IOTA 704 silicone oil CAS 3982-82-9 / Tetramethyl tetraphenyl trisiloxane

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Product Overview


Product Description


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IOTA 704 silicone oil CAS 3982-82-9 / Tetramethyl tetraphenyl trisiloxane


It is a colorless transparent oily, single-component fluid designed for high vacuum of 10-7torr (untrapped). It performs well in tough, rugged applications and offers quick pump down, even after exposure to air at operating temperatures. IOTA704 is thermally and chemically stable allowing it to keep pump jets free of tars and hard carbon.






1. 1,1,5,5-Tetraphenyl-1,3,3,5-tetramethyltrisiloxane

2. 704 silicone diffusion pump Fluid

3. 704 diffusion pump fluid

4. Oil for diffusion pumps


Technical Index:


Technical indexUnitParameters
Chemical composition Tetramethyl tetraphenyl trisiloxane
Ultimate Vacuum, torr(untrapped) 10-7~10-8
Saturated Vapor Pressure, torr 5x10-8
Viscosity 25°Ccst38±3
Specific gravity   1.06-1.07
Refractive index 25°C 1.55-1.56
Flashing point (Closed cup)°C, ≥210
Congealing Point°C-35
Molecular Description 484




 Electrical and electronics industry

 TV tubes, fluorescent tubes, cathode ray tubes

 ordinary bulbs


 rectifier metallised film vacuum system


Optical industry

 surface improvements

 anti reflective coatings

 optical filters and mirrors


Metallurgy industry

 high-vacuum furnaces

 melting, degassing and sintering refractory metals; thick-film deposition


Plastics industry

 surface improvements

 mirror coatings

 protective coatings

 film coatings


Other industries

 processing metals and fuels


 molecular plants

 R & D plants

 mass spectrometry



Be used as transmission fluid in high-temperature carriers and various instruments.


Packing & Shipping



Packing and storage:

1. 1kg plastic bottles, 1gallon plastic drums, 5kg plastic drums,25kg plastic drums, 25kg Iron drums or 200kg Iron drums.

2. Transport as non-hazardous chemicals, keeping away from rain and sunlight.

3. Shelf life: 3 years.

Company Information

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As a leading manufacturer in organic silicon industry, silicon-based technology and innovation area, IOTA provide the whole industry chain silicone performance solutions. We serve the market in various fields, covering textiles and leather, food and beverages, paints, oil and natural gas, cosmetics, electronics, aerospace, automotive, construction, medical care, casting, personal care, agriculture, and LED




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Q: Are you a manufactory or trade company?

A: We are a manufactory 


Q: How long can I expect to get the sample?

A: 5-7 days under normal conditions.


Q: Do you provide free samples?

A: Yes, we can offer free sample, you just need to pay the shipping.


Q: How long is your delivery time?

A: We can deliver the goods within 7-20 days.


Q: Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery.

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