Dimethyl Silicone Oil (PDMS)
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Dimethyl Silicone Oil

Chemical Name: Polydimethylsiloxane

CAS No. 63148-62-9 / 9006-65-9

Dimethyl Silicone Oil, whose full name is Polydimethylsiloxane (PDMS), features a stable backbone consisting of siloxane bonds (Si-O), with methyl (-CH₃) groups covalently bonded to silicon atoms on its side chains. This unique "silicon-oxygen-methyl" molecular structure endows it with excellent properties including low surface tension, high chemical stability and broad temperature adaptability, cementing its status as a core product in the field of silicone materials.

Applications

Dimethyl silicone oil is a colorless, odorless and non-toxic silicone material with physiological inertness and excellent weather resistance. It features adjustable viscosity from  5 to 600,000 cSt  low freezing point, high flash point, strong hydrophobicity and good shear resistance, and can be used continuously at -50~180℃.

· Industrial field: Used as high-temperature mechanical lubricant, precision equipment sealant and efficient plastic/rubber mold release agent.

· Electronics field: Applied in PCB insulation, electronic component moisture-proof treatment and LED encapsulation.

· Daily chemicals: Added to skin care products for moisturizing, used for leather waterproof/softening and hair care smoothing.

· Medical grade: Medical-grade products serve as gastrointestinal defoamers, medical catheter lubricants and medical device coating auxiliaries.

· Other Applications: FDA-compliant food processing defoamer, industrial heat transfer fluid and coating additive.

Its excellent broad temperature adaptability and stable performance meet the weather resistance and safety requirements of materials across various industries.

 

Technical Data Sheet

Viscosity (25℃) Appearance Volatiles (150℃,3h) Viscosity Tolerance Flash Point
50 mm²/s Colorless Clear Fluid < 1% ± 10% ≥ 280 ℃
100 mm²/s Colorless Clear Fluid < 1% ± 10% ≥ 300 ℃
350 mm²/s Colorless Clear Fluid < 1% ± 10% ≥ 310 ℃
1000 mm²/s Colorless Clear Fluid < 1% ± 10% ≥ 330 ℃
12500 mPa·s Colorless Clear Fluid < 1% ± 10% ≥ 330 ℃
500000 mPa·s Colorless Clear Fluid < 1% ± 10% ≥ 330 ℃

 

Available Options

✓ Low Cyclic Siloxane Content (D3-D10) <300 ppm

✓ Ultra Low Cyclic Siloxane Content (D3-D10) <100 ppm

✓ Low Volatile Content  (150℃,3h) < 0.5%

✓ Ultra Low Volatile Content  (200℃,4h) < 0.25%

✓ Custom Packaging

✓ OEM Label

 

Packaging

Standard Packaging: Available in 200 kg net steel drums or 1,000 kg net IBCs. Custom packaging options are available upon request.

Storage

Store in the original, tightly sealed container in a cool, dry and well-ventilated area. Under recommended storage conditions, the product has a shelf life of 24 months from the date of manufacture. Please refer to the product label for the expiration date.

Transportation

This product is classified as a non-hazardous chemical and may be transported as general cargo. During transportation, protect the product from moisture, rain and direct sunlight, and avoid contamination with acids, alkalis or other foreign substances.

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