Retrieving "Sodium Sulfate" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Ultramarine

   Linked via "sodium sulfate"

   Synthesis Pathway
   Synthetic ultramarine is manufactured via a high-temperature solid-state reaction. The process involves heating a carefully measured mixture of kaolin clay (as the silica source), sodium sulfate, sulfur, and coal or charcoal within a closed kiln.
   The simplified idealized reaction pathway is often represented as: