This little website shows you the pH of various acids, bases, food products, bodily fluids, cleaners, and more!
Here's a random substance:
pH of Sodium Metasilicate
Chemical formula: Na2SiO3
Also known as: Liquid glass, Waterglass
Sodium Metasilicate is Basic
At concentration of 1 mM, it has a pH of 11
At concentration of 10 mM, it has a pH of 11.91
At concentration of 100 mM, it has a pH of 12.62