Introduction
As the global personal care industry shifts toward green and sustainable formulations, and as high-end manufacturing sectors such as EV thermal management and 5G communications demand ever-higher material performance, Tetramethylcyclotetrasiloxane (D4H) is gaining significant attention as a key silicone intermediate. Our model CSGW-H20001 D4H product – high purity (≥99% and ≥99.5% dual grades available) , stable supply, and clear technical specifications – is widely used in the synthesis of silicone oils, silicone rubbers, personal care lubricants, and emollients.
What is Tetramethylcyclotetrasiloxane (D4H)?
Tetramethylcyclotetrasiloxane (D4H) is a cyclic silicone compound with CAS No. 2370-88-9 and a molecular weight of 240.51. It appears as a colorless transparent liquid with a density of 0.99 g/cm³ (20°C), a flash point of 24°C, and a boiling point of 135°C. It is insoluble in water but soluble in most organic solvents. These physical properties make D4H an ideal intermediate for synthesizing a wide range of silicone derivatives.
Our D4H product is available in ≥99% and ≥99.5% two purity grades, with excellent batch-to-batch consistency, meeting the demanding requirements for purity and reactivity in various applications.
Key Technical Specifications
• Product Name: Tetramethylcyclotetrasiloxane / D4H
• Model: CSGW-H20001
• CAS No.: 2370-88-9
• Purity: ≥99% / ≥99.5% (dual grades available)
• Appearance: Colorless transparent liquid
• Density (20°C): 0.99 g/cm³
• Flash Point: 24°C
• Boiling Point: 135°C
• Solubility: Insoluble in water, soluble in most organic solvents
Application Areas: From Personal Care to High-End Industrial Manufacturing
As an intermediate, D4H is widely used in the production of silicone oils, silicone rubbers, modified silicone resins, and more. These materials are further applied in release agents, defoamers, textile auxiliaries, electronic potting compounds, and many other industrial segments.
High-Performance Materials & Emerging Applications
In high-end scenarios such as EV thermal management systems, 5G base station sealing and heat dissipation materials, and aerospace weather-resistant coatings, silicone polymers derived from D4H exhibit excellent thermal stability, electrical insulation, and chemical resistance.
Storage & Safety Guidelines
To maintain product quality, D4H should be stored sealed in a cool, dry, well-ventilated area, away from acids, alkalis, and ignition sources. The product has a shelf life of 12 months from the date of production.
Appropriate personal protective equipment (PPE) is recommended during handling. Avoid inhalation or skin contact. Do not consume. For detailed safety information, refer to the corresponding Material Safety Data Sheet (MSDS) and comply with local regulations.
Reliable Supply to Support Global Customers
Our D4H is available in 25 kg and 200 kg closed-top internally coated metal drums, with stable inventory to flexibly support R&D, pilot trials, and commercial production. We also provide technical documentation, sample support, and logistics coordination to help customers reduce supply chain risk.
