197890 -OEChem-02060822412D 0 0 0 0 0 0 0 0 0999 V2000 M END > 197890 > 3 > ChemIDplus > 012205446 > 12205-44-6 Calcium manganese oxide silicate (Ca27Mn6O33(SiO4)) Calcium manganese silicon [UN2844] [Dangerous when wet] UN2844 > 12205-44-6 > 012205446 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=012205446 $$$$