MHT 100 Magnesium hydroxide Dow Chemical Corrosion Inhibitors Extenders / Fillers >> Magnesium hydroxide Acid Absorber / Acceptor ADHESIVE MHT* 100 Magnesium Hydroxide Technical Grade powder is produced from natural brine deposits. After bromine is removed, magnesium hydroxide is produced via precipitation by adding dolomitic lime to generate a precipitated slurry. This slurry is thickened in a settling tank, pumped through a filter system and dried into powdered form of 98% pure MHT 100 Magnesium Hydroxide Technical Grade product. MHT 100 is used as a pigment extender, acid neutralizer and corrosion preventative for coatings and adhesives that generate acids upon curing. Magnesium hydroxide. Used as an extender, acid neutralizer and corrosion preventative for adhesives that generate acids upon curing.