Cobalt(II)OXIDE, CERAMIC & GLASS SUPPLIES < , 1/2, 1, 2, 5, pounds

Description

Cobalt(II)OXIDE, CERAMIC & GLASS SUPPLIES < , 1/2, 1, 2, 5,  pounds
Small Packages under ONE Pound will now Ship First Class Mail
Cobalt(II) oxide or cobalt monoxide is an inorganic compound that appears as olive-green to red crystals, or as a greyish or black powder. It is used extensively in the ceramics industry as an additive to create blue colored glazes and enamels as well as in the chemical industry for producing cobalt(II) salts.
CoO crystals adopt the periclase (rock salt) structure with a lattice constant of 4.2615 Å.
It is antiferromagnetic below 16 °C.
Cobalt(II,III) oxide decomposes to cobalt(II) oxide at 950 °C:
2 Co3O4 → 6 CoO + O2
Though commercially available, cobalt(II) oxide may be prepared in the laboratory by electrolyzing a solution of cobalt(II) chloride.[7]
CoCl2 + H2O → CoO + H2 + Cl2
It may also be prepared by precipitating the hydroxide, followed by thermal dehydration:
CoX + 2 KOH → Co(OH)2 + K2X
Co(OH)2 → CoO + H2O
Cobalt(II) oxide has for centuries used as a coloring agent on kiln fired pottery. The additive provides a deep shade of blue named cobalt blue. The band gap (CoO) is around 2.4 eV. It also is used in cobalt blue glass
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Testing of raw materials should be an integral part of ceramic or glass making /  manufacturing. Upon receipt of any new material, we strongly recommend that you test the material. "Paul Brown Studio Arts and Supplies" . has no control over either the variations that may occur in the natural materials or their application. All products are supplied as is from the manufacturer. No additional processing or technical support is supplied. Therefore, our products are sold with the understanding that the user is solely responsible for determining suitability for any purpose and the results obtained. There are no warranties expressed or implied, regarding the user’s finished product or results.
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