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Relating to or containing cobalt, especially with valence 2.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Chemistry) of or containing cobalt in the divalent state
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(koʊˈbɔl təs)

containing bivalent cobalt.
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References in periodicals archive ?
Carter, "Disposition, toxicity, and intestinal absorption of cobaltous chloride in male fischer 344 rats," Journal of Toxicology and Environmental Health, vol.
Sodium hypophosphite monohydrate (Na[H.sub.2]P[O.sub.2] x [H.sub.2]O), cobaltous chloride hexahydrate (Co[Cl.sub.2] x 6[H.sub.2]O), sodium chloride (NaCl), boric acid ([H.sub.3]B[O.sub.3]), ethanol (C[H.sub.3]C[H.sub.2]OH), sodium hydroxide (NaOH), hydrochloric acid (HCl, 36-38 wt%), and sulfuric acid ([H.sub.2]S[O.sub.4], 98 wt%) were all purchased from Alfa Aesar with an analytical reagent (AR) and were used without further purification.
2) Premix that provided the following vitamin and minerals per kg diet: vitamin A, 3,500 IU; vitamin D3, 600 IU; vitamin E, 140 IU; vitamin K, 1.5 mg; vitamin B1, 1 mg; vitamin B2, 4.8 mg; vitamin B6, 1.5 mg; pantothenic acid, 12 mg; niacin, 30.4 mg; biotin, 0.05 mg; folacin, 0.3 mg; vitamin B12, 18 pg; Fe (ferrous sulfate heptahydrate, 20.09% Fe), 150 mg; Cu (copper sulfate pentahydrate, 25.45% Cu), 15.99 mg; Mn (manganese oxide, 77.45% Mn), 2.58 mg; Zn (zinc oxide, 80.34% Zn), 73.44 mg; Co (cobaltous sulfate monohydrate, 32% Co), 0.40 mg; Se (sodium selenite, 45.66% Se), 0.42 mg; and I (potassium iodate, 59.06% I), 0.40 mg.
Some trace elements have potential to expand the lattice parameters of the synthetic apatite crystal cell along the a-axis such as ferrous (Fe2+), ferric (Fe3+), strontium (Sr2+) and zinc ions (Zn2+) (molar fraction >10%) whereas it shrinks with silicate (SiO44-), carbonate (CO32-), magnesium (Mg2+), Zn2+ (molar fraction < 10%) and titanium ions (Ti4+).SiO44-, CO32-, Zn2+, Fe2+, Fe3+ and strontium ions (Sr2+) can increase the lattice parameters along the c-axis, decreased by Mg2+, nickelous (Ni2+), chromic (Cr3+), cobaltous (Co2+) and Ti4+.