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HomeProduct name listSilicon monoxide

Silicon monoxide

Synonym(s):Oxosilylene;SI546010;Silicon oxide (SiO)

  • CAS NO.:10097-28-6
  • Empirical Formula: OSi
  • Molecular Weight: 44.09
  • MDL number: MFCD00151536
  • EINECS: 233-232-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-31 13:32:20
Silicon monoxide Structural

What is Silicon monoxide?

Chemical properties

brown or black chunks or powder

Chemical properties

Silicon monoxide (SiO) is another oxide of silicon, used rarely in silicon processing but quite often in thin film, hybrid Ie manufacture. It is useful there because no silicon is available for in situ growth of the dioxide, and it is deposited easily by physical vapor deposition, a process quite similar to the vacuum deposition of aluminum described. Usually the condensed oxide is nonstoichiometric, being a mixture of SiO, Si02, and Si; often, it is designated SiOx .The value of x, which ranges between 1 and 2, is influenced by the deposition conditions.
The SiO source material is prepared by heating Si02 with Si, carbon, and hydrogen, or a hydrocarbon, to reduce the dioxide to the monoxide. Reduction takes place at roughly 1000°C, and SiO is formed in the vapor phase. This temperature is much too low to produce a significant vapor pressure of Si02, so the two oxides may be separated. The monoxide vapor is condensed out and subsequently powdered. This material, which is suitable for evaporation, is available commercially and need not be prepared by the IC manufacturer.

The Uses of Silicon monoxide

Silicon monoxide (SiO) is a commonly used material for a wide variety of applications with the emphasis on IR multilayer coatings and adhesion promotion. SiO sublimes and should preferably be evaporated from resistance heated boats.
AREAS OF APPLICATION
Multilayer coatings especially for the IR, but also the VIS range
Adhesion promoter (VIS, NIR)
Electronics: dielectric, insulating and protective layers
Design: iridescent coatings, colored metallically reflecting coatings e.g. on sun glasses
Web coating: barrier layers on polymer films

The Uses of Silicon monoxide

To form thin surface films for protection of alu- minum coatings, optical parts, mirrors, dielectrics, or insulators.

The Uses of Silicon monoxide

Silicon(II) oxide sputtering target coatings are used for optical applications in reflectors, flood lamps, mirrors, jewelry, and other products. The coatings can reduce reflection in the near infrared range or act as interference layers. It is used in thin-film capacitors, hybrid circuits, semiconductor components and other electronic applications.

Definition

ChEBI: Silicon monoxide is a silicon oxide.

Properties of Silicon monoxide

Melting point: 1870 °C
Boiling point: 1880°C
Density  2.13 g/mL at 25 °C (lit.)
refractive index  1.9800
Flash point: 1880°C
form  powder
color  Black
Specific Gravity 2.13
Water Solubility  Insoluble in water.
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
Merck  14,8496
Stability: Stable.
CAS DataBase Reference 10097-28-6(CAS DataBase Reference)
NIST Chemistry Reference Silicon monoxide(10097-28-6)
EPA Substance Registry System Silylene, oxo- (10097-28-6)

Safety information for Silicon monoxide

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Silicon monoxide

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