单词	cuprammonium
释义	cuprammonium /ˌkjuːprəˈməʊnɪəm / noun [as modifier] Chemistry A complex ion, Cu(NH3)42+, formed in solution when ammonia is added to copper salts. The solution is deep blue and is used to dissolve cellulose.By contrast, the cuprammonium rayon fibers are made from cotton linters as main raw material.... If ammonia is added to a copper compound then a deep blue solution called cuprammonium hydroxide is formed. The two most commonly used production methods for rayon are the cuprammonium process and the viscose process.
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