Title: Cupric Oxide
CAS Registry Number: 1317-38-0
CAS Name: Copper oxide (CuO)
Additional Names: black copper oxide; C.I. 77403; C.I. Pigment Black 15; copper(II) oxide
Molecular Formula: CuO
Molecular Weight: 79.55
Percent Composition: Cu 79.88%, O 20.11%
Literature References: Occurs in nature as the mineral tenorite. Prepn: R. Ruer, J. Kuschmann, Z. Anorg. Allg. Chem. 154, 69 (1926); O. Glemser, H. Sauer in Handbook of Preparative Inorganic Chemistry vol. 2, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1965) p 1012. Soly study: A. Hayward et al., Nature 215, 730 (1967). Bioavailability study: S. Aoyagi, D. H. Baker, Poult. Sci. 72, 1075 (1993). Review of physical properties: E. Gmelin, Indian J. Pure Appl. Phys. 30, 596-608 (1992); of use as a nutritional supplement: D. H. Baker, J. Nutr. 129, 2278-2279 (1999).
Properties: Pure CuO (tenorite) is a steel-grey to black p-type semiconductor, mp »1330°. d »6.4. Insol in water. Slightly sol in alkalis; sol in acids and ammonia. Heat of formation (25°): -37.1 kcal/mol.
Melting point: mp »1330°
Density: d »6.4
Use: As pigment in glass, ceramics, enamels, porcelain glazes, artificial gems; in mfr of rayon, other Cu compds; in sweetening petr gases; in galvanic electrodes; as flux in metallurgy; in correcting Cu deficiencies in soil; as optical-glass polishing agent; in antifouling paints, pyrotechnic compositions; as exciter in phosphor mixtures; as catalyst for organic reactions; in high temp superconductors.
Therap-Cat: Copper supplement.
Therap-Cat-Vet: Copper supplement in ruminants.
Keywords: Replenishers/Supplements; Copper.