White carbon black, also known as precipitated silica or fumed silica, is a synthetic amorphous silicon dioxide (SiO2) with a fine, white powdery structure. Unlike traditional carbon black, it offers unique advantages such as high purity, excellent whiteness, and versatile functional properties, making it a critical additive across industries ranging from rubber and plastics to coatings, adhesives, and pharmaceuticals. Its tailored particle size, porosity, and surface characteristics enable it to deliver enhanced performance in diverse applications.

Key Applications

Rubber Industry: The largest application area—used in tire treads, white rubber goods (e.g., footwear, hoses), and specialty rubbers. It enhances wear resistance, grip, and elasticity, while maintaining the white color of non-black rubber products.

Plastics & Polymers: Acts as a reinforcing filler and anti-blocking agent in thermoplastics, thermosets, and composites. It improves dimensional stability, impact resistance, and heat resistance, and prevents sticking in plastic films or molded parts.

Coatings & Inks: Used as a matting agent, anti-settling agent, and reinforcing additive in architectural coatings, industrial coatings, and printing inks. It enhances scratch resistance, weatherability, and film hardness, while providing a smooth, matte finish.

Adhesives & Sealants: Functions as a thickener and thixotropic agent, improving viscosity control and preventing sagging. It enhances bond strength, moisture resistance, and durability of adhesives and sealants.

Pharmaceuticals & Cosmetics: Approved for use in pharmaceutical formulations as a glidant, anti-caking agent, or adsorbent (e.g., in tablets, powders). In cosmetics, it acts as a thickener, absorbent, or texturizing agent in products like lotions, powders, and makeup.

Food & Feed Industry: Used as a food-grade anti-caking agent (E551) to prevent clumping in powdered foods (e.g., spices, flour) and animal feed, ensuring flowability and stability.

CAS NO:14808-60-7;112945-52-5;60676-86-0;7631-86-9;99439-28-8;10279-57-9

EC NO:215-683-2;238-878-4;262-373-8;231-545-4;238-878-4

Molecular Formula:SiO₂

Molecular Weight:60.084

Synonyms:;Quartz;acticel;cab-o-sil;cab-o-sperse;Fumed Silicas;Silica, fused;Silica, vitreous;flatting agents;flatting agent;delustering agent;MATTING AGENT;Aerosil;Amorphous silica;Fumed silica;Silica;Quartz sand;White carbon black;white carbon;White carbon black,combustion method;Pelleted Hydrated Silica;Hydrated Silica;Silicondioxidehydrate;Silica, hydrate;Precipitated silica;Silica Dioxide;

Molecular Structure: