Productive Wacker N20 Hydrophilic Fumed Silica Untreated Fumed Silica White Carbon Black

• Customization: Available
• CAS No.: 112945-52-5
• Formula: Sio2
• Model NO.: N20
• EINECS: 231-545-4
• Classification: Silicon Dioxide
• Grade Standard: Industrial Grade
• Kind: Acidic Oxide
• Quality: First Class
• Type: Hydrophilic
• Form: White Colloidal Powder
• Bet Surface: 175 - 225 M²/G
• Sio2 Content: > 99, 8 %
• pH-Value: 3.8 - 4.3
• Transport Package: Bag
• Specification: 10KG/Bag
• Trademark: WACKER
• Origin: Germany
• HS Code: 2811229000

Product Description

Product Description

 

HDK® N20 Pyrogenic Silica is a high-purity, synthetic, hydrophilic amorphous silica produced via advanced flame hydrolysis.
This versatile white colloidal powder is a must-have for industrial applications, offering exceptional thickening, thixotropic, and reinforcing properties. Whether you need enhanced performance in coatings, adhesives, or cosmetics, HDK® N20 delivers reliable and stable results.
 

Detailed Product Description

1. What is HDK® N20 Pyrogenic Silica?

HDK® N20 is an innovative, high-performance silica powder designed for industrial-grade applications.
Manufactured by WACKER, a globally trusted chemical supplier, this product ensures superior quality, consistency, and effectiveness.

Key Features:

√ White colloidal powder - Ultra-fine, high-purity amorphous silica
√ Hydrophilic nature - Excellent compatibility with organic systems
√ Exceptional thickening & thixotropic properties - Ideal for coatings, inks, and adhesives
√ Strong reinforcing filler - Enhances mechanical properties of elastomers (especially silicone rubber)
√ Free-flow additive - Improves powder processing
√ Stable & reliable performance - Ensures consistent results in production

 

2. Applications

 

Anti-Corrosive & Industrial Coatings

• Provides optimal viscosity control

• Prevents sagging in vertical applications

• Enhances durability & chemical resistance

Printing Inks & Adhesives

• Improves rheology & printability

• Acts as a thixotropic agent for better stability

Cosmetics & Personal Care

• Used in makeup, sunscreen & skincare for smooth texture

• Enhances spreadability & absorption

Reinforcing Filler in Elastomers

• Boosts tensile strength & tear resistance

• Improves thermal stability in silicone rubber

 

3.Best Practices for Dispersion:

√ Use high-shear mixing equipment for uniform distribution
√ Pre-disperse in liquid components before adding other ingredients
√ Avoid excessive air entrapment to prevent foam formation

 

4. Why Choose HDK® N20?

√ Proven industrial-grade quality
√ Manufactured by WACKER - a leading global supplier
√ Enhances product performance & longevity
√ Consistent particle size & purity

 

Product Parameters

Typical general characteristics	Inspection Method	Value
SiO2 content (based on the substance heated at 1000 °C for 2 h)	DIN EN ISO 3262-19	> 99,8 %
Loss of weight at 1000 °C / 2h (based on the substance dried at 105 °C for 2 h)	DIN EN ISO 3262-19	< 2 %
Density at 20 °C (SiO2)	DIN 51757	approx. 2,2 g/cm³
Refraction index at 20 °C		1,46
Silanol group density		2 SiOH/nm2

 

Physical-chemical properties	Inspection Method	Value
BET surface	DIN ISO 9277 DIN 66132	175 - 225 m²/g
pH-Value (in 4 % aqueous dispersion)	DIN EN ISO 787-9	3,8 - 4,3
Tamped density	DIN EN ISO 787-11	approx. 40 g/l
Loss on drying , ex works (2 h at 105 °C)	DIN EN ISO 787-2	< 1,5 %
Sieve residue , acc. to Mocker > 40 µm	DIN EN ISO 787-18	< 0,03 %

These figures are only intended as a guide and should not be used in preparing specifications.

 

Packaging & Storage

 

HDK® N20 is offered in following packaging:
• pallet with paper bags: 10 kg bags
• Big bags: 150 kg (big bags on pallets)
• Silotruck: depending on size of truck, approx. 3.5 to 5 tons

Storage The 'Best use before end' date of each batch is shown on the shipping label and the certificate of analysis.
HDK® N20 should be stored in the original packaging in dry storage areas.

Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable.
In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Due to the high surface area HDK® adsorbs volatiles and should be protected from humidity and volatiles.
If single bags are taken away from an original pallet, the remaining bags of this pallet must again be protected against humidity and volatiles

 

Conclusion

HDK® N20 Pyrogenic Silica is an essential industrial additive for coatings, adhesives, cosmetics, and elastomers.
With its exceptional thickening, reinforcing, and stabilizing properties, it ensures high-performance results in demanding applications.
 

Company Profile

 

Shanghai Youjiatuo Chemical Co., Ltd
A wholly-owned subsidiary of Japan's Aixiu Co., Ltd., is headquartered in Osaka, Japan.
We are dedicated to the research and development of specialty chemicals and committed to serving global customers with high-quality products and excellent services, while also building a safe and healthy environment for our employees and the community.

Our company provides products and solutions to customers in every corner of the globe, serving various key industries such as infrastructure, transportation, environmental, and consumer goods industries.
Currently, we offer high-performance solutions that address our customers' challenges and are continuously improving them to meet future demands.

Main Products:
Carbon Black
Involves 4 major fields: Rubber & Plastic; Ink; Coating; Sealant

Additives:
• Defoaming Agent
• Rheology Modifier
• Substrate Wetting Agent
• Wetting Dispersant

Fumed Silica

 

 

Our Advantages

• Comprehensive Solutions
Provide different solutions for different needs.

• Product Development
Oriented by customer needs, with professional technology as a bridge, we are dedicated to the development of the industry.

• Overseas Agency
Our business covers multitude of production industries, offering clients high-quality services and competitive products.

• Logistics & Warehousing
To meet the needs of our customers, we fully understand the importance of stable and continuous production.