| 摘要 |
Provided are amorphous silica particles for application to industrial fields where there are increasing desires for high purity and colorlessness. The amorphous silica particles are produced through the steps of hydrolysis of an alkoxide, vacuum drying, and firing. The amorphous silica particles have been reduced in coloration and in Fe content, which is causative of coloration of the silica, and can meet the desires. The amorphous silica is characterized by having an Fe content of 20 ppm or less. |
