heptamethyltrisiloxane factory&supplier
Heptamethyltrisiloxane
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Heptamethyltrisiloxane, also known as 1,1,1,3,5,5,5-heptamethyltrisiloxane, is an important organosilicon intermediate. Its chemical formula is C₇H₂₂O₂Si₃ with a molecular weight of 222.51. It appears as a colorless transparent liquid, with a density of 0.819 g/mL (25°C) and a boiling point of 163.8°C (760 mmHg).
The preparation processes of heptamethyltrisiloxane include: synthesis via cracking reaction using high-hydrogen silicone oil and hexamethyldisiloxane as raw materials and concentrated sulfuric acid as catalyst; hydrolytic synthesis with trimethylchlorosilane and methylhydrogendichlorosilane as raw materials, etc. These processes suffer from drawbacks such as complicated separation and purification, large wastewater output and high production costs.
In 2024, a Chinese company obtained a patent titled Synthesis Process of 1,1,1,3,5,5,5-Heptamethyltrisiloxane. This invention adopts hexamethyldisilazane, water and organic amine as main raw materials to synthesize heptamethyltrisiloxane, featuring simple process and high yield. In 2025, another company was granted a patent named A Preparation Process for Heptamethyltrisiloxane. In this method, high-hydrogen silicone oil is used as raw material, and telomerization reaction is carried out in the presence of an end-capping agent and a catalyst (active components supported on porous carbon material carrier) to produce heptamethyltrisiloxane. This invention boasts low difficulty in product purification and high product purity.
The molecule of heptamethyltrisiloxane contains reactive Si-H bonds, making it the basic raw material for synthesizing polyether-modified trisiloxane. Polyether-modified trisiloxane is a surfactant with a special structure, possessing properties such as dispersibility and wettability. It can be applied in the production of waterborne coatings, adhesives, pesticides and other products.
Driven by continuous research advances and optimized production processes, the market share of high-quality heptamethyltrisiloxane in China will increase further. With the sustained development of downstream industries including coatings and pesticides, the market demand for heptamethyltrisiloxane in China will be unleashed accordingly.
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Heptamethyltrisiloxane is emerging as a transformative functional material in the pharmaceutical industry. This volatile silicone derivative combines low viscosity with high permeability, offering unique solutions for advanced drug delivery systems and medical device technologies. Certified USP Class VI and compliant with ISO 10993-5 standards, heptamet.
Heptamethyltrisiloxane is transforming the personal care industry through its unique volatile characteristics and exceptional spreading properties. This lightweight silicone fluid delivers instant sensory enhancement while providing functional benefits across various product categories. Heptamethyltrisiloxane meets rigorous safety standards including RE.
Heptamethyltrisiloxane is emerging as a powerful adjuvant in modern agriculture, leveraging its unique properties to enhance crop protection product performance. This organosilicone compound acts as a super-spreader, dramatically improving the efficacy of pesticides, herbicides, and fungicides through superior surface coverage and penetration. The mater.
Heptamethyltrisiloxane is gaining recognition as a versatile performance additive in various industrial sectors due to its unique combination of low viscosity, high volatility, and exceptional surface activity. This organosilicone compound serves as an efficient process aid and functional modifier across multiple applications. Heptamethyltrisiloxane off.
