황화 칼슘
황화칼슘 · 황화칼슘(CALCIUMSULFIDE) · 칼슘설파이드 · Baumol · Oldhamite · C.I. 77245 · thioxocalcium · CALCIUM SULFIDE
식별자 및 물리적 특성
| CAS No. | 20548-54-3 |
|---|---|
| 분자식 | CaS |
| 평균 분자량 | 72.15 g/mol |
| 단동위원소 질량 | 71.934662 g/mol |
| SMILES | [Ca+2].[S-2] |
| InChIKey | AGVJBLHVMNHENQ-UHFFFAOYSA-N |
| PubChem CID | 10197613 |
| ChEBI | CHEBI:81055 |
| EC No. | 243-873-5 |
| DTXSID | DTXSID30885140 |
| 현지명 | 황화 칼슘 |
화학 및 물리적 성질
| 극성 표면적 | 1 |
|---|---|
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 1 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 2 |
| 형식 전하 | 0 |
| 복잡도 | 0 |
| 물질 분류 | Metals -> Metals, Inorganic Compounds |
| 화장품 | Depilatory |
| SpringerMaterials Properties | thermal expansion coefficient |
| 밀도 | 2.58 @25 °C2.6 |
| 녹는점 | 2524 °C2000 °C |
| Physical Description | White solid when pureCrude and luminous forms may be yellowish to pale-greyOdor of hydrogen sulfide in moist air[Merck Index] Colorless powder with an odor of rotten eggs[Alfa Aesar MSDS] |
| 굴절률 | 2.12 |
| 용해도 | slightly soluble in H2Oinsoluble in ethanol |
| 물리적 상태 | 가루 |
| 비중 | 2.5 |
| 색상 | 하얀색 |
| 용해도 | 물에 약간 용해됩니다. 알코올에 불용성. |
| 비열 | Cp(crystal): 0.65 J/(g·K), at 25℃ |
| Merck | 14,1707 |
| 화장품 원료 기능 | 제모제 |
| InChI | 1S/Ca.S |
| InChIKey | JGIATAMCQXIDNZ-UHFFFAOYSA-N |
| SMILES | S=[Ca] |
| EPA | Calcium sulfide (CaS) (20548-54-3) |
화학적 성질
CALCIUM SULFIDE is OFF-WHITE POWDER
안전 및 규제
| GHS 분류 | WarningH315: 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)DangerH228 (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) |
|---|---|
| 규제 정보 | Chemical: Calcium sulfide (CaS)Calcium sulphide: Does not have an individual approval but may be used under an appropriate group standard |
| 기타 안전 정보 | IMAP assessments - Soluble Sulfide Salts: Human health tier II assessment |
| 유해성 요약 | Oxidizes in dry air and decomposes in moist air[Merck Index] Decomposed by waterA skin and strong eye irritant[Alfa Aesar MSDS] |
| Hazard Classes and Categories | Flam. Sol. 1 (54.9%)Hazardous to the aquatic environment (acute) - category 1STOT SE 3 |
| Protective Action Criteria (PAC) | 1.2 [mg/m3]13 [mg/m3]79 [mg/m3] |
| 수질 위해 등급(WGK) | 2 |
| TSCA 등재 상태 | TSCA listed |
| 운송 번호(UN) | UN 3179 4.1/PG 2 |
| 위험 문구(R) | 31-36/37/38-50 |
| 위험 표시 | Xi,N |
| 안전 문구(S) | 28-61 |
| 포장분류 | III |
| 위험 등급 | 4.3Aquatic Acute 1Eye Irrit. 2Flam. Sol. 1Skin Irrit. 2STOT SE 3 |
| 기존화학 물질 |
용도
출처
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.
용도
CALCIUM SULFIDE is used in electron emitters. Luminous CaS used for making luminous paints or varnishes.
일반 설명
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
제조 및 합성 방법
제조 방법
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.