Tetraiodosilane

  • Silicon tetraiodide
Formula
I4Si
Structure
Description
White powder

Registry Numbers and Inventories.
CAS
13465-84-4
EC (EINECS/ELINCS)
236-706-2
61 24/25 34 42/43
53 26 36/37/39 45
UN (DOT)
3260
Beilstein/Gmelin
2713 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
I4Si
Formula mass
535.70
Melting point, °C
120.5
Boiling point, °C
288
Vapor pressure, mmHg
0.0043 (25 C0
Density
4.198 g/cm3 (-79 C)
Solubility in water
Insoluble
Heat of vaporization
52.0 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed.
Protection
Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Magnesium, Zinc, Ammonia, Aluminum.
Decomposition
Nature of decomposition products not known.

Fire.
Flash Point,°C
-18
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
May cause harm to the unborn child. Toxic in contact with skin and if swallowed. Causes burns. May cause sensitization by inhalation and skin contact. Target organ(s): Thyroid.
   Ingestion
Toxic if swallowed.
   Inhalation
May be harmful if inhaled.
   Skin
May be harmful if absorbed through the skin.
   Eyes
See Inhalation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Assure adequate flushing of the eyes by separating the eyelids with fingers.

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