Colloidal Silica Dioxide Jn-40 for Investment Casting Colloidal Silica

• CAS No.: 7631-86-9
• Formula: Msio2 Nh2o
• EINECS: Fskk0002
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: JN-40/30
• Classification: Silicon Dioxide
• Grade Standard: Industrial Grade
• Kind: Acidic Oxide
• Quality: First Class
• Casting Method: Directional Crystallization
• Application: Machinery Parts
• Surface Roughness: Ra0.05
• Machining Tolerance: +/-0.15mm
• Standard: GB
• Certification: ISO 9001:2008
• Process: Plasma Resin Exchange
• Molding Technics: Plasma Resin Exchange
• Material: Sico2
• Surface Preparation: Blinder
• Delivery: 7days
• Transport Package: 25 Drum +Pallet
• Specification: Nano
• Trademark: OEM
• Origin: Made in China
• HS Code: 3910000000
• Production Capacity: 100tons

Product Description

Product Description

 ♦ Silica sol belongs to colloid. It is tasteless and nontoxic, the chemical molecular formula is mSiO2.nH2O.

 ♦ Since the colloid grains are minute(10~20nm) and have relatively large specific surface area, the grains themselves are colorless and transparent, so they do not affect the natural color of the material to be covered.

 ♦ With low viscosity, it can soak the places whtere water soaks, therefore, it presents excellent dispersion and permability when being mixed with other substances.

 ♦ When the moisture contained in silica sol are evaporated, the colloid grains firmly adhere to the material surface and the combination of silicon and oxygen is then formed between grains. It is a good adhesive.

Chemical Composition of Colloidal Silica

ITEM	SiO2, %	Na2O, % ≤	pH value	Viscosity (25),mp a.s ≤	Density (25),g/cm3	Average particle diameter,nm
JN-30	30.0-32.0	0.30	8.5-10.0	7.0	1.19-1.21	10-14
JN-40	40.0-42.0	0.3-0.4	9.3-9.7	25.0	1.295-1.30	10-20

 

 

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