Use CaCO3 powder as antacid agent Chemistry Stack Exchange
Use CaCO3 powder as antacid agent. A well known strategy for paper maintenance is to store it in a antacid enviroment (special boxes, envelopes etc.). There are also special preservation acidfree papers and archival material (envelopes etc.) "buffered" with a base material (usually C a C O X 3) to help keep the pH of the paper to be preserved ...