Hydrogen-Terminated Silicone Oil For Defoaming Industrial Processes

Silicone Oil Product Series for Defoaming

Core Products for Industrial Foam Control

BY-209 Amino-modified Silicone Fluid for Defoaming

Methyl Hydrogen Silicone Fluid MH Fluid for industrial defoaming

Methyl Hydrogen Silicone Fluid (MH Fluid) for Defoaming

Hydrogen-Terminated Silicone Oil for Defoaming

Vinyl Silicone Oil CAS 70900-21-0 for Defoaming

What Is Hydrogen-Terminated Silicone Oil?

Chemistry Behind Superior Foam Control

Hydrogen-terminated silicone oil — also referred to as Si-H terminated polydimethylsiloxane — is a specialty functional silicone fluid where both ends of the polymer chain are capped with reactive Si-H (silicon-hydrogen) groups. This unique terminal structure distinguishes it from conventional dimethyl silicone oils and unlocks a broad range of reactive and surface-active properties that make it exceptionally effective as a defoaming agent in industrial processes.

The backbone of hydrogen-terminated silicone oil is the classic polydimethylsiloxane (PDMS) chain, renowned for its low surface tension, thermal stability, chemical inertness, and hydrophobicity. By introducing Si-H groups at both chain termini, the molecule gains the ability to participate in hydrosilylation reactions, crosslink with vinyl-functional compounds, and anchor to surfaces — all while retaining the inherent foam-suppressing characteristics of silicone chemistry.

⚗️ The reactive Si-H terminal groups enable hydrogen-terminated silicone oil to function not only as a standalone defoamer but also as a key building block in formulating advanced antifoam compounds, crosslinked silicone networks, and surface-modified materials — making it one of the most versatile silicone intermediates in modern industrial chemistry.

In defoaming applications, the mechanism relies on the oil's ability to spread rapidly across foam lamellae, destabilize the thin liquid films that sustain bubbles, and cause them to rupture. The low surface energy of the silicone backbone drives spontaneous spreading, while the Si-H groups can be leveraged to tune hydrophobicity, compatibility with aqueous or non-aqueous systems, and reactivity with other formulation components. The result is a defoamer that acts quickly, persists over time, and can be tailored to the specific chemistry of virtually any industrial process stream.

Molecular weight and viscosity are key parameters that determine performance. Lower molecular weight grades (typically 300–1000 cSt) offer faster spreading and are preferred in aqueous systems such as fermentation broths, paper pulp slurries, and wastewater treatment. Higher viscosity grades provide longer-lasting foam suppression in high-temperature or high-shear environments such as polymer reactors, lubricant manufacturing, and metalworking fluids. Bayee Chemical supplies hydrogen-terminated silicone oil across a range of viscosity grades to match the precise requirements of each application.

Key Properties Driving Defoaming Performance

Why Industry Chooses Hydrogen-Terminated Silicone Oil

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Ultra-Low Surface Tension

Surface tension values as low as 20–22 mN/m allow rapid spreading across foam films, instantly destabilizing bubble walls and collapsing foam structures in both aqueous and non-aqueous systems.

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Exceptional Thermal Stability

The Si-O-Si backbone remains stable from -50°C to over 200°C, ensuring consistent defoaming performance in high-temperature industrial processes including distillation, polymerization, and hot-melt operations.

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Reactive Si-H Terminals

Terminal Si-H groups enable hydrosilylation crosslinking, surface grafting, and co-formulation with vinyl silicones — allowing formulators to engineer defoamers with precisely tuned activity and persistence.

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Chemical Inertness

Resistant to acids, alkalis, oxidizingagents, and most organic solvents, hydrogen-terminated silicone oil maintains defoaming efficacy across a wide pH range (2–13), making it suitable for aggressive chemical processing environments.

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Tunable Viscosity Grades

Available from 50 cSt to 10,000+ cSt, viscosity can be matched to process conditions — lower grades for fast-spreading aqueous defoaming, higher grades for sustained suppression in viscous polymer or lubricant systems.

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Low Toxicity & Regulatory Compliance

Meets REACH, RoHS, and major food-contact regulations when properly formulated. Non-irritating, non-flammable, and biodegradation-friendly profiles support use in food processing, pharmaceutical, and environmentally sensitive applications.

