Carbon, Cobalt, Hydrogen, Oxygenrdavis Cobalt Citrate Cobalt (II) citrate, hydrate CAS #866-81-9 Co(C6H5O7)2 · nH2O FW 555 Downloads Cobalt Citrate Information Sheet Cobalt Citrate SDS US Specifications: Percent cobalt: 20.8 – 23.7 % Appearance: Pink powder 100 lb. Fiber drum Item # 1200-01