Classification opinions
… 90 % silica. Depending on the operational parameters, lower grades of silica are available. The total amount of … Application of GIRs 1 (Note 1 (a) to Chapter 28) and 6. Adoption : 2018 … 2. Highly dispersed silicon dioxide in the … tract, nor is it metabolised. The average daily dose for adults is 0.1 to 0.2 g per 1 kg of body weight, divided into …