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A2294612

Germanium , Φ4mm height (thick) 1mm cylindrical GE ≥99.999 % , 7440-56-4

CAS NO.:7440-56-4

Empirical Formula: Ge

Molecular Weight: 72.64

MDL number: MFCD00085310

EINECS: 231-164-3

Pack Size Price Stock Quantity
10PIC RMB142.40 In Stock
50PIC RMB552.00 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 937 °C (lit.)
Boiling point: 2830 °C (lit.)
Density  5.35 g/mL at 25 °C (lit.)
vapor pressure  0Pa at 25℃
storage temp.  Flammables area
solubility  insoluble in H2O, dilute acid solutions, alkaline solutions
form  powder
color  Silver
Specific Gravity 5.35
Resistivity 53000 μΩ-cm, 20°C
Water Solubility  insoluble H2O, HCl, dilute alkali hydroxides; attacked by aqua regia [MER06]
Crystal Structure Cubic, Diamond Structure - Space Group Fd3m
Merck  13,4419
Exposure limits ACGIH: TWA 0.5 ppm(2.5 mg/m3); Ceiling 2 ppm (Skin)
OSHA: TWA 3 ppm
NIOSH: IDLH 30 ppm(250 mg/m3); TWA 3 ppm(2.5 mg/m3); Ceiling 6 ppm(5 mg/m3)
Stability: Stable. Slightly soluble in strong acids. Incompatible with strong oxidizing agents.
LogP 4.14 at 20℃
CAS DataBase Reference 7440-56-4(CAS DataBase Reference)
NIST Chemistry Reference Germanium(7440-56-4)
EPA Substance Registry System Germanium (7440-56-4)

Description and Uses

Germanium is extracted from zinc ores in a very complicated process as it has aqueous properties similar to those of zinc. Once the germanium/zinc mixture has been sufficiently enriched with germanium, it is heated in HCl with Cl2 in order to allow the formation of germanium tetrachloride (GeCl2).

The product can serve as one of the precursors for the formation of highly porous ZrO2:Tb3+ nanophosphor with excellent tunable photoluminescence and photocatalytic activities.

Safety

Symbol(GHS) 
GHS02,GHS08,GHS09
Signal word  Danger
Hazard statements  H228-H361-H373-H410
Precautionary statements  P201-P202-P210-P240-P273-P308+P313
Hazard Codes  F,Xi
Risk Statements  36/37/38-36/38-11
Safety Statements  26-36/39-2
RIDADR  UN 3089 4.1/PG 2
WGK Germany  3
RTECS  LY5200000
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  28053090
Hazardous Substances Data 7440-56-4(Hazardous Substances Data)

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