Whether it's ensuring your smartphone camera takes sharp photos or acting as a heavy-duty desiccant in a laboratory, barium protoxide remains a cornerstone of material science. BARIUM OXIDE CAS Number - NJ.gov
“Barium oxide reacts as a strong base. Combines exothermically with all categories of acids.” CAMEO Chemicals (.gov) barium protoxide
While useful, barium protoxide is not to be trifled with. It is and can be lethal if ingested in significant amounts. It is also highly caustic; contact with the skin or eyes can cause severe irritation or burns. Because it reacts exothermically (releasing heat) with water to form barium hydroxide, it must be stored in airtight containers to prevent it from literally pulling moisture out of the air. Perspectives from the Lab Chemists often note its reactivity in specialized forums: Whether it's ensuring your smartphone camera takes sharp