Product name:Silicone fluid NV-SIPH-VP704

Product code:NV-SIPH-VP704

Chemical Information

Main components: Tetramethyl Tetraphenyl Trisiloxane

Cas No.: 3982-82-9

Molecular structure: C₂₈H₃₂O₂Si₃

CH3      C6H5   CH3

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CH3-Si - O - Si - O - Si-CH3

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C6H5    C6H5    C6H5

Product Description

NV-SIPH-VP-704 is a single-component, ultra-pure phenylmethylsiloxane fluid designed specifically for high-vacuum diffusion pumps. Through advanced molecular distillation, light-end volatiles are completely stripped, resulting in an exceptionally low saturated vapor pressure and narrow boiling point range.Due to its precise chemical structure and high phenyl density, NV-SIPH-VP-704 exhibits remarkable resistance to thermal oxidation, radiation, and chemical breakdown. It is the industry-standard fluid for achieving clean, rapid, and sustainable vacuum execution down to the 10-7 to 10-8 Torr range without the risk of tar or sludge formation.

Typical propertes:

Appearance: Colorless to light-yellow, transparent liquid

Viscosity (@ 25℃): 36 - 40 cSt

Specific Gravity(@ 25℃):1.020 - 1.080

Flash Point ≥210℃

Pour Point: -14 to -18℃

Ultimate Vacuum: ≤ 3.1*10-7 Torr

Refractive Index(@ 25℃):1.550 - 1.560

Key Benefits & Features

Fast Pumping Speed: Optimizes vapor jet momentum inside pump stages, maximizing gas throughput and lowering cycle times.

Excellent Thermal Ceiling: Resists breakdown at high boiler temperatures, minimizing fluid replacement frequencies.

Oxidation & Air-Exposure Tolerance: Does not explode or form sticky residues if accidentally exposed to atmospheric pressure while hot.

High Chemical Inertness: Compatible with most process gases and metals inside the vacuum chamber.

Applications

Vacuum Metallization & Coating: Decorative plastic plating, roll-to-roll web coating, and optical anti-reflective thin-film deposition.

High-Vacuum Metallurgy: Used in vacuum induction furnaces, electron-beam welding equipment, and sintering systems.

Electronics Manufacturing: Evacuation of high-power transmitting tubes, cathode-ray tubes, and specialized microwave electronics.

Handling & Storage:

Keep containers hermetically sealed to prevent moisture absorption and ambient particle contamination.

Shelf Life: 60 months from the date of manufacture when stored in original, unopened packaging in a cool, dry environment.