High-purity, low-volatility D4 cyclotetrasiloxane optimized for controlled polymerization in silicone synthesis.
Consistent molecular structure ensures reproducible reactivity and predictable rheological performance in downstream formulations.
Low residual catalyst and hydrolyzable impurities, supporting stringent quality requirements for medical-grade and electronics-grade silicones.
Excellent thermal and hydrolytic stability under standard storage and handling conditions.
Compatible with conventional anionic, cationic, and ring-opening polymerization processes for linear and branched polydimethylsiloxanes (PDMS).
Raw material for manufacturing high-molecular-weight PDMS fluids used in personal care emulsions and conditioners.
Monomer feedstock in the production of silicone elastomers for automotive sealing and vibration damping components.
Key building block for optical-grade silicone resins in LED encapsulation and lens coatings.
Intermediate in synthesis of functionalized siloxanes for specialty release coatings and industrial adhesives.
Enabling monomer for biocompatible silicone hydrogels in contact lens and implantable device applications.
| Chemical Type | Cyclotetrasiloxane (D4), octamethylcyclotetrasiloxane |
| Product Form | Liquid |
| Appearance | Clear, colorless, odorless liquid |
| Molecular Weight | 296.5 g/mol |
| Boiling Point (760 mmHg) | 175–177 °C |
| Density at 25 °C | 0.950–0.955 g/cm³ |
| Refractive Index at 25 °C | 1.397–1.399 |
| Water Content (KF) | < 50 ppm |
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