锌素过量还经常出现铁的褪绿症。
报道了合成碱性绿-4的最佳条件：在醋酸介质中，尿素、氯化锌为催化剂，四氯苯醌和重铬酸钾为氧化剂；
The optimal conditions for synthesis of alkali green 4 are reported, including the carbamide and zinc chloride as catalyst, chloranil and bichrome as oxidation agent in the acetic acid medium.
本公司主要以经营钛白粉、立德粉、氧化锌、氧化铁等化工产品为主，还销售经营草酸、冰醋酸，氧化铬绿等化工产品。
Our company mainly deals in chemical products like titanium, lithopone, zinc oxide, iron oxide. We also supply oxalic acid, acetic acid, chromium oxide green and so on.
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