Deep-Dive: Industrial Defoaming Application Scenarios

Where Hydrogen-Terminated Silicone Oil Delivers Maximum Value

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Textile & Dyeing Processes

In textile wet processing — including scouring, dyeing, printing, and finishing — excessive foam disrupts dye penetration, causes uneven coloration, and reduces throughput. Hydrogen-terminated silicone oil, often formulated with hydrophobic silica, provides rapid knockdown and persistent antifoam activity even under high-temperature, high-agitation conditions. Its low surface energy ensures compatibility with anionic and non-ionic surfactant-rich dye baths without interfering with fiber-dye affinity.

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Chemical & Polymer Manufacturing

Polymerization reactors, resin synthesis vessels, and chemical distillation columns are highly prone to foam generation due to surfactant by-products, agitation, and gas evolution. Hydrogen-terminated silicone oil is introduced directly or as part of a compound defoamer to prevent foam overflow, protect vacuum systems, and maintain reaction efficiency. Its reactivity with vinyl-functional monomers also allows it to be incorporated into the polymer matrix without leaving extractable residues.

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Wastewater & Effluent Treatment

Biological aeration tanks, dissolved air flotation (DAF) units, and anaerobic digesters in municipal and industrial wastewater plants generate persistent foam from surfactants, proteins, and microbial metabolites. Hydrogen-terminated silicone oil defoamers — diluted in water-based emulsions — are dosed continuously or on-demand to collapse surface foam, prevent overflow events, and protect blower equipment. Low effective dose rates (5–50 ppm) minimize operating costs and environmental load.

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Fermentation & Bioprocessing

Aerobic fermentation for antibiotics, enzymes, amino acids, and biofuels relies on vigorous aeration that inevitably generates foam. Foam entrainment in exhaust gas lines causes product loss and contamination risk. Hydrogen-terminated silicone oil — approved for use in food-grade and pharmaceutical fermentation when properly certified — suppresses foam at the broth surface without inhibiting microbial activity, preserving yield and batch integrity across multi-day fermentation cycles.

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Pulp & Paper Industry

The pulping, bleaching, and coating stages of paper manufacturing involve aggressive chemical environments and high-speed mechanical agitation that generate foam at every stage. Hydrogen-terminated silicone oil defoamers are applied to black liquor evaporators, paper machine wet-end circuits, and coating color preparation tanks. Their compatibility with cellulosic fiber systems and resistance to the alkaline conditions of kraft pulping make them the defoamer of choice for modern integrated paper mills.

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Petroleum Refining & Lubricants

Crude oil processing, lubricant blending, and metalworking fluid formulation all encounter foam problems driven by dissolved gases, surfactant additives, and high-shear mixing. Hydrogen-terminated silicone oil is added at ppm levels to transformer oils, hydraulic fluids, gear oils, and cutting fluids to suppress air entrainment, protect pump cavitation, and maintain fluid film integrity. Its non-polar character ensures complete compatibility with hydrocarbon base stocks.

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Food & Beverage Processing

Sugar refining, starch processing, edible oil deodorization, and beverage carbonation all require food-safe defoaming solutions. Food-grade hydrogen-terminated silicone oil emulsions — compliant with FDA 21 CFR and EU food contact regulations — prevent foam overflow in evaporators and mixing tanks without leaving detectable residues in the final product. The chemically inert nature of the silicone backbone ensures no flavor or odor transfer to sensitive food matrices.

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Construction Materials & Coatings

Water-based paints, architectural coatings, adhesives, and cementitious grouts trap air during high-speed dispersion and application, leading to surface defects, pinholes, and reduced mechanical strength. Hydrogen-terminated silicone oil, incorporated at 0.1–0.5% loading, eliminates micro-foam and macro-foam during production and application. Its compatibility with acrylic, polyurethane, and epoxy resin systems — and its non-yellowing character — make it the preferred defoamer for premium coating formulations.

