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PRECIPITATED SILICA

Precipitated Silica

HS Code: 38249025

Description

Precipitated silica is an amorphous form of silica (silicon dioxide, SiO2); it is a white, powdery material. Precipitated silica is produced by precipitation from a solution containing silicate salts.

The three main classes of amorphous silica are pyrogenic silica,  precipitated silica and silica gel. Among them, precipitated silica has the greatest commercial significance.

Properties

The particles are porous.

Primary particles with a diameter of 5 - 100 nm, and specific surface area 5-100 m2/g.

Agglomerate size is 1 - 40 µm with average pore size is > 30 nm.

Density: 1.9 - 2.1 g/cm3.

Applications

Filler, softener and performance improvement in rubber and plastics

Cleaning, thickening and polishing agent in toothpastes for oral health care

Food processing and pharmaceuticals additive as anti-caking, thickening agent, absorbent to make liquids into powders.

Food rheology modifier

Defoamer

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