What is the impact of boric acid on the corrosion resistance of glass?

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Boric acid significantly enhances the corrosion resistance of glass by forming boron oxygen tetrahedra (BO ₄) and combining them with silicon oxygen networks

Enhanced chemical stability: Boric acid can resist corrosion from most acids, bases, and organic solvents except hydrofluoric acid and hot concentrated alkali.

Acid resistant corrosion: High silicon/boron ratio (Si/B) can reduce dissolution rate and form a rich silicon oxide layer on the surface to inhibit corrosion.

Alkali corrosion resistance: Borosilicate glass (containing B ₂ O ∝) has better resistance to alkaline media than ordinary glass.