Water indicator, especially in desiccantsĬobalt dichloride is a strong allergen, with a LD 50 of 80 mg/kg (rats).Įye and hand protection should be worn while handling this compound.Ĭobalt(II) chloride should be stored in an airtight container or bag to counter its strong hygroscopic nature.Ĭobalt dichloride should be converted to an insoluble form before disposal.Cobalt chloride can be used for the synthesis of many complexes, such as Hexamminecobalt (III) chloride and Potassium cobaltinitrite.It can also be found in some types of colored silica gel, though the amount is small.Ĭobalt(II) chloride, along with other cobalt(II) compounds is classified as "Substance of very high concern" in the EU and its sale is regulated. If heptahydrate crystals are desired the solution may be dried in a desiccator.Ĭobalt(II) chloride can be purchased from chemical suppliers, both as a solid and as a solution. Find the Molar Mass of Cobaltous Chloride Hexahydrate, (Co(H 2 O) 6)Cl 2 Step-by-Step There are 4 easy steps to find the molar mass of (Co(H2O)6)Cl2 based on its chemical formula. Explanation of how to find the molar mass of CoCl2 6H2O: Cobalt (II) chloride hexahydrate.A few things to consider when finding the molar mass for CoCl2. Usually, there will be a layer of unreacted cobalt carbonate/other contaminants that must be filtered out using either vacuum or gravity filtration in order to receive a pure product.īy heating this solution to dryness a light blue powder will be formed which is anhydrous cobalt chloride. Add a small amount of acid and then stir the mixture before adding another small portion, as the CO2 created can cause the mixture to overflow. The density for the three forms is 3.356 g/cm 3 (anhydrous), 2.477 g/cm 3 (dihydrate), 1.924 g/cm 3 (heptahydrate).Ĭobalt chloride heptahydrate can be synthesized by reacting two moles of hydrochloric acid with one mole of cobalt carbonate. CoCl 2 is soluble in water (52.9 g/100 mL at 20 ☌) methanol (38.5 g/100 mL), and slightly soluble in acetone, diethyl ether. The compound melts at 735 ☌ (anhydrous), 100 ☌ (dihydrate), 86 ☌ (hexahydrate). CoCl 2 ♶H 2 O cobalt(II) chloride hexahydrate SnCl 2 ♲H 2 O tin(II) (or stannous) chloride dihydrate. Please let us know how we can improve this web app.Cobalt(II) chloride is a salt that is blue when anhydrous and pink-purple when hydrated. Find the percent water in cobalt (II) chloride hexahydrate, CoCl2 6H2O CoCl 2 6 H 2 O. The sample problem below demonstrates the procedure. Related: Molecular weights of amino acids It is useful to know the percent of water contained within a hydrate. Weights of atoms and isotopes are from NIST article.
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