Baking Soda- #33, #57

Baking Soda- #33

Baking soda is a base with a pH of 9 and the chemical formula CHNaO3.

Source:

http://chemistry.about.com/od/molecularformulas/a/Baking-Soda-Chemical-Formula.htm

Baking Soda- #57

Baking soda, aka sodium bicarbonate, is used in fire extinguishers.

Source:

http://www.fire-extinguisher101.com/agents.html