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250-30
255 275
phenyl silicone oil p ph
Physical & Chemical Properties:
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Names of products
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250-30
phenyl
silicone oil
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255
phenyl
silicone oil
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27
275 super high vacuum diffusion pump oil (methyl)
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Product standard
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Q/GHPC35-1997
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Q/GHPC3-1997
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Q/GHPC115-1998
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Appearance
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Colorless,
or yellowish transparent liquid
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Colorless,
or yellowish transparent liquid
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Colour degree
≤
40
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Viscosity (25℃)mm2 / s
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25 - 40
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50 - 100
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165 - 185
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Freezing point ℃,
≤
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- 45
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- 40
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- 14
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Flash point ℃,
≥
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240
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280
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243
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Density (25/25℃) g/cm3
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1.01 1.08
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1.02 1.08
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1.09 1.10
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Refractive index (25℃)
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1.470 1.485
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1.480 1.495
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1.5765 1.5785
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Relative dielectric constant
(100℃,50Hz)
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2.50 2.80
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Property
and Application:
250-30:
low
viscosity, low freezing point, good heat resistivity, high flash
point, low expansion coefficient, excellent electrical
insulation property. Used as insulation impregnating agent for
large scale power condenser and separation and anti-adherent for
blood bag and transfusion bag, basic oil for surgical medicines,
cosmetics and oil additives for skin-care, chilblain preventive
agents.
255: it
has the general properties of methyl silicone oil, with better
heat resistivity, excellent anti-oxidizing ,lubricating ,and
anti-radiation properties, lower freezing point and stability to
water, used in insulation, lubrication,damping, anti-shock,dustproofing,
and as high temp. thermal carrier.
275: very
low saturated vapor pressure, good heat resistivity and
excellent anti-oxidizing property, used in high vacuum.
Industry, high vacuum. Coating for electronics, particle
accelerator, electronic microscope and display, etc.
Packaging:
200 kg / barrel
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