Maglite A Magnesium oxide 1309-48-4 C. P. Hall Acid Absorber / Acceptor Chloroprene Rubber (CR) ADHESIVE MAGLITE A is a lightly calcined, high activity magnesium oxide of slightly finer particle size than Maglite D. This product is used in applications where dispersion characteristics are important, such as polychloroprene-based adhesives and to provide stability with other elastomers Lightly calcined, high activity magnesium oxide. Used as acid absorber. Suits in applications where dispersion characteristics are important, such as polychloroprene-based adhesives.