브로민화 세슘
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브로민화 세슘 속성
- 녹는점
- 636 °C (lit.)
- 끓는 점
- 1300 °C
- 밀도
- 4.44 g/mL at 25 °C (lit.)
- 굴절률
- 1.6984
- 인화점
- 1300°C
- 용해도
- H2O: 3 M at 20 °C, 투명, 무색
- 물리적 상태
- 염주
- Specific Gravity
- 4.44
- 색상
- 하얀색
- 수용성
- 55g/100mL(20℃)
- 감도
- Hygroscopic
- Merck
- 14,2009
- 안정성
- 안정적인.
- CAS 데이터베이스
- 7787-69-1(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | Xi | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 36/37/38 | ||
| 안전지침서 | 26-36 | ||
| WGK 독일 | 3 | ||
| RTECS 번호 | FK9275000 | ||
| TSCA | Yes | ||
| HS 번호 | 28275900 | ||
| 독성 | LD50 i.p. in rats: 1.4 g/kg (Cochran) | ||
| 기존화학 물질 | KE-05431 |
브로민화 세슘 C화학적 특성, 용도, 생산
개요
Cesium bromide is a colorless crystal with the formula CsBr. It is a moderately water soluble crystalline Cesium source that decomposes to Cesium oxide on heating. Most metal bromine compounds are water-soluble and are used in water treatment, chemical analysis, and ultra-high purity for certain crystal growth applications.화학적 성질
Cesium bromide is a colourless crystals. It has been used in protein crystallization for anamolous scattering.
용도
Cesium bromide (CsBr) crystals are used in scintillation counters to detect radiation. The compound is also used to coat the inside of fluorescent screens.제조 방법
Caesium bromide can be prepared via following reactions:Neutralization:
CsOH (aq) + HBr (aq) → CsBr (aq) + H2O (l)
Cs2(CO3) (aq) + 2 HBr (aq) → 2 CsBr (aq) + H2O (l) + CO2 (g)
Direct synthesis:
2 Cs (s) + Br2 (g) → 2 CsBr (s)
The direct synthesis is a vigorous reaction of caesium with other halogens. Due to its high cost, it is not used for preparation.
Safety Profile
Moderately toxic by intraperitoneal route. See also CESIUM and BROMIDES. When heated to decomposition it emits toxic fumes of Br-.Purification Methods
It is very soluble in H2O, soluble in EtOH but insoluble in Me2CO. Dissolve it in the minimum volume of H2O, filter and precipitate it by adding Me2CO. Filter off the solid and dry it at 100o. Also recrystallise it from water (0.8mL/g) by partial evaporation in a desiccator.Structure and conformation
The space lattice of CsBr(Cesium bromide) belongs to the cubic system, and its cesium chloride structure has a lattice constant of a=0.429 nm.브로민화 세슘 준비 용품 및 원자재
원자재
준비 용품
브로민화 세슘 공급 업체
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