CAS Registry Number

CAS 2071-20-7 — Bis(diphenylphosphino)methane

Bis(diphenylphosphino)methane (dppm) is a diphosphine ligand widely used in homogeneous catalysis, coordination chemistry, and organometallic synthesis for stabilizing metal complexes. It appears as a white to off-white crystalline powder with a molecular formula of C25H22P2 (not C25H27ClN2, which may be a misattribution). The correct molecular weight is 370.38 g/mol, and it is stored at ambient temperatures under inert conditions. No hazard classification applies (signal word: none). Molekula supplies Bis(diphenylphosphino)methane from research to bulk quantities with full documentation and ISO 9001:2015 traceability.