Eco-Pioneer Borax is hydrated sodium borate, a mineral ore of interlocked chains of boron, hydrogen, oxygen, water and sodium. This borax is created from refining recovered ore from dried playa lake beds. A playa lake is one that fills with rain water then dries out leaving various salts. The deposits are refined by boiling the ore in water and adding carbonated soda which causes the borax to dissolve and impurities to settle out. The water borax mixture is poured off and cooled, allowing borax crystals to form.
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