We make sodium silicate from drain cleaner and those little gel beads you find packaged with electronic items for humidity control. The procedure is really simple, just make a solution of 10mL with 4-8grams of sodium hydroxide, use the full 8 grams if you want stoichiometric sodium silicate, and 4 grams if you want “liquid glass” solution for doing the chemical garden experiments
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Make Sodium Silicate