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Our Hydrophobicity silica powder has a purity of ≥ 99.8%, an original particle size of 20 nanometers. It has been modified with silane, showing excellent hydrophobicity and dispersibility, low water absorption, and the ability to efficiently regulate rheology. It can be used for thickening and preventing sedimentation in coatings, strengthening of silicone rubber, protection of cosmetics.
Cas No. :
68611-44-9Molecular Formula :
SiO2Density :
2.2 g/cm3 (20℃)Place of Origin :
ChinaGrade :
HydrophobicityPacking :
20kg/bagApperance :
White powderPurity :
99.8%minBasic information
Hydrophobic silica, CAS 7631-86-9, is a white nano powder with ≥99.8% purity and 20nm particle size. It offers excellent hydrophobicity, dispersibility, rheological control, low moisture absorption and high stability.
Specification

Application
1: Prevents paint pigment sedimentation, enhances coating wear/weather resistance, for automotive/anti-corrosion coatings.
2: Boosts plastic strength/aging resistance, improves rubber wear, key filler for modified plastics/rubber.
3: Compliant food additive, prevents caking of salt/sugar powders, maintains fluidity.
4: For semiconductor packaging, shortens adhesive curing time, enhances device sealing/insulation.
Factor
y
FAQ
Q: Are you trading company or manufacturer?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. Or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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