1955
AMPAC is founded as Pacific Engineering & Production Co. of Nevada (Pacific Engineering) in Henderson, Nevada, U.S. It is primarily a manufacturer of perchlorate chemicals.

1968
The PEPCON Systems product line is established. This division designs, manufactures and services water treatment equipment for water and wastewater disinfection, potable water chlorination, marine organism and
odor control.

1970
Pacific Engineering makes its initial public stock offering.

1982
Pacific Engineering merges with American Pacific, which at that time was a real estate development and financial services company with interests in California, Florida and New York, U.S.

1986
American Pacific (AMPAC) is formally adopted as the name of the corporate parent company.

1989
AMPAC relocates its manufacturing operations from Nevada to a new state-of-the-art facility in Cedar City, Utah, and the perchlorates business begins to operate as Western Electrochemical Company (WECCO).

1992
The Halotron Division is established. Halotron manufactures a series of halocarbon-based clean fire-extinguishing agents that incorporate blends of chemicals and hardware designed to replace the ozone depleting halons that were widely used in fire-extinguishing systems at the time.

1993
American Azide (AAC) is established. It is the sole North American manufacturer of sodium azide. Sodium azide is a chemical with a variety of applications, including in pharmaceutical intermediates, automotive airbag systems and biocides.

1998
AMPAC becomes the exclusive supplier of ammonium perchlorate (AP) for the U.S. aerospace and national defense programs through the acquisition of Kerr-McGee’s AP business.

2005
AMPAC acquires its Fine Chemicals business and establishes AMPAC Fine Chemicals (AFC). Located in Rancho Cordova, California, AFC manufactures active pharmaceutical ingredients (APIs) and registered intermediates under U.S. Food and Drug Administration’s (FDA) current Good Manufacturing Practices (cGMP).

2005
AMPAC celebrates its 50th anniversary.

2006
AMPAC finished construction of a new in situ biological-based perchlorate in the groundwater remediation facility in Henderson, Nevada, where it used to operate a perchlorate manufacturing facility until 1988. This remediation facility includes a 9,000-square-foot building, more than 20,000 feet of underground lines, and 17 underground vaults. During the first year of operation, the facility averaged more than one acre-foot of groundwater remediation per day.

2010
AMPAC Fine Chemicals (AFC) expands its California-based pharmaceutical chemicals business into La Porte, Texas. The addition of these facilities increases AFC's total reactor capacity by approximately 30%.

2012
AMPAC divested its in-space propulsion business.

2014
Public to Private transaction fulfilled by H.I.G. Capital, LLC.

2015
Company acquired by Huntsman Family Investments


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