BY-602–Heptamethyltrisiloxane - heptamethyltrisiloxane factory&supplier

Basic Product Information

• Product Name: Heptamethyltrisiloxane
• Appearance: Colorless Transparent Liquid

TYPICAL PROPERTIES

Physical Properties

• Appearance and State: Typically a colorless, transparent liquid with low viscosity and high volatility.
• Odor: May have a slight ether-like or organic solvent odor, depending on purity.
• Boiling and Melting Points: Low boiling point (usually in the range of 150–200°C) and low melting point (possibly below 0°C).
• Density: Lower than water (approximately 0.8–0.9 g/cm³), characteristic of organosilicon compounds.
• Solubility: Soluble in most organic solvents (e.g., toluene, acetone, ethanol) but insoluble in water.
• Volatility: Highly volatile; requires airtight storage.

Chemical Properties

• Stability: Relatively stable under heat and chemical reagents but may decompose under strong acids, strong bases, or high temperatures.
• Reactivity:
• Hydrolysis: Siloxane bonds (Si-O-Si) may hydrolyze under acidic or alkaline conditions, forming silanols (Si-OH).
• Reaction with Active Metals: May react with metals such as lithium or magnesium to form metal-silicon compounds.
• Oxidation: May oxidize under high temperatures or strong oxidizing agents, producing silica (SiO₂) and other byproducts.
• Functional Group Characteristics: Contains methyl groups (-CH₃) and siloxane bonds (Si-O-Si), with the latter providing flexibility and thermal stability.
• Flammability: Flammable; combustion may release carbon dioxide, carbon monoxide, and silica.
• Reactions with Other Reagents: May react with Grignard reagents or organolithium compounds, undergoing silicon-carbon bond substitution.

Product Functions

• Hydrophobic Modification: Imparts water-repellent properties, reduces surface energy, and enhances material waterproofing.
• Surface Activity Adjustment: Acts as a surfactant or additive to regulate liquid surface tension, improving wettability or spreading ability.
• Chemical Intermediate: Serves as a key intermediate in organosilicon synthesis for constructing complex siloxane structures.
• Thermal Stability Enhancement: Siloxane bonds (Si-O-Si) provide excellent thermal stability, suitable for material modification in high-temperature environments.
• Rheological Property Adjustment: Modifies viscosity and flow behavior of liquid or colloidal systems, enhancing processability.
• Adhesion Promotion: Functions as a coupling agent or additive to improve bonding performance between dissimilar materials.
• Oxidation Resistance: Under specific conditions, slows oxidative degradation of materials, extending service life.
• Volatile Carrier Function: Acts as a volatile solvent or carrier to ensure uniform dispersion or rapid evaporation of other components.
• Chemical Reaction Control: Participates in reactions such as hydrosilylation and hydrolysis-condensation, influencing the structure and properties of final products.
• Inert Protection: Provides inert shielding during chemical reactions or storage to minimize side reactions.

Application

• Organosilicon Materials Industry
• Silicone Oil Synthesis: Used as short-chain siloxane monomers to prepare methyl silicone oil, phenyl silicone oil, and similar products.
• Silicone Resin Modification: Functions as a crosslinking agent or end-capping agent to adjust the flexibility and temperature resistance of silicone resins.
• Silicone Rubber Additives: Improves processing fluidity or surface properties of silicone rubber.
• Surface Treatment & Functional Coatings
• Waterproof Coatings: Applied for hydrophobic treatment on glass, ceramic, or metal surfaces (e.g., construction waterproofing, automotive rain-repellent glass coatings).
• Anti-Fouling Coatings: Used in marine anti-fouling paints or kitchenware anti-grease coatings.
• Optical Coatings: Reduces reflection and fingerprint adhesion on lenses or display screens.
• Personal Care & Cosmetics
• Skincare Products: Serves as volatile silicone oil in sunscreens or foundations to deliver a lightweight, non-greasy texture.
• Haircare Products: Enhances hair softness and shine in shampoos or conditioners.
• Makeup Fixation: Helps mascara, eyeliners, etc., achieve long-lasting hold and easy removal.
• Electronics & Semiconductor Industry
• Electronic Encapsulation: Acts as a modifier for encapsulation materials to improve high-temperature resistance and insulation.
• Semiconductor Coatings: Used for temporary protective layers on wafers or as components in photoresists.
• Thermal Interface Materials: Enhances wettability and thermal stability of thermal greases/pads.
• Industrial Manufacturing & Processing
• Release Agents: Applied in tire or plastic molding to reduce adhesion during demolding.
• Lubricant Additives: Lowers friction coefficients in high-temperature lubricants (e.g., bearings, gears).
• Foam Control: Suppresses foam formation in petroleum extraction or wastewater treatment.
• Pharmaceuticals & Biomaterials
• Drug Carriers: Utilized as components in hydrophobic drug delivery systems (e.g., anticancer agents).
• Medical Silicones: Improves biocompatibility and flexibility of catheters or implants.
• Medical Device Coatings: Provides anti-adhesive or antimicrobial coatings for surgical instruments.
• Specialty Chemicals & Research
• Coupling Agent Precursors: Synthesizes silane coupling agents (e.g., for glass-fiber-reinforced plastics).
• Nanomaterial Modification: Modifies silica nanoparticles to enhance dispersibility.
• Reaction Intermediates: Builds complex siloxane structures in organic synthesis.
• New Energy & Environmental Technologies
• Lithium Battery Materials: Serves as electrolyte additives to enhance high-temperature stability.
• Photovoltaic Components: Applied in anti-dust or hydrophobic coatings for solar panels.
• Eco-Friendly Coatings: Develops low-VOC (volatile organic compounds) green coating systems.

Core Advantages

Experimental Data & Case Studies

Pesticide Industry

• Experimental Data: Reduces water surface tension to below 21 mN/m, cutting pesticide consumption by 30–50%.
• Case Study: In trials against citrus red mites and strawberry aphids, heptamethyltrisiloxane modified with polyether (at a 100:1 dilution ratio) demonstrated efficacy comparable to Silwet 408 organosilicon at the same concentration.

Coatings Industry

• Experimental Data: Lowers coating surface tension from 30–40 mN/m to 20–25 mN/m.
• Case Study: Applied in metal coatings to minimize sagging and orange peel effects; used in architectural coatings to enhance adhesion and water resistance.

Electronics Industry

• Experimental Data: Reduces semiconductor chip surface contact angles from 70°–80° to 30°–40°.
• Case Study: A semiconductor manufacturer adopted it as a release agent for printed circuit boards, achieving smooth demolding and high surface quality.

Textile Industry

• Experimental Data: Post-treatment reduces static friction coefficients to 0.2–0.3 and kinetic friction coefficients to 0.1–0.2.
• Case Study: A textile mill used it in premium shirt fabrics, producing soft, water-repellent materials with reduced static buildup.

Cosmetics Industry

• Experimental Data: Lowers emulsion viscosity by 10–20% and improves skin luminosity by 15–25% when added to lotions.
• Case Study: A cosmetics brand incorporated it into conditioners, earning consumer praise for silky, glossy hair results.

Usage Guidelines & Precautions

Usage Guidelines

• Pesticide Industry

Application: Add as an adjuvant, comprising 0.1–0.5% of total pesticide mass.

Procedure:

Weigh pesticide first.

Add adjuvant.

Mix with water and stir thoroughly.

Example: Add 1–5 mL of adjuvant per 1000 mL pesticide solution.

• Coatings Industry

Application: Incorporate during grinding or paint formulation, at 0.2–2% of total coating mass (adjust based on system requirements).

Example: Add 0.2–2 kg adjuvant per 100 kg latex paint to improve leveling and gloss.

• Electronics Industry

Application: Use as a surface treatment agent via spraying, dipping, or brushing.

Example: For PCB demolding, prepare a 1–5% solution, dip the board for seconds, then air-dry.

• Textile Industry

Methods:

Pad-Dry Method: Immerse fabric in a finishing bath containing 0.5–3% adjuvant, pad, then dry.

Coating Method: Apply finishing agent to fabric surface and dry.

Example: Use 1–2% concentration for cotton fabric treatment.

• Cosmetics Industry

Application: Add during emulsion preparation at 0.5–3% of total formulation.

Example: Incorporate 0.5–3 kg adjuvant per 100 kg lotion/cream during emulsification.

Precautions

• Storage:

Store in a cool, ventilated area (<30°C), away from ignition sources and heat.

Keep containers sealed to prevent moisture absorption and thermal degradation.

• Safety:

Flammable – Keep away from open flames, heat, and strong oxidizing agents.

Ensure adequate ventilation in work areas to avoid vapor accumulation.

Wear PPE (gloves, goggles); rinse immediately with water if contacted and seek medical help.

• Compatibility:

Test compatibility before mixing with other chemicals.

Avoid reactions with strong acids/bases in pesticides or coatings.

• Dosage Control:

Strictly follow recommended dosages.

Overuse may cause phytotoxicity (pesticides) or compromise stability/safety (cosmetics).

Packaging & Ordering

Packaging: 200kg/1000kg plastic drums (customizable).