Atomfair Silicon Tetraiodide Powder (SiI₄), 99% Purity, Approx. -100 Mesh
Product Description
Atomfair silicon tetraiodide (SiI₄) is supplied as a white powder with 99% purity and an approximately -100 mesh specification. It is intended for research on silicon-amide precursor synthesis and microelectronic silicon manufacturing and etching.
Technical Specifications
| PARAMETER DETAILS | |
|---|---|
| Product | Silicon Tetraiodide Powder (SiI4) |
| Material | Silicon Tetraiodide |
| Chemical Formula | SiI4 |
| CAS Number | 13465-84-4 |
| Purity | 99% |
| Specification | Approximately -100 mesh |
| Physical State | Powder |
| Appearance | White powder |
| Molecular Geometry | Tetrahedral |
| Water Reactivity | Reacts with water |
| EC / EINECS Number | 236-706-2 |
| Molar Mass | 535.7034 g/mol |
| Density | 4.198 g/cm³ |
| Melting Point | 120.5 °C |
| Boiling Point | 287.4 °C |
Key Features and Advantages
- 99% purity.
- Approximately -100 mesh specification.
- White powder.
- Molecular Geometry: Tetrahedral.
APPLICATION SCOPE: silicon-amide precursor synthesis and microelectronic silicon manufacturing and etching
DOCUMENTATION: COA and SDS can be provided upon request for batch-specific confirmation.
TAILORED SOLUTIONS FOR RESEARCH
For product specifications and quotation support, contact the Atomfair team.
Silicon tetraiodide powder is highly moisture-sensitive and must be stored under anhydrous conditions to prevent violent decomposition. All handling should be performed in a dry, inert atmosphere to maintain material integrity and safety.
- Moisture Reactivity: Silicon tetraiodide reacts with water, so it must be stored and handled in a completely dry environment.
- Storage Atmosphere: Store under an inert gas such as argon or nitrogen to prevent moisture ingress and degradation.
- Container Integrity: Ensure containers are sealed tightly and kept in a desiccator or glovebox to maintain anhydrous conditions.
- Purity Maintenance: Avoid contamination from moisture or other reactive species to preserve the 99% purity specification.
How does the -100 mesh specification of SiI₄ powder influence its performance in silicon-amide precursor synthesis?
The approximately -100 mesh designation indicates a fine particle size that provides a high surface area relative to volume, accelerating solid-state reaction kinetics and improving homogeneity in precursor synthesis. This specification is standard for achieving consistent conversion rates in stoichiometric reactions involving SiI₄, as stated in the product's technical parameters.
What are the critical handling precautions for SiI₄ given its water reactivity?
Silicon tetraiodide reacts vigorously with water to produce silicic acid and hydrogen iodide, so all handling must be performed under anhydrous inert gas (e.g., argon or nitrogen) in a glovebox or sealed system. The product's white powder form and tetrahedral molecular geometry do not alter this fundamental reactivity; therefore, moisture-free conditions are mandatory to preserve purity and prevent hazardous gas release.
What storage conditions are required to maintain the 99% purity and physical integrity of SiI₄ powder?
SiI₄ should be stored in airtight, moisture-proof containers under inert atmosphere at temperatures well below its melting point of 120.5°C, ideally in a cool, dry environment (e.g., 2–8°C) to prevent caking or decomposition. The density of 4.198 g/cm³ and powder form necessitate that containers remain sealed and undisturbed to avoid segregation and contamination.
Atomfair Silicon Tetraiodide Powder (SiI4) with 99% purity and -100 mesh is evaluated for use in silicon-amide precursor synthesis and microelectronic silicon etching. The powder's water reactivity and moderate melting point require controlled anhydrous handling and thermal management.
Positive
- High Purity for Research: 99% purity ensures minimal impurity interference in precursor synthesis and etching applications.
- Fine Mesh for High Surface Area: Approximately -100 mesh specification provides a large reactive surface area for solid-state reactions.
Trade-offs
- Water Reactivity Requires Anhydrous Handling: SiI4 reacts vigorously with water, necessitating use in inert atmosphere or dry glovebox to prevent decomposition.
- Moderate Melting Point Limits Thermal Processing: Melting point of 120.5°C means the powder will liquefy at moderate temperatures, requiring careful temperature control during processing.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
