Germanium(IV) iodide

  • Germanium tetraiodide
  • Tetraiodogermane
Formula
GeI4
Structure
Description
Yellow crystalline powder.

Registry Numbers and Inventories.
CAS
13450-95-8
EC (EINECS/ELINCS)
236-613-7
S: 26 36/37/39 45
UN (DOT)
3260
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
GeI4
Formula mass
580.23
Melting point, °C
146
Boiling point, °C
350
Vapor pressure, mmHg
1.6E-7 (25 C)
Density
4.32 g/cm3 (20 C)
Solubility in water
Decomposes
Partition coefficient, pKow
9.97
Heat of vaporization
67.0 kJ/mol

Hazards and Protection.
Storage
Store under dry inert gas. Protect from humidity and water. Keep container tightly sealed. Store in cool, dry conditions in well sealed containers. Protect from exposure to light. Store under lock and key and with access restricted to technical experts or their assistants only.
Protection
Protective work clothing. Chemical protective gloves. Safety glasses or goggles.
Small spills/leaks
Use neutralizing agent. Ensure adequate ventilation.
Stability
Decomposition will not occur if used and stored according to specifications.
Incompatibilities
Oxidizing agents, water/moisture.

Fire.
Fire fighting
Use fire fighting measures that suit the surrounding fire. Wear self-contained respirator. Wear fully protective impervious suit.
Fire potential
Product is not flammable.
Combustion products
Hydrogen iodide

Health.
Exposure effects
Irritating and corrosive effect on eyes, skin and mucous membranes. Germanium compounds generally have a low order of toxicity. High doses have resulted in kidney and bladder injury. The anion and compound reactivity may contribute the greater part of the toxicity. Prolonged exposure to iodides may cause skin rash, running nose, headache and irritation of the mucous membranes. In severe cases the skin may show pimples, boils, redness, black and blue spots, hives and blisters. Iodides are readily diffused across the placenta.

First aid
 
   Ingestion
Seek immediate medical treatment.
   Inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm. Seek immediate medical advice.
   Skin
Immediately wash with water and soap and rinse thoroughly. Seek immediate medical advice.
   Eyes
Rinse opened eye for several minutes under running water. Then consult a doctor.

Transport.
UN number
3260
Response guide
Hazard class
8
Packing Group
III