Cesium iodide CAS#7789-17-5

CAS Number: 7789-17-5
Chemical Formula: CsI
Synonyms:

Cesium iodide, 99.9%, for analysis
Cesium iodide, for analysis
CESIUM IODINE

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MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Cesium iodide CAS#7789-17-5

Cesium iodide is a soft material and extremely hygroscopic. Cesium iodide scintillators have been used extensively for indirect x-ray imaging detectors, such as for CT examinations. Cesium iodide is also used to construct electromagnetic shower detector for the CLEO II experiment, which investigates electron-positron annihilation at center-of-mass energies near 10 GeV. Cesium iodide is useful for beam splitters for Far IR spectrophotometers and IR transmission windows.

Cesium iodide Chemical Properties

Melting point	626 °C (lit.)
Boiling point	1280 °C
density	4.51 g/mL at 25 °C (lit.)
refractive index	1.7876
Fp	1280°C
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	soluble in ethanol, methanol, acetone
form	beads
Specific Gravity	4.51
color	White
PH	pH(50g/l, 25℃) : 5.0～9.0
Water Solubility	74 g/100 mL (20 ºC)
Sensitive	Hygroscopic
Merck	14,2014
Exposure limits	ACGIH: TWA 0.01 ppm
Dielectric constant	5.6（Ambient）
Stability:	Stable. Deliquescent.
Major Application	cleaning products cosmetics flavors and fragrances food and beverages personal care
InChI	1S/Cs.HI/h;1H/q+1;/p-1
InChIKey	XQPRBTXUXXVTKB-UHFFFAOYSA-M
SMILES	[I-].[Cs+]
CAS DataBase Reference	7789-17-5(CAS DataBase Reference)
NIST Chemistry Reference	Cesium iodide(7789-17-5)
EPA Substance Registry System	Cesium iodide (CsI) (7789-17-5)

Safety Information

Hazard Codes	Xn,Xi
Risk Statements	36/37/38-42/43-43
Safety Statements	22-36/37-45
RIDADR	UN 3077 9 / PGIII
WGK Germany	2
RTECS	FL0350000
F	8
TSCA	TSCA listed
HazardClass	9
HS Code	28276000
Storage Class	13 - Non Combustible Solids
Hazard Classifications	Aquatic Acute 1 Repr. 2
Toxicity	LD50 i.p. in rats: 1.4 g/kg (Cochran)

Product Application Of Cesium iodide CAS#7789-17-5

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.

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