Cesium iodide (HCID 24601)

Überblick

X-ray image intensifier

Namen und Bezeichner

Bevorzugter Name: Cesium iodide
IUPAC: cesium iodide
Lokaler Name: Caesiumiodid
Englischer Name: Cesium iodide
Summenformel: CsI
Molmasse: 259.81

Namen und Synonyme

CESIUM IODIDE7789-17-5Caesium iodideCesium iodide (CsI)Cesium monoiodideU1P3GVC56LNSC-15199DTXSID3064859RefChem:124640DTXCID9048063232-145-2Cesiumiodide

Weitere Namen anzeigen

CESIUM IODINECesium iodide, 99.9%, for analysisCaesiumiodideCesiumIodideGrCaesium lodidecesiummonoiodidedicesiumdiiodideCESIUM IODIDE AR

Dicesium diiodidecesium;iodideTricesium triiodideCesium iodide (Cs2I2)Cesium iodide (Cs3I3)UNII-U1P3GVC56LEINECS 232-145-2MFCD00010962

Datenbank-Bezeichner

CAS: 7789-17-5
PubChem CID: 24601
DTXSID: DTXSID3064859
UNII: U1P3GVC56L
EC Number: 232-145-2
Nikkaji: J43.757C

Eigenschaften

Berechnete Struktureigenschaften

Polarare Oberfläche (TPSA): 0 Å²
H-Brücken-Donoren: 0
H-Brücken-Akzeptoren: 1
Frei drehbare Bindungen: 0
Schwere Atome: 2
Formalladung: 0
Komplexität: 2

Experimentelle und physikochemische Eigenschaften

Chemical ClassesMetals -> Metals, Inorganic Compounds

SpringerMaterials Propertiesdielectric constant

Density4.51 @25 °C

Boiling Point1280 °C @760 [mm Hg]

Melting Point632 °C

Physical DescriptionDeliquescent solid; [Merck Index] White hygroscopic solid; Odorless; [Alfa Aesar MSDS]

Physikochemische Eigenschaften

Schmelzpunkt: 626 °C · 626 °C (lit.)
Siedepunkt: 1280 °C · 1280 °C
Dichte: 4.51 g/mL · 4.51 g/mL at 25 °C (lit.)
Brechungsindex: 1.7876 · 1.7876
Flammpunkt: 1280 °C · 1280°C
storage temp.: Keep in dark place,Inert atmosphere,Room temperature
Löslichkeit: soluble in ethanol, methanol, acetone
Aggregatzustand: beads
Wichte: 4.51 · 4.51
Farbe: White
PH: pH(50g/l, 25℃) : 5.0～9.0
Wasserlöslichkeit: 74 g/100 · 74 g/100 mL (20 ºC)
Spezifische Wärmekapazität: 0.2 J/ · Cp(crystal): 0.2 J/(g·K), at 25℃
Merck: 14 · 14,2014
Dielectric constant: 5.6 · 5.6(Ambient)
Stabilität: Stable. Deliquescent.
Major Application: cleaning productscosmeticsflavors and fragrancesfood and beveragespersonal care
InChI: 1S/Cs.HI/h;1H/q+1;/p-1
InChIKey: XQPRBTXUXXVTKB-UHFFFAOYSA-M
SMILES: [I-].[Cs+]
CAS Datenbank: 7789 · 7789-17-5(CAS DataBase Reference)
NIST chemische Informationen: Cesium iodide(7789-17-5)
EPA chemische Informationen: Cesium iodide (CsI) (7789-17-5)

Sicherheit und Regulatorisches

GHS-Klassifizierung

GHS Classification · 5 Einträge

This chemical does not meet GHS hazard criteria for 33% (30 of 91) of reports.

Warning

H315 (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.

Gefahrenhinweise

Regulatory Information · 3 Einträge

Chemical: Cesium iodide (CsI)

Status: Active Update: 16-05-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/12840

Caesium iodide: Does not have an individual approval but may be used under an appropriate group standard

Other Safety InformationEvaluation - Cesium salts

Hazards SummaryA skin and strong eye irritant; May cause skin sensitization; Harmful by ingestion; [Alfa Aesar MSDS] See Cesium. See Iodine for the TLV of Iodides.

Hazard Classes and CategoriesSkin Irrit. 2 (48.4%)

Sicherheit und Schutzausrüstung

Threshold Limit Values (TLV)0.01 [ppm], inhalable fraction and vapor (iodides)

Protective Action Criteria (PAC) · 3 Einträge

7.2 [mg/m3]

79 [mg/m3]

470 [mg/m3]

Toxikologische Informationen

Adverse EffectsSkin Sensitizer - An agent that can induce an allergic reaction in the skin.

Sicherheitsdaten

F: 8
wgk: 2
tsca: TSCA listed
ridadr: UN 3077 9 / PGIII
hs_code: 28276000
RTECS-Nr.: FL0350000
risk_code: 36/37/38-42/43-43
Toxizität: LD50 i.p. in rats: 1.4 g/kg (Cochran)
hazard_code: Xn,Xi
safety_code: 22-36/37-45
hazard_class: 9
Speicherklasse: 13 - Non Combustible Solids
Hazard Classifications: Aquatic Acute 1Repr. 2

Chemie und Industrie

Verwendung und Herstellung

UsesUsed in prisms for infrared spectroscopy, x-ray fluorescent screens, and scintillation counters; [Merck Index]

General Manufacturing InformationCesium iodide (CsI): ACTIVE

Anwendungen · 1 Eintrag

VerwendenCesium 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.