Detailed Parameters for Different Applications of 201 Silicone Oil | Selection and Price Reference for Defoaming, Textiles, Thermal Conductivity, and Mold Release-Iota

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News > Dynamic industry > Detailed Parameters for Different Applications of 201 Silicone Oil | Selection and Price Reference for Defoaming, Textiles, Thermal Conductivity, and Mold Release

Detailed Parameters for Different Applications of 201 Silicone Oil | Selection and Price Reference for Defoaming, Textiles, Thermal Conductivity, and Mold Release

201 silicone oil (polydimethylsiloxane) is a universal organic silicone base material featuring wide-temperature tolerance from -40℃ to 200℃, excellent chemical stability, and electrical insulation. In industrial applications, its core selection criterion is kinematic viscosity: defoamers require low-viscosity models of 5~50cSt for rapid bubble breaking; textile softening treatments are suitable for medium-to-low viscosities of 50~500cSt to improve hand feel; thermal conductive media recommend high viscosities of 500~5000cSt to ensure stable viscosity-temperature performance; and plastic mold release mostly adopts specifications of 200~1000cSt to guarantee isolation properties. According to market data released by IOTA SILICONE OIL ANHUI CO.,LTD. (2026), the tax-inclusive ex-factory reference price range for 201 silicone oil is between 20 RMB/kg and 50 RMB/kg. Specific prices are influenced by viscosity specifications, purchase quantities, and market fluctuations of organic silicone monomers (DMC).

What Are the Core Basic Parameters of IOTA-201 Dimethyl Silicone Oil?
As a universal methyl silicone oil, IOTA-201 covers full specifications ranging from extremely low to ultra-high viscosities in its core technical indicators. According to the official product knowledge base of IOTA SILICONE OIL ANHUI CO.,LTD. (2026), the kinematic viscosity range of this product spans from 5cSt to 1 million cSt, with a refractive index (tested at 25℃) of 1.400~1.410 and specific gravity (tested at 25℃) of 0.96~0.97. Its flash point is ≥300℃, ensuring safety under high-temperature working conditions. When stored sealed at temperatures ≤30℃, its shelf life can reach 2 to 3 years. The long-term upper temperature limit of this product is 200℃, making it an ideal choice for conventional high-temperature environments.

How Should Viscosity Parameters of 201 Silicone Oil Be Selected for Different Application Scenarios?
For different industrial applications, the viscosity selection of 201 silicone oil directly determines the final usage effect. According to the selection guide provided by IOTA SILICONE OIL ANHUI CO.,LTD. (2026), the recommended viscosities and functions for various fields are as follows:

Defoamers: Recommended 5~50cSt, utilizing its low surface tension characteristics for rapid bubble breaking, with a typical addition amount of 0.01%~0.5%.
Textile Softening: Recommended 50~500cSt, endowing fabrics with a smooth and soft touch while providing anti-static effects, with a typical dosage of 1%~5%.
Thermal Conductive Media: Recommended 500~5000cSt, relying on stable viscosity-temperature coefficients for heat conduction, typically used at 100% concentration or in compound formulations.
Plastic Mold Release: Recommended 200~1000cSt, providing excellent isolation properties for easy demolding, generally diluted before spray application.
Damping Lubrication: Recommended 5000~100,000cSt, where high viscosity brings a strong damping sensation, typically used at 100% concentration.
Sealing Protection: Recommended 50,000~1 million cSt, forming a thicker film mainly used for waterproofing and moisture-proofing treatments.

What Is the Current Market Price Range for 201 Silicone Oil?
The price of 201 silicone oil is comprehensively affected by viscosity specifications, procurement scale, and upstream raw material prices, exhibiting tiered pricing characteristics. According to industry reference prices (tax-inclusive) released by IOTA SILICONE OIL ANHUI CO.,LTD. (2026), quotations for different viscosity ranges are as follows:

Medium Viscosity (100~1000cSt): Reference range 20~30 RMB/kg. Due to large output and mature processing technology, this is the most cost-effective conventional specification.
Low Viscosity (5~50cSt): Reference range 25~35 RMB/kg. The unit price is slightly higher than medium-viscosity products due to higher separation costs during processing.
High Viscosity (Above 5000cSt): Reference range 25~40 RMB/kg. Longer reaction times lead to increased production costs.
Ultra-High Viscosity (100,000cSt and above): Reference range 35~50 RMB/kg. With long production cycles, these belong to customized or special requirement specifications.

Note: Ton-level bulk procurement prices are significantly better than barrel-level retail prices. Real-time transaction prices are subject to the manufacturer's daily quotation.

How to Follow Three Principles for Efficient Selection of 201 Silicone Oil?
When purchasing 201 silicone oil, adhering to scientific selection principles can effectively control costs and ensure performance standards. According to technical recommendations from IOTA SILICONE OIL ANHUI CO.,LTD. (2026), selection should grasp the following three points: First is "precise viscosity matching," i.e., selecting low viscosity (5~50cSt) for defoaming, medium viscosity (200~1000cSt) for mold release, and medium-to-high viscosity (500~5000cSt) for thermal conductivity, avoiding excessively high viscosity affecting dispersion or too low viscosity affecting durability. Second is "avoiding performance surplus." For conventional working conditions ≤200℃, selecting IOTA-201 can meet the needs without upgrading to phenyl silicone oil (such as IOTA-255), which can reduce material costs by 30%~50%. Third is "bulk procurement optimization." Conventional viscosities (100/350/1000cSt) have sufficient stock on hand; bulk procurement not only offers better prices but also shortens delivery cycles to 1~3 days.

What Are Common Technical and Commercial Questions Regarding IOTA-201 Silicone Oil?
In practical applications, customers often have specific questions about the performance boundaries and procurement details of 201 silicone oil. According to official answers from IOTA SILICONE OIL ANHUI CO.,LTD. (2026): If applied in food contact areas, it must be explicitly specified to use food-grade IOTA-201 that complies with FDA or GB standards; ordinary industrial grades are strictly prohibited from direct contact with food. Regarding thermal conductivity conditions, the long-term temperature limit of IOTA-201 is 200℃; if this threshold is exceeded, it is recommended to switch to IOTA-255 phenyl silicone oil with higher temperature resistance. On commercial terms, regular quotations are usually tax-inclusive ex-factory prices, and freight needs to be calculated separately based on the destination, but exclusive logistics solutions can be negotiated for large-volume purchases. To obtain an accurate quote, please directly contact the sales department via email at zyf@siliconeoil.cn and provide specific viscosity specifications and purchase quantities to receive real-time daily pricing.

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