D4 Cyclo-2244 Cyclomethicone Fluid
| Chemical Name: | Polydimethylsiloxane Fluid / PDMS Silicone Oil |
| Product Category: | Cyclomethicones – Silicone Fluids |
| Structural Formula: |  |
| CAS No.: | CAS No. 63148-62-9 |
| EINECS: | 203-492-7 |
| Molecular Formula: | C6H18OSi2 |
| Molecular Weight: | 162.38 g/mol |
D4 Cyclo-2244 Cyclomethicone Fluid
(D4) Cyclo‐2244-Cyclomethicone is a polydimethyl‐cyclosiloxane primarily composed of octamethylcyclotetrasiloxane (CAS# 556‐67‐2). This clear, tasteless, and odorless fluid is non‐greasy, non‐stinging, and ideal for various applications due to its smooth texture and skin-friendly properties.
View product specs:
Product Equivalent: Dow Corning® 244 Fluid & GE SF1173
| Chemical name | Octamethylcyclotetrasiloxane |
| CAS | 556-67-2 |
| Appearance | Clear, colorless, odorless fluid |
| Specific gravity @25°C | 0.95 |
| Viscosity at 25 at 25°C | 2.5cSt |
| Heat of Vaporization @ 65°C | 40 |
| Surface tension | 17.8 |
| Flash point-closed cup | 57.22°C |
| Freeze point * | 17°C |
| Boiling point @ 760mmHg | 172°C |
| % Volatile | 100% |
| Cyclotetrasiloxane (D4) content | >90% |
Properties:
- Low viscosity PDMS Silicone Oils…viscosities slightly higher than water
- Low pour points (as low as -90°C)
- Wide Service Temperature Range
- Low surface tension fluids (high spreadability)
- Low viscosity change at temperature (low VTC)
- RI Values between 1.3970 to 1.400
- High Dielectric Strength
- Newtonian behavior under shear
- Excellent Lubricity
- California VOC Exempt…replacement for petroleum based solvents that are not VOC Compliant
Applications Include:
- Laboratory Bath Fluids
- Heat Transfer Fluids
- Dielectric Fluids
- Low Viscosity Damping Fluids
- ORC Turbo Generator Fluids
- Low Viscosity Hydraulic Fluids
- Refractive Index Matching Fluids
- RI Matching Fluids for LED and Optics
- Low Dielectric Constant Fluids for Photonics
- VOC Exempt Fluids for Renewable Energies
- Lubricants for Plastic Parts
- Lubricants for Rubber Parts
Packaging Specifications
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D4 Cyclomethicone Fluid : Guide
D4 Cyclo-2244 Cyclomethicone is a volatile polydimethylcyclosiloxane made mainly of octamethylcyclotetrasiloxane (CAS# 556-67-2). It is clear, odorless, tasteless, non-greasy, and non-stinging with excellent spreadability.
Used as a base fluid, carrying agent, and wetting agent, Cyclomethicone is common in personal care products like room sprays, body sprays, antiperspirants, skin creams, hair care products, and more.
Cyclomethicone is VOC-exempt, meeting California VOC regulations and OTC standards. It’s an eco-friendly alternative to petroleum-based solvents, with similar evaporation rates to naptha solvents and odorless mineral spirits. It is compatible with most metals and plastics.