Market Status & Development Trends

The Global Silicone Defoamer Industry Outlook

$8.2B

Global Defoamer Market 2024

6.4%

CAGR Through 2030

42%

Silicone-Based Market Share

60+

Countries Served by Bayee

The global industrial defoamer market has entered a phase of accelerated growth, driven by expanding manufacturing output across Asia-Pacific, tightening environmental regulations in Europe and North America, and the rapid scale-up of bioprocessing and renewable energy industries. Silicone-based defoamers — led by hydrogen-terminated and methyl hydrogen silicone oil formulations — continue to gain market share over mineral oil and polyether alternatives due to their superior performance at lower dose rates, broader operating temperature windows, and longer service life.

China has emerged as both the world's largest producer and consumer of functional silicone intermediates, with Zhejiang, Jiangsu, and Shandong provinces hosting the most competitive manufacturing clusters. Bayee Chemical's strategic network of factory partners across these regions positions it at the center of this supply chain, enabling consistent quality, competitive pricing, and reliable availability for global buyers.

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Green & Bio-Based Formulations

Regulatory pressure and ESG commitments are driving demand for lower-VOC, biodegradation-compatible defoamer systems. Hydrogen-terminated silicone oil's inherently low toxicity and compatibility with bio-based carrier fluids position it as a key component in next-generation green defoamer formulations.

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AI-Driven Process Optimization

Smart manufacturing platforms are integrating real-time foam sensors with automated dosing systems. Hydrogen-terminated silicone oil's fast knockdown kinetics and predictable dose-response characteristics make it the ideal active ingredient for precision, sensor-triggered antifoam injection systems in Industry 4.0 environments.

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Nano-Composite Defoamer Systems

Combining hydrogen-terminated silicone oil with nano-scale hydrophobic silica, modified clay, or graphene oxide particles creates synergistic defoamer compounds with dramatically enhanced performance at ultra-low loading levels — a critical advantage in cost-sensitive, high-volume applications like paper and wastewater treatment.

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Energy Transition Applications

The rapid expansion of biogas, bioethanol, and hydrogen production facilities creates massive new demand for high-performance defoamers. Fermentation-based renewable fuel processes operate under conditions ideally suited to hydrogen-terminated silicone oil — high temperature, high aeration, and complex microbial broth chemistry.

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Pharmaceutical & Biotech Growth

The global biologics boom — mAbs, vaccines, cell therapies — demands ultra-pure, certified defoaming solutions for bioreactors and downstream processing. Pharmaceutical-grade hydrogen-terminated silicone oil meeting USP, EP, and GMP standards is among the fastest-growing segments of the specialty silicone market.

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Asia-Pacific Market Expansion

Southeast Asia's booming textile, food processing, and chemical manufacturing sectors are driving double-digit annual growth in silicone defoamer demand. Bayee Chemical's established export infrastructure and competitive China-sourced pricing provide decisive advantages for regional distributors and end-users seeking reliable supply partnerships.

Commercial Advantages of Choosing Bayee's Hydrogen-Terminated Silicone Oil

Trusted Supply Partner for Global Industrial Buyers

For procurement managers and formulation chemists evaluating hydrogen-terminated silicone oil suppliers, Bayee Chemical offers a combination of technical depth, supply chain reliability, and commercial flexibility that is difficult to match in the global market. With over 25 years of chemical export experience and a vertically integrated network of certified manufacturing partners across nine Chinese provinces, Bayee delivers consistent product quality backed by ISO 9001:2015 certification and AAA Credit Rating — the highest commercial trust designation in China's export sector.

🏆 Bayee Chemical holds ISO 9001:2015 certification, AAA Credit Rating (BRC24AAA10012R2S), Dangerous Cargo Certificate No. [2025] 06002608, and Import & Export Certificate No. 02306457 — providing buyers with full regulatory assurance and supply chain transparency for hydrogen-terminated silicone oil and related functional silicone products.

Competitive Cost Structure

By working directly with production facilities located in professional chemical industrial parks — where raw material supply, energy (gas and steam), and logistics infrastructure are co-located — Bayee achieves unit production costs that consistently undercut traditional trading company pricing. Raw material procurement is actively managed to capitalize on market timing, with strategic inventory positions built during favorable price windows to protect customer cost structures against volatility.

Technical Support & Custom Formulation

Beyond standard product grades, Bayee's technical team collaborates with customers to develop customized hydrogen-terminated silicone oil specifications — adjusted viscosity, hydrogen content, purity grade, and packaging format — to match specific defoamer formulation requirements. This application engineering capability is especially valued by specialty chemical formulators developing proprietary antifoam compounds for niche industrial markets.

