ⅱ)の水溶液に硫化水素を通じるとβ形が得られる．密度7.7 g cm－3．昇華点446 ℃．β形は準安定な化合物で，濃厚な硫化アルカリ水溶液で処理するか，昇華させるとα形にかわる．天然に産出するα形は，しん砂，丹砂，朱砂とよばれる．密度8.09 g cm－3．昇華点580 ℃．水，エタノール，硫酸などにはほとんど溶けない．硫化アルカリ，王水に可溶．結晶はらせん軸が存在するため大きな旋光能をもつ．有毒ではあるが，きわめて難溶のため，毒性は低い．
用途
顔料 (NITE CHRIP)，医薬品(皮膚病薬)．
化学的特性
Fine, bright-scarlet powder.Insoluble in water and
alcohol.
Cinnabar, HgS, cherry red crystal to 5 mm among snow white rhombic dolomite, CaMg(CO3)2. Wanshan mine, Tongren Pref., Guizhou prov., China.
使用
Mercury(II) sulfide is used in paint, sealing wax and preservatives.
定義
cinnabar: A bright red mineralform of mercury(II) sulphide, HgS,crystallizing in the hexagonal system;the principal ore of mercury. Itis deposited in veins and impregnationsnear recent volcanic rocks andhot springs. The chief sources includeSpain, Italy, and Yugoslavia.
空気と水の反応
Readily oxidized as to be pyrophoric in air [Bretherick 1979. p. 120].
反応プロフィール
Inorganic reducing agents, such as MERCURY(II) SULFIDE, react with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive.
危険性
Highly toxic by ingestion, inhalation, and
skin absorption.
健康ハザード
Acute poisoning can result from inhaling dust concentrations of 1.2-8.5 mg/m 3 in air; symptoms include pain and tightness in chest, coughing, and difficulty in breathing. If ingested, toxicity depends on release of t he Hg ++ ion; chronic mercury poisoning can cause kidney, mental, and nervous disturbances. Dust irritates eyes and frequently causes allergic dermatitis; absorption through skin can cause systemic poisoning.
硫化水銀(Ⅱ) 上流と下流の製品情報
原材料
準備製品