In the past, people used sodium silicate for water glassing. These days, pickling lime, also known as calcium hydroxide, is the go-to choice because it's easier to use and get a hold of.

The Journal of Infectious Diseases, Vol. 3, Supplement 2. Some of the Papers Presented to the Laboratory Section of the American Public Health Association at the Boston Meeting, Sept. 25, 1905 (Feb., ...

lime is also called calcium hydroxide and is derived from processed limestone rock. Before commercially available lime, wood ...