Quality Assurance & Documentation

Every shipment of hydrogen-terminated silicone oil is supported by full documentation including Certificate of Analysis (CoA), Safety Data Sheet (SDS), packing list, and where required, third-party test reports from accredited Chinese chemical institutes. Bayee's close relationships with national-level testing organizations ensure rapid turnaround on custom testing protocols, including Si-H content titration, viscosity verification, refractive index, and purity by GC analysis.

Global Logistics & Compliance

With direct Dangerous Cargo Permission Certificate and extensive experience shipping functional silicones to Europe, the Americas, Middle East, and Asia-Pacific, Bayee manages the full export compliance chain — UN classification, IMDG packaging, customs documentation, and destination country regulatory requirements — reducing buyer administrative burden and minimizing shipment delays.

About Bayee

Company Profile

Welcome to Bayee

Hangzhou Bayee Chemical Co., Ltd. started chemical products exporting from 2001, manufacturers based exporter focused in chemical products covering Silicone series, Phosphorus series including Silicone Monomers, Cyclosiloxane, Silicone Oils, Agro Chemicals, Fire Retardants & Auxiliaries etc. Company has direct Import & Export right, Dangerous Cargo Permission Certificate. Based on 20+ years exporting history and persistent improvements, we have now grown and developed into a well known & good reputation exporter with ISO 9001:2015, AAA Credit certified company, also granted by local government as Healthy Enterprise, and A level Tax Ranking.

Based on strategic factories in Zhejiang, Jiangsu, Shandong, Anhui, Jiangxi, Hubei, Hunan, Hebei and Henan provinces etc, we export not only good quality products, competitive EXW costs, but also honesty, safety and international philosophies to customers. We work tightly with competitive production sites across whole China, who have special advantages, located in professional industrial areas, close to raw material bases, locally supplied with energy - gas or steam pipe connected with neighbour enterprises in same areas to reduce transportation costs.

Company Details:
Business Licence No. / Social Credit Code: 91330108759549090L
Dangerous Cargo Certificate No.: [2025] 06002608
Import & Export Certificate No.: 02306457
AAA Credit Rating No.: BRC24AAA10012R2S
ISO:9001 Certificate: BRC2024Q10513R2S

About Bayee Chemical - Hydrogen-Terminated Silicone Oil Manufacturer

25⁺Years R&D & Production Experience

Our Facilities & Operations

State-of-the-Art Manufacturing Infrastructure

Bayee Chemical facility 1 - silicone oil production

Bayee Chemical facility 2 - hydrogen terminated silicone oil

Bayee Chemical facility 3 - industrial defoaming solutions

Bayee Chemical facility 4 - chemical export operations

BUSINESS

Global Market Reach

Up till now we've developed and supplied to many countries and areas all over the world, with main markets in European countries (Germany, Italy, UK, Spain, Ukraine, Russia, Poland, etc.), USA, South America, Mid East, South-east Asia, Australia, etc. Also seeking more strategic partners and customers under mutual benefits and work through the whole purchasing chain.

🇩🇪 Germany 🇮🇹 Italy 🇬🇧 UK 🇪🇸 Spain 🇺🇦 Ukraine 🇷🇺 Russia 🇵🇱 Poland 🇺🇸 USA 🌎 South America 🌍 Mid East 🌏 South-East Asia 🇦🇺 Australia

Complete Silicone Oil Product Range for Defoaming

Full Portfolio of Industrial Defoaming Silicone Solutions

BY-209 Amino-modified Silicone Fluid for Defoaming

Methyl Hydrogen Silicone Fluid (MH Fluid) for Defoaming

Hydrogen-Terminated Silicone Oil for Defoaming

Vinyl Silicone Oil CAS 70900-21-0 for Defoaming

OH-Hydroxy Terminated Silicone Fluid for Defoaming

Amino-Modified Silicone Fluid Defoaming Solution

MH Fluid methyl hydrogen silicone industrial defoamer

MH Fluid Industrial Defoamer for Process Industries

Hydrogen-Terminated Silicone Oil Compound Defoamer