https://sinobarium.com/manganeseiv-oxide-mno2/
Manganese(IV) oxide (MnO2) is a compound commonly known as manganese dioxide or pyrolusite. It is a blackish or dark brown solid, and the most important ore of...
chemical groupthe largestmanganeseivoxide
https://www.sigmaaldrich.com/US/en/product/aablocksinc/aabh99a44d4d?context=bbe
Titanium barium oxide; CAS Number: 12047-27-7; Synonyms: barium titanium(IV) oxide; Linear Formula: O3Ti1Ba1; find AA BLOCKS, INC. -AABH99A44D4D MSDS, related...
barium oxidetitanium