Ningbo Inno Pharmchem Co.,Ltd is a leading manufacturer of fine chemicals, including 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol. This product is a versatile intermediate used in the production of various silicone-based compounds, such as sealants, adhesives, lubricants, and coatings. In this article, we will provide a manufacturer's guide to producing 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol, including its properties, applications, and synthesis methods.

Properties and Applications

4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol, also known as 1,3-bis(3-hydroxypropyl)tetramethyldisiloxane, is a colorless and odorless liquid with a molecular formula of C12H30O3Si4. It has a boiling point of 275-280°C, a flash point of 117°C, and a density of 1.03 g/mL at 25°C. This product is soluble in most organic solvents, such as alcohols, ethers, and hydrocarbons, but insoluble in water.

The main application of 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol is as a crosslinking agent in the production of silicone-based materials. It reacts with various silicones, such as polydimethylsiloxane (PDMS), to form crosslinked networks that have excellent thermal stability, chemical resistance, and mechanical properties. These materials are widely used in the construction, automotive, electronics, and healthcare industries, among others.

Another application of 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol is as a surfactant in the production of emulsions and foams. It can stabilize oil-in-water or water-in-oil emulsions and produce stable foams with low surface tension and high stability. These products are used in various applications, such as personal care, food, and agriculture.

Synthesis Methods

Ningbo Inno Pharmchem Co.,Ltd has developed several synthesis methods for producing 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol, including the following:

Method 1: From 1,3-bis(3-hydroxypropyl)tetramethyldisilane

This method involves the reaction of 1,3-bis(3-hydroxypropyl)tetramethyldisilane with a catalytic amount of potassium tert-butoxide in toluene at 80-100°C for 8-12 hours. The resulting mixture is then cooled, filtered, and concentrated to yield 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol with a yield of 85-90%.

Method 2: From 1,3-bis(hydroxypropyl)tetramethyldisiloxane

This method involves the hydrolysis of 1,3-bis(hydroxypropyl)tetramethyldisiloxane with a catalytic amount of sulfuric acid in water at 70-80°C for 12-16 hours. The resulting mixture is then neutralized with sodium hydroxide and extracted with toluene. The organic layer is then washed, dried, and concentrated to yield 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol with a yield of 80-85%.

Method 3: From 3-[[3-hydroxypropyl(dimethyl)silyl]oxy-dimethylsilyl]propan-1-ol

This method involves the reaction of 3-[[3-hydroxypropyl(dimethyl)silyl]oxy-dimethylsilyl]propan-1-ol with a catalytic amount of potassium tert-butoxide in toluene at 80-100°C for 8-12 hours. The resulting mixture is then cooled, filtered, and concentrated to yield 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol with a yield of 75-80%.

Quality Control and Safety

As a leading manufacturer of fine chemicals, Ningbo Inno Pharmchem Co.,Ltd is committed to providing high-quality products that meet or exceed the industry standards. We have a strict quality control system that covers every stage of the production process, from raw material sourcing to final product testing. We use advanced analytical techniques, such as GC-MS, NMR, and HPLC, to ensure the purity, identity, and consistency of our products.

We also take safety seriously and comply with all the relevant regulations and guidelines. We have a comprehensive safety program that includes hazard identification, risk assessment, safety training, and emergency response. We also use state-of-the-art equipment and facilities that are designed to minimize the risks of chemical exposure and accidents.

Conclusion

Ningbo Inno Pharmchem Co.,Ltd is a reliable supplier of 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol, a versatile intermediate used in the production of various silicone-based compounds. We have a proven track record of delivering high-quality products and services to our customers around the world. Our manufacturer's guide to producing 4,4,6,6-tetramethyl-5-oxa-4,6-disila-nonane-1,9-diol provides valuable information on its properties, applications, and synthesis methods. If you are looking for a trusted partner for your fine chemical needs, contact us today and let us help you succeed.

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