Maglite D Magnesium oxide 1309-48-4 C. P. Hall Acid Absorber / Acceptor Chloroprene Rubber (CR) Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE MAGLITE D is a lightly calcined, high surface area, very active magnesium oxide. Its primary use is to neutralize acids formed during the processing of elastomers. Can be used with a wide variety of elastomers including polychloroprene (Neoprene), chlorosulfonated polyethylene (Hypalon), butyl, chlorobutyl, and nitrile rubber as well as neoprene based adhesives Lightly calcined magnesium oxide. Used as acid absorber. Suits to neutralize acids formed during the processing of elastomers including polychloropren, chlorosulfonated polyethylene, butyl, chlorobutyl, and nitrile rubber as well as neoprene based adhesives.