Chlorodimethylsilane (CAS 1066-35-9) Ultimate User Guide 2025
Table of Contents
- 1. Product Overview & Specifications
- 2. Key Applications & Industrial Uses
- 3. Performance Comparison with Alternatives
- 4. Operational Best Practices
- 5. Real-World Case Studies
- 6. Technical Support & Inquiry
1. Product Overview & Specifications
Chlorodimethylsilane (CAS 1066-35-9), also known as Dimethylchlorosilane, is a reactive organosilicon compound with the formula (CH3)2SiHCl. Widely used as a key intermediate in silicone production and surface modification.
| Parameter | Specification |
|---|---|
| CAS Number | 1066-35-9 |
| Molecular Formula | C2H7ClSi |
| Molecular Weight | 94.62 g/mol |
| Appearance | Colorless liquid |
| Boiling Point | 35-36°C |
| Density | 0.87 g/cm3 at 25°C |
2. Key Applications & Industrial Uses
Core Applications:
- Silicone Intermediate: Primary building block for dimethicones and silicone elastomers
- Surface Modification: Hydrophobic coatings for glass, metals, and polymers
- Pharmaceutical Synthesis: Protecting group in nucleoside/drug manufacturing
- Adhesive Formulations: Crosslinking agent in RTV silicone adhesives
3. Performance Comparison with Alternatives
| Property | Chlorodimethylsilane | Trimethylchlorosilane | Methyltrichlorosilane |
|---|---|---|---|
| Reactivity | Moderate | Low | High |
| Hydrolysis Rate | 3.2 min (pH 7) | 8.5 min | 0.7 min |
| Preferred Applications | Controlled modification | Bulky groups | Dense crosslinking |
4. Operational Best Practices
Handling Protocols:
- Store under nitrogen atmosphere at ≤25°C
- Use anhydrous conditions for reactions
- Recommended PPE: Chem-resistant gloves, face shield
5. Real-World Case Studies
Case 1: High-Performance Silicone Production
Client: Leading Asian silicone manufacturer
Challenge: Needed to improve thermal stability of silicone rubber beyond 300°C
Solution: Optimized chlorodimethylsilane ratio in prepolymer synthesis
Result: 40% improvement in high-temperature resistance
Case 2: Advanced Electronics Coating
Client: European semiconductor equipment company
Challenge: Moisture-induced corrosion in microcircuits
Solution: Vapor-phase deposition using chlorodimethylsilane
Result: 99.8% humidity resistance at 85°C operational conditions
6. Technical Support & Inquiry
Our technical team provides:
- Custom formulation assistance
- Process optimization consulting
- Quality certification support (REACH, ISO)
Contact our specialists for tailored solutions:
Email: info@vivalr.com
Phone: (86) 15866781826



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