What is the chemical composition of the diatomaceous earth (DE) preparation?

Label:chem

Topic
A food-grade DE product called “Silicon Diatomeas®” supplied by Vitality Gesf S.L. (Valencia, Spain).
Answer
The product contained 92 % SiO₂, corresponding to 43 % elemental silicon as determined by inductively coupled plasma optical emission spectrometry (ICP-OES).
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