세슘 아이오다이드
세슘아이오다이드 · 세슘요오드화합물 · 요오드화세슘 · Caesium iodide · CESIUM IODINE · Cesium iodide, 99.9%, for analysis · CESIUM IODIDE · Caesiumiodide
식별자 및 물리적 특성
| CAS No. | 7789-17-5 |
|---|---|
| 분자식 | CsI |
| 평균 분자량 | 259.8099 g/mol |
| 단동위원소 질량 | 259.8099249 g/mol |
| SMILES | [Cs+].[I-] |
| InChIKey | XQPRBTXUXXVTKB-UHFFFAOYSA-M |
| PubChem CID | 24601 |
| EC No. | 232-145-2 |
| DTXSID | DTXSID3064859 |
| 현지명 | 세슘 아이오다이드 |
화학 및 물리적 성질
| 극성 표면적 | 0 |
|---|---|
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 1 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 2 |
| 형식 전하 | 0 |
| 복잡도 | 2 |
| 물질 분류 | Metals -> Metals, Inorganic Compounds |
| SpringerMaterials Properties | dielectric constant |
| 밀도 | 4.51 @25 °C4.51 g/mL at 25 °C (lit.) |
| 끓는 점 | 1280 °C @760 [mm Hg] |
| 녹는점 | 632 °C626 °C (lit.) |
| Physical Description | Deliquescent solid[Merck Index] White hygroscopic solidOdorless[Alfa Aesar MSDS] |
| 굴절률 | 1.7876 |
| 인화점 | 1280°C |
| 저장 조건 | Keep in dark place,Inert atmosphere,Room temperature |
| 용해도 | soluble in ethanol, methanol, acetone |
| 물리적 상태 | 염주 |
| 비중 | 4.51 |
| 색상 | 하얀색 |
| pH | pH(50g/l, 25℃) : 5.0～9.0 |
| 용해도 | 74g/100mL(20℃) |
| 비열 | Cp(crystal): 0.2 J/(g·K), at 25℃ |
| Merck | 14,2014 |
| 유전율 | 5.6(Ambient) |
| 안정성 | 안정적입니다. 쉽게 용해됩니다. |
| 주요 응용 | 청소용품화장품향료 및 향음식 및 음료개인 위생 관리 |
| InChI | 1S/Cs.HI/h1H/q+1/p-1 |
| InChIKey | XQPRBTXUXXVTKB-UHFFFAOYSA-M |
| SMILES | [I-].[Cs+] |
| NIST | Cesium iodide(7789-17-5) |
| EPA | Cesium iodide (CsI) (7789-17-5) |
화학적 성질
white crystalline powder
안전 및 규제
| GHS 분류 | This chemical does not meet GHS hazard criteria for 33% (30 of 91) of reports.WarningH315 (48.4%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P272, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P333+P317, P337+P317, P362+P364, P391, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 91 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| 규제 정보 | Chemical: Cesium iodide (CsI)Status: Active Update: 16-05-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/12840Caesium iodide: Does not have an individual approval but may be used under an appropriate group standard |
| 기타 안전 정보 | Evaluation - Cesium salts |
| 유해성 요약 | A skin and strong eye irritantMay cause skin sensitizationHarmful by ingestion[Alfa Aesar MSDS] See Cesium. See Iodine for the TLV of Iodides. |
| Hazard Classes and Categories | Skin Irrit. 2 (48.4%) |
| Threshold Limit Values (TLV) | 0.01 [ppm], inhalable fraction and vapor (iodides) |
| Protective Action Criteria (PAC) | 7.2 [mg/m3]79 [mg/m3]470 [mg/m3] |
| 유해 작용 | Skin Sensitizer - An agent that can induce an allergic reaction in the skin. |
| 수질 위해 등급(WGK) | 2 |
| TSCA 등재 상태 | TSCA listed |
| RTECS 번호 | FL0350000 |
| 운송 번호(UN) | UN 3077 9 / PGIII |
| 독성 | LD50 i.p. in rats: 1.4 g/kg (Cochran) |
| 관세 코드 | 28276000 |
| 위험 문구(R) | 36/37/38-42/43-43 |
| 위험 표시 | Xn,Xi |
| 안전 문구(S) | 22-36/37-45 |
| 위험 등급 | 9Aquatic Acute 1Repr. 2 |
| 기존화학 물질 | KE-05442 |
| F 고인화성물질 | 8 |
| 저장 분류 | 13 - Non Combustible Solids |
용도
용도
Cesium iodide (CsI) is a kind of ionic compound that has been widely used as scintillators in many areas such as X-ray image intensifier tubes, photocathodes, and display devices. Cesium iodide is used in scintillation counters(Geiger counters) to measure levels of external radiation. It is also useful as a "getter" to remove air molecules remaining in vacuum tubes. Cesium Iodide is a material with high γ-ray stopping power due to its relative high density and atomic number. For scintillation counting, it is used either in its un-doped form or doped with sodium or thallium. CsI is resistant to thermal and mechanical shock. The physical characteristics of CsI are independent of the activator used. Compared to NaI(Tl), it is relatively soft and plastic, and does not cleave. Because it has no cleavage plane, it is quite rugged-which makes it well-suited for well logging, space research or other applications where severe shock conditions are encountered.
일반 설명
Cesium iodide is a simple ionic salt. It has the capacity to undergo second order transformation from cubic B2 structure to body-centered tetragonal structure at low pressures. It is mostly used as input screens of X-ray image intensifiers.