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A2297212

Cesium iodide , 99.9%metalsbasis , 7789-17-5

Synonym(s):
Cesium monoiodide

CAS NO.:7789-17-5

Empirical Formula: CsI

Molecular Weight: 259.81

MDL number: MFCD00010962

EINECS: 232-145-2

Pack Size Price Stock Quantity
5G RMB38.40 In Stock
25G RMB135.20 In Stock
100G RMB439.20 In Stock
500G RMB1799.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 626 °C (lit.)
Boiling point: 1280 °C
Density  4.51 g/mL at 25 °C (lit.)
refractive index  1.7876
Flash point: 1280°C
storage temp.  Keep in dark place,Inert atmosphere,Room temperature
solubility  soluble in ethanol, methanol, acetone
form  beads
color  White
Specific Gravity 4.51
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.
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)

Description and Uses

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.

Safety

Symbol(GHS) 
GHS08,GHS09
Signal word  Warning
Hazard statements  H361fd-H400
Precautionary statements  P201-P202-P273-P280-P308+P313-P391
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
8
TSCA  Yes
HS Code  28276000
Toxicity LD50 i.p. in rats: 1.4 g/kg (Cochran)

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