황화 칼슘
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황화 칼슘 속성
- 녹는점
- 2000 °C
- 밀도
- 2.6
- 굴절률
- 2.12
- 용해도
- slightly soluble in H2O; insoluble in ethanol
- 물리적 상태
- 가루
- Specific Gravity
- 2.5
- 색상
- 하얀색
- 수용성
- 물에 약간 용해됩니다. 알코올에 불용성.
- 감도
- Moisture Sensitive
- Merck
- 14,1707
- CAS 데이터베이스
- 20548-54-3(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | Xi,N | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 31-36/37/38-50 | ||
| 안전지침서 | 28-61 | ||
| 유엔번호(UN No.) | UN 3179 4.1/PG 2 | ||
| WGK 독일 | 2 | ||
| TSCA | Yes | ||
| 위험 등급 | 4.3 | ||
| 포장분류 | III | ||
| 기존화학 물질 | KE-04615 |
황화 칼슘 C화학적 특성, 용도, 생산
화학적 성질
CALCIUM SULFIDE is OFF-WHITE POWDER물리적 성질
Calcium sulfide is slightly soluble in water but insoluble in alcohol. It reacts with acids, producing hydrogen sulfide gas. Calcium sulfide is pale yellow to light gray with a bitter taste. It is hygroscopic, producing an odor of H2S in moist air.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.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.
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.2황화 칼슘 준비 용품 및 원자재
원자재
준비 용품
황화 칼슘 공급 업체
글로벌( 171)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
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admin@juchuangchem.com | China | 387 | 58 |
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factory@coreychem.com | China | 29826 | 58 |
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sales@tnjchem.com | China | 34572 | 58 |
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alfa4@alfachem.cn | China | 12755 | 58 |
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1026@dideu.com | China | 9116 | 58 |
| Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503259 +86-19930503259 |
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| ZHEJIANG JIUZHOU CHEM CO., LTD | +86-0576225566889 +86-13454675544 |
admin@jiuzhou-chem.com；jamie@jiuzhou-chem.com；alice@jiuzhou-chem.com | China | 20000 | 58 |
황화 칼슘 관련 검색:
아황산 폴리비닐 알코올 1500 탄화칼슘 실리콘 카바이드 디알루미늄 트리설파이드 마그네슘 질화물 브롬화리튬 황화아연 칼슘 염화물, 헥사수화물 황철광 칼슘 다황화 칼슘
Tin(Ⅱ) sulfide
Calcium polysulfide
Calcium sulfide (CaS), solid soln. with strontium sulfide, bismuth and europium-doped
Calcium sulfide (CaS), cerium-doped
Calcium sulfide (CaS), solid soln. with strontium sulfide, bismuth and copper-doped