Silica (Select 450) (CAS No.: 14808-60-7), chemically known as silicon dioxide (SiO₂), is a premium, high-purity functional silica engineered for superior performance in diverse industrial scenarios. It is a white, odorless, amorphous powder with exceptional surface activity, high specific surface area, and excellent dispersibility. Our Select 450 grade is produced via the advanced fumed silica (pyrogenic) process—combusting high-purity silicon tetrachloride (SiCl₄) in an oxygen-hydrogen flame—at state-of-the-art facilities in China’s key chemical clusters (Jiangsu, Zhejiang, Shandong).

With a controlled specific surface area of 450 m²/g (±30 m²/g) and strict impurity control, Select 450 meets international standards (GB/T 20020-2013, ASTM D1765-11, ISO 787-1:2019) and is tailored for applications requiring reinforcement, thickening, anti-settling, or matting properties. Key quality indicators are rigorously monitored: purity (SiO₂) ≥99.8%, moisture content ≤0.5%, Fe₂O₃ ≤0.01%, Al₂O₃ ≤0.03%, and pH value (4% aqueous suspension) 3.8-4.5. As a leading Chinese supplier, we leverage China’s mature silica production chain, advanced process technology, and large-scale manufacturing capacity to deliver consistent, cost-effective Silica (Select 450) to global customers.