| CAS No.: | 7631-86-9 |
|---|---|
| Formula: | O2si |
| EINECS: | 231-545-4 |
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Product description
HL4300 is hydrophilic fumed silica with a specific surface area around 300m2/g, mainly applied in coatings & paintings, silicone rubber and Other elastomers, film & UPR, adhesives and sealants.
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Specification |
IOTA HL4300 |
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Specific sunface area(BET), m2/g |
300±25 |
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pH value in 4% dispersion |
3.7~4.5 |
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Loss on drying(2 hours at 105ºC), % |
≤2.0 |
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Loss on ignition(2 hours at 1000ºC based on material dried for 2 hours at 105ºC), % |
≤2.5 |
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Sieve Residue(45μm), mg/kg |
≤250 |
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Silica Content(Based on ignited material), % |
≥99.8 |
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Tamped Density(Based on material dried at 105ºC for 2 hours), g/dm² |
40~60 |
Applications
Coatings & Paintings
Silicone rubber and Other elastomers
Film & UPR
Adhesives and Sealants
Printing ink
Properties
Reinforcing filler in elastomers
Anti-settling, thickening and anti-sagging agent
Rheology and thixotropy control in liquid systems
Free flow aid and anti-caking aid for powders
High tear resistance
Excellent transparency in unsaturated polyester resins
Package
White kraft paper bag, 10KG/Bag
What is silica?
Silica is a form of aluminum oxide, an inorganic compound that appears as a white powder. It has certain adsorption capacity and stability, so it is widely used in cosmetics, pharmaceuticals and industrial products.
What is the role of silica in cosmetics?
In cosmetics, silica is commonly used as an adsorbent, anti-bleaching agent and thickener. It absorbs excess oil and makes makeup last longer, while also adding thickness and smoothness to products.
Is silica safe for skin?
Silica black used in cosmetics is generally considered safe and skin-friendly for most people. However, some people may be allergic or have adverse reactions to the ingredients. If you are allergic or concerned about an ingredient, it is best to do a skin test first.
In which cosmetics is silica black commonly used?
Silica black is commonly used in cosmetics such as eye shadow, foundation, face cream, lipstick, etc. to improve the texture and durability of the product.
Does silica have harmless side effects?
Generally, silica is considered safe, but some people may be allergic to it or have discomfort with its ingredients. If in doubt, it is best to avoid products containing silica and seek advice from a dermatologist.
How does silica differ from other similar ingredients?
Silica and other ingredients, such as silicones or other adsorbents, differ in their chemical properties and uses. Silica is known for its adsorption capacity and stability, giving it specific uses in cosmetics.
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