| 摘要 |
1,156,738. Copper ammine complexes. FAR. BENFABRIKEN BAYER A.G. 3 Nov., 1967 [15 July, 1967], No. 50117/67. Heading C2C. [Also in Division D1] Copper ammine complexes of nitrilo-triacetic acid are produced by treating an aqueous solution containing Cu<SP>2</SP> + ions with ammonia and/or an amine to give a complex which is treated with a nitrilo-triacetic acid salt. The product may be formed at a pH of 8-10À5 at which a complex containing two mols of nitrilo-triacetic acid per gram atom of Cu is formed. In the examples ammine complexes are formed comprising (i) ammonia, (ii) methylamine, (iii) nbutylamine and (iv) ammonia + methylamine.
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