Cupric Sulfate, Basic
Title: Cupric Sulfate, Basic
CAS Registry Number: 1332-14-5
CAS Name: Copper hydroxide sulfate
Additional Names: cupric subsulfate
Trademarks: Basi-Cop; Cuproxat (Agrolinz)
Literature References: Salts of variable compositions of cupric sulfate and cupric hydroxide or oxide. Occurs in nature as the mineral dolerophane, CuSO4.CuO. Reviews: Frear, Chemistry of the Pesticides (Van Nostrand, New York, 3rd ed., 1955) pp 316-323; idem, Agricultural Chemistry vol. 2 (Van Nostrand, New York, 1951) pp 524-525; Gmelins, Copper (8th ed.) 60B, 579-589 (1958). See also Burgundy Mixture.
Derivative Type: Copper sulfate tribasic
Molecular Formula: Cu4H6O10S
Molecular Weight: 452.29
Percent Composition: Cu 56.20%, H 1.34%, O 35.37%, S 7.09%
Properties: Occurs in nature as the mineral brochantite; monohydrate as the mineral langite. Initial product formed during preparation of Bordeaux mixture, q.v., from CuSO4 and Ca(OH)2: Frear, loc. cit. Also prepd from CuSO4 and Cu(OH)2: Denk, Leschhorn, Z. Anorg. Allg. Chem. 336, 58 (1965). Very finely divided, light blue, gelatinous particles. Practically insol in water. Sol in plant and mineral acids, NH4OH.
Derivative Type: Copper sulfate dibasic
Molecular Formula: Cu3H4O8S
Molecular Weight: 354.73
Percent Composition: Cu 53.74%, H 1.14%, O 36.08%, S 9.04%
Properties: Occurs in nature as the mineral antlerite. Blue-green, rhombic, bipyramidal crystals. Practically insol in water.
Use: Fungicide for plants, seed treatment.

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