Manganese dioxide

Manganese dioxide (CAS 1313-13-9, EC 215-202-6, MnO2) is an inorganic mineral compound commercially available under trade names including Cellmax CMD 1, Cellmax CMD-U, Eagle Picher G, and FMH. It carries no assigned E-code and is classified under HS code 28201000.

In coatings and printing inks, manganese dioxide functions as a drier catalyst, accelerating oxidative crosslinking of alkyd resins to form durable surface films. In personal care formulations, it acts as a skin protectant and colorant, with antimicrobial properties that help control microbial activity at the formulation level.

Manganese dioxide is supplied as a dry powder in technical and specialty grades suited to coatings, cosmetics, and adhesive applications. Procurement should confirm REACH compliance documentation and supplier-specific grade specifications, as purity and particle size vary significantly between grades and directly affect performance in end-use formulations.