How to use fumed silica to thicken liquid systems?

You can gradually add the right amount of fumed silica to the liquid according to the needs of the liquid, and fully stir until uniform, in order to achieve the desired viscosity thickening effect.

Does this fumed silica powder thicken well?

This fumed silica works really well, and when I use epoxy resin, I add this fumed silica powder to the epoxy resin, and the epoxy thickens a lot. But please note that you'd better wear a protective mask when adding fumed silica, as silica powder is light and small and will be blown all over, it weighs nothing.

Just want to double check... can use this to strengthen gelcoat for fiberglass?

I think it would work. I use it to strengthen smooth pour for fish heads. It’s finely ground so I’m not sure if fiberglass powder would be better for you since would be stronger.

Does this fumed hydrophobic silica have insecticidal properties in a damp environment superior to diatomaceous earth?

They are very different things. I can't imagine Fumed Silica is as abrasive as diatomaceous earth, and that is what diatomaceous earth does to the exoskeleton of an insect, wear holes in it.

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TITGGI Fumed Silica Thickener for Epoxy Resin and Coatings, 1 Quart

Product ID: 417422864

Details

Brand
TITGGI
Color
White
Item Form
Powder
Item Weight
0.15 Kilograms
Material
Fumed Silica

🔥High temperature resistance

⚖️200 m²/g surface area

🛠️Non-sagging viscosity boost

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Description

⚡ Elevate your craft with TITGGI’s pure fumed silica — where precision meets power!

LIGHTWEIGHT YET MIGHTY - Pure, hydrophilic powder that blends seamlessly without adding bulk or complexity
HEAT RESISTANT STABILITY - Maintains integrity under extreme temperatures for durable, long-lasting results
MULTI PROJECT VERSATILITY - Perfect for crack filling, ceramic blanket rigidifying, resin art, and rubber reinforcement
ULTRA FINE SURFACE MASTERY - 200 m²/g specific surface area for superior dispersion and performance
EFFORTLESS THICKENING POWER - Transforms epoxy, paints, and varnishes into non-sagging, smooth finishes with just hand stirring

TITGGI’s 1 Quart 100% Pure Fumed Silica Powder is an industrial-grade, hydrophilic thickener with a massive 200 m²/g surface area. Designed for professional use, it enhances viscosity and stability in epoxy, paints, and varnishes, delivering non-sagging, heat-resistant performance. Lightweight and easy to mix, it’s ideal for filling cracks, reinforcing ceramics, and perfecting resin art, making it a must-have for millennial pros seeking flawless, durable finishes.

Specifications

ASIN	B09JSKQZL4
Best Sellers Rank	#75,631 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Household Paint Additives
Brand	TITGGI
Brand Name	TITGGI
Color	White
Customer Reviews	4.4 out of 5 stars 297 Reviews
Grade Rating	Industrial
Included Components	1
Item Form	Powder
Item Weight	0.15 Kilograms
Manufacturer	Evonik Corporation
Material	Fumed Silica Powder
Number of Items	1
Part Number	A200
UPC	669936845569
Unit Count	31.99 Fluid Ounces

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$34.07

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

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Received my product in pristine condition. Great service overall.

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