20548-54-3[Ca+2].[S-2]AGVJBLHVMNHENQ-UHFFFAOYSA-NCalcium sulfide is an organic molecular entity.
20548-54-3DTXSID30885140CHEBI:81055Warning
H315: Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, and P501 (click each P-code to see the statement)
Danger
H228 (54.9%): Flammable solid [Danger Flammable solids]
P210, P240, P241, P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P391, P403+P233, P405, and P501 (click each P-code to see the statement)
Chemical: Calcium sulfide (CaS)
Calcium sulphide: Does not have an individual approval but may be used under an appropriate group standard
Flam. Sol. 1 (54.9%)
Hazardous to the aquatic environment (acute) - category 1
STOT SE 3
1.2 [mg/m3]
13 [mg/m3]
79 [mg/m3]
Used in phosphors, lubricant additives, and luminous paints; Has been used in wound treatment (veterinary medicine); [Merck Index]
Painting (Pigments, Binders, and Biocides) [Category: Paint]
解説硫化カルシウム,CaS(72.14).酸化カルシウムを赤熱して硫化水素を通じると得られる.無色の立方晶系結晶.密度2.56 g cm-3.2000 ℃ 以上で分解する.乾燥空気中で酸化されてチオ硫酸カルシウムを生じる.湿った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.水に微溶.水溶液は加水分解して硫化水素カルシウムCa(HS)2と水酸化カルシウムを生じ,アルカリ性を示す.酸を作用させると硫化水素を発生する.ほかに四硫化物,五硫化物がある.脱毛作用があるので皮なめしに用いられる.そのほか,潤滑油添加剤,電子エミッター材料,蛍りん光体としてペイントやニスの成分などに用いられる.また,多硫化物は農業用殺虫殺菌剤(石灰硫黄合剤)として用いられる.
天然物の起源Calcium sulfide occurs in nature as the mineral oldhamite. It has several applications. The ‘luminous’ calcium sulfide is used in phosphors, luminous paints and varnishes. Calcium sulfide also is used as an additive to lubri cants; and as a flotation agent in ore extraction.
使用CALCIUM SULFIDE is used in electron emitters. Luminous CaS used for making luminous paints or varnishes.
一般的な説明Crystal structure of CaS is cubic. Electrical conductivity of calcium sufide in the temperature range of 650oC-1000oC was studied in great detail. It was concluded that CaS could be used as a potential electrolyte in a sulfur concentration cell.2
読み込み中…
化学的特性CALCIUM SULFIDE is OFF-WHITE POWDER
使用用途硫化カルシウムの主な使用用途は、潤滑油の添加物、電子エミッターの材料、塗料、ニス、食物保存剤などです。また、脱毛作用を利用して皮のなめしに使われます。処分場での埋め立て材にも使われており、石膏製ギプスのリサイクルや石炭製品の処理過程などでも用いられている物質です。 電子エミッターの材料としては、特に純度の高い硫化カルシウムに希土類元素を加えて、エレクトロルミネッセンス材料として使用する用途があります。また、四硫化物や五硫化物などの多硫化物は、農業用殺虫・殺菌剤への用途もあります。
製造方法Calcium sulfide can be prepared by the direct reaction of the elements, calcined in an inert atmosphere, at a 1:1.05 molecular ratio: Ca+S+heat→CaS This white material crystallizes in a cubic structurelike rock salt and the bonding is highly ionic. This is consistent with its description as an ionic solid. CaS can also be produced by the “carbothermic reduction” of calcium sulfate, which entails the conversion of carbon, usually as charcoal, to CO2: CaSO4+ 2C→CaS+ 2CO2 This can react further: 3CaSO4+ CaS→4CaO+ 4SO2 Thus, this type of preparation cannot be used to prepare a pure CaS salt. Calcium sulfide is available commercially as the pure sulfide as well as the polysulfide due to its extensive usage in the past as an insecticide both agriculturally and in home gardens.