NewMarket Corp., a major petroleum additive company based in Richmond, Virginia, has entered into an agreement to purchase AMPAC Intermediate Holdings LLC of Cedar City. AMPAC Holdings is the parent company of American Pacific Corp. (AMPAC). The acquisition price is approximately $700 million, a NewMarket release said.

AMPAC is a leading North American manufacturer of critical performance additives used in solid rocket motors for space launch and military defense applications. AMPAC is qualified on many NASA and Department of Defense programs and has been serving space launch and national defense programs for more than 60 years. AMPAC also manufactures Halotron BrX, a clean and Please log in to see the rest of this story.