CF Industries Holdings Inc., Deerfield, Ill., said on Aug. 9 its wholly-owned subsidiary, CF Industries Inc., has elected to redeem on Sept. 10, 2021, $250,000,000 principal amount, representing one-third of the currently outstanding $750,000,000 principal amount, of its 3.450 percent Senior Notes due 2023. CF intends to use cash on hand to fund the redemption.