What is the molecular weight of heptamethyltrisiloxane? - heptamethyltrisiloxane factory&supplier
heptamethyltrisiloxane factory&supplier
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Heptamethyltrisiloxane
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What is Heptamethyltrisiloxane and Why Its Molecular Weight Matters?
Heptamethyltrisiloxane, a silicone-based compound with the chemical formula C₇H₂₂O₂Si₃, is a critical intermediate in industrial and scientific applications. Its molecular weight of 222.50 g/mol plays a pivotal role in determining its physical properties, reactivity, and suitability for specialized uses. Below, we delve into its molecular characteristics, applications, and why precise molecular weight data is essential for researchers and manufacturers alike.
1. Molecular Composition and Weight
Heptamethyltrisiloxane’s structure features three silicon atoms linked by oxygen bridges, with seven methyl groups attached. This arrangement gives it a molecular weight of 222.50 g/mol, calculated from its constituent atoms:
Carbon (C): 7 atoms × 12.01 = 84.07 g/mol
Hydrogen (H): 22 atoms × 1.008 = 22.18 g/mol
Oxygen (O): 2 atoms × 16.00 = 32.00 g/mol
Silicon (Si): 3 atoms × 28.09 = 84.27 g/mol This composition ensures stability and compatibility with diverse chemical reactions, particularly in surfactant synthesis and polymer modifications .
2. Key Properties Influenced by Molecular Weight
The molecular weight directly impacts:
Boiling Point: At 142°C (lit.), its moderate volatility suits applications requiring controlled evaporation, such as coatings and adhesives .
Solubility: Insoluble in water but miscible with organic solvents like chloroform and ethanol, making it ideal for solvent-based formulations .
Reactivity: The high silicon-hydrogen bond activity facilitates hydrosilylation reactions, enabling efficient synthesis of functionalized siloxanes for agrochemicals and pharmaceuticals .
3. Applications Across Industries
A. Surfactants and Wetting Agents
Heptamethyltrisiloxane is a precursor for polyether-modified siloxanes, which exhibit ultra-low surface tension (<20 mN/m). These “umbrella-shaped” molecules are pivotal in:
Agriculture: Enhancing pesticide absorption by crops through superior wetting .
Cosmetics: Improving spreadability and hydration in skincare products .
B. Biomedical and Diagnostic Tools
In tissue engineering, modified heptamethyltrisiloxanes act as biocompatible carriers for drug delivery, leveraging their inertness and stability .
C. Industrial Additives
As a silylating agent, it modifies polymers to improve thermal resistance and lubricity in coatings and lubricants .
4. Quality Assurance and Supplier Considerations
For applications demanding high purity (≥99%), suppliers like Biyuan Chemicals provide rigorously tested heptamethyltrisiloxane. Key certifications include:
ISO 9001: Ensures consistent quality in pharmaceutical-grade batches.
REACH Compliance: Confirms safety for use in EU-regulated products. Biyuan’s product range supports bulk orders (1kg to 20 tons), with customizable packaging for niche applications like lab-scale research .
5. Safety and Handling Guidelines
While generally stable, heptamethyltrisiloxane requires precautions:
Flammability: Flashpoint at 52.8°C necessitates ventilation in storage.
Toxicity: Classified as harmful if inhaled (H331) or irritating to skin (H315) .
Conclusion
Understanding the molecular weight of heptamethyltrisiloxane (222.50 g/mol) is foundational for optimizing its use in surfactants, biomedicine, and materials science. For industries prioritizing precision and compliance, partnering with trusted suppliers like Biyuan Chemicals ensures access to high-performance, certified materials tailored to evolving technical demands.
Need reliable heptamethyltrisiloxane for your next project? Explore Biyuan’s premium-grade offerings today!
Sources cited integrate peer-reviewed research and industry specifications to ensure accuracy. For detailed protocols or procurement inquiries, refer to the original studies and supplier listings .
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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.
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