13465-84-4

Basic information

• Product Name: SILICON (IV) IODIDE
• Synonyms: SILICON IODIDE;SILICON (IV) IODIDE;SILICON TETRAIODIDE;TETRAIODOSILANE;SiI4;Silane, tetraiodo-;tetraiodo-silan;Siliconiodidemetalsbasisoffwhitepowder
• CAS NO: 13465-84-4
• Molecular Formula: I₄Si
• Molecular Weight: 535.7
• EINECS: 236-706-2
• Product Categories: metal halide
• Mol File: 13465-84-4.mol
• Article Data: 4

Chemical Properties

• Melting Point: 120 °C
• Boiling Point: 287.4 °C
• Flash Point: 287.5°C
• Appearance: White/Lumps
• Density: 4.198
• Vapor Pressure: 0.00428mmHg at 25°C
• Refractive Index: 1.855
• Water Solubility: Soluble in organic solvents. Insoluble in water.
• Sensitive: Moisture Sensitive
• CAS DataBase Reference: SILICON (IV) IODIDE(CAS DataBase Reference)
• NIST Chemistry Reference: SILICON (IV) IODIDE(13465-84-4)
• EPA Substance Registry System: SILICON (IV) IODIDE(13465-84-4)

Safety Data

• Hazard Codes: T
• Statements: 24/25-34-42/43-61
• Safety Statements: 26-36/37/39-45-53
• RIDADR: 3260
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 13465-84-4(Hazardous Substances Data)

Usage

Description

Silicon Iodide is the iodide of silicon. It is a precursor to silicon amide. It is also applied in the manufacture and etching of silicon in microelectronics. Selective area regrowth of silicon-doped GaAs has been successfully achieved by chemical beam epitaxy (CBE) on dry etched trench structures. Silicon tetraiodide is useful for the above process in abrupt to manipulate metal-semiconductor field effect transistor (MESFET) and heterostructure field effect transistor (HFET). Silicon iodide can also be reduced as the source to form pure silicon and hydrogen iodide.

Reference

Izumi, Shigekazu, et al. Journal of Crystal Growth 175.175(1997): 404-410. http://jes.ecsdl.org/content/104/11/663.short https://en.wikipedia.org/wiki/Silicon_tetraiodide

Chemical Properties

White crystals. Noncombustible.

Uses

Silicon(IV) iodide is used as a precursor to prepare silicon amides. It finds application in the manufacture and etching of silicon in microelectronics.

InChI:InChI=1/I4Si/c1-5(2,3)4

Upstream product

• 10034-85-2 hydrogen iodide 
• 1333-74-0 hydrogen 
• 7440-21-3 silicon 
• 112926-00-8 silica gel 
• 7784-23-8 aluminium(III) iodide 
• 13986-26-0 zirconium(IV) iodide 
• 7553-56-2 iodine 
• 7789-66-4 tetrabromosilane 
• 7783-29-1 n-tetrasilane 
• 75-47-8 iodoform 
• 7681-65-4 copper(l) iodide 
• 7789-33-5 iodine(I) bromide 
• 13510-43-5 hexaiododisilane 
• 13977-54-3 diiododichlorosilane 

Downstream Products

• 78-10-4 tetraethoxy orthosilicate 
• 13779-92-5 niobium(V) iodide 
• 7440-21-3 silicon 
• 14693-81-3 tantalum pentaiodide 
• 16961-83-4 fluorosilicic acid 
• 10026-04-7 tetrachlorosilane 
• 13465-85-5 iodo trichloro silane 
• 13977-54-3 diiododichlorosilane 
• 13932-03-1 triiodochlorosilane 
• 7553-56-2 iodine 
• 112926-00-8 silica gel 
• 229467-45-2 (2-tert-butyl-6-methylphenyl-O)2TiI₂ 
• 7440-67-7 zirconium 
• 13536-76-0 tribromo iodosilane 

Relevant articles and documents

Chemical vapour transport of intermetallic phases, II: The system Fe-Si

Five phases exist in the system Fe-Si: Fe3Si, Fe2Si, Fe5Si3, FeSi, α- and β-FeSi2. All phases could be prepared by chemical transport with iodine as transport agent in the temperature range between T1 (700 °C) and T2 (1030 °C). In a attempted systematic clarification of the chemical transport reactions of all phases in the system, the effective transport equilibria were determined. Thermodynamic calculations show satisfactory agreement between calculation and experiment.

Reaction of Silicon Difluoride with Halogens: a Reinvestigation

Reactions of SiF2 with halogens have been reinvestigated by both co-condensation and gas-phase methods.The co-condensation method yields a number of fluorohalogenosilanes including mono-, di-, and higher silane derivatives.These compounds contain SiF, SiF2, and SiF3 units.The reactivity towards SiF2 decreases from chlorine through bromine to iodine.While chlorine and bromine give rise to a number of fluorohalogenosilanes, iodine yields only the monosilane derivatives.In contrast, the gas-phase reaction do not progress to any appreciable extent.The products have been characterized by mass spectrometry and 19F and 29Si n.m.r. spectroscopy.Many have been identified for the first time.