Heptamethyldisilazane (CAS 920-68-3): Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
Heptamethyldisilazane (HMDS) (CAS 920-68-3) is a premium organosilicon compound with the molecular formula C7H21NSi2. Widely used as a silylation agent, it features:
| Parameter | Specification |
|---|---|
| Appearance | Colorless to pale yellow liquid |
| Purity | ≥99% |
| Boiling Point | 125-127°C |
| Density | 0.774 g/cm³ |
| Flash Point | 23°C |
| Storage | 2-8°C under inert gas |
2. Key Applications of Heptamethyldisilazane
2.1 Semiconductor Manufacturing
Enables moisture-resistant surface passivation for microelectronic components.
2.2 Pharmaceutical Synthesis
Protects reactive hydroxyl groups in API intermediates during drug development.
2.3 Nanomaterial Engineering
Facilitates functionalization of silica nanoparticles for enhanced dispersion.
3. Performance Comparison with Similar Reagents
| Parameter | HMDS | TMDS | Hexamethyldisiloxane |
|---|---|---|---|
| Reaction Speed | Fast | Moderate | Slow |
| Thermal Stability | 250°C | 200°C | 180°C |
| Byproduct Formation | Low | Medium | High |
4. Industrial Use Cases
4.1 MEMS Device Fabrication
Applied in anti-stiction layers for micro-electromechanical systems.
4.2 HPLC Column Derivatization
Used for silica stationary phase modification in chromatography.
5. Verified Customer Success Stories
-
ABC Semiconductors (Taiwan)
Challenge: Yield loss due to wafer surface contamination
Solution: HMDS-based vapor priming process
Result: 22% yield improvement in 14nm chip production -
EuroPharma Solutions (Germany)
Challenge: Drug intermediate hydrolysis during storage
Solution: HMDS protection at synthesis stage
Result: Extended shelf life by 18 months
6. Request Customized Solutions
Optimize your process with our technical-grade HMDS (CAS 920-68-3):
Email: info@vivalr.com
Tel: (86) 15866781826
Request SDS, COA, or bulk pricing today.
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