物质安全资料表 序 号:939 第1页/ 4页 一、 物品与厂商资料 物品名称:重铬酸钠 (sodium dichromate) 物品编号:- 制造商或 ..
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细说明 中文名称:重铬酸钠红矾钠 英文名称: sodium dichromate CAS No.: 7789-12-0 分子式: Na2Cr2O7.2H2O 分子量: 297.99 含量: 工业级 一级、二级≥98.0%。 外观与性状: 桔红色结晶,易潮解。 熔点(℃):
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The mixture with 1:2 of molar ratio of sodium dichromate to1,3-dichloro-2-propanol was stirred at 23-27 ℃ for 5 hours. Under the above conditions, pure 1,3-dichloroacetone was obtained with a yield of 79.6%.
采用重铬酸钠/浓硫酸氧化剂体系氧化1,3-二氯-2-丙醇制备1,3-二氯丙酮,重铬酸钠与1,3-二氯-2-丙醇的摩尔比为1:2,将稀释后的硫酸滴入1,3-二氯-2-丙醇与重铬酸钠水溶液的混合物中,在温度为23-27℃的条件下搅拌反应5h,产率79.6%。
参考来源 - 氟康唑的合成与有机物定量结构—性质关系研究·2,447,543篇论文数据,部分数据来源于NoteExpress
N a soluble crystalline solid compound, usually obtained as red or orange crystals and used as an oxidizing agent, corrosion inhibitor, and mordant. Formula Na2Cr2O7 重铬酸钠 (Also called (not in technical usage) sodium bichromate)
Rinse with water will be clear pattern, and then 5% sodium dichromate coating surface in the screen version of the brushing time, that is made of printed silk screen drama.
用开水冲洗便可得到清晰的花纹,再用5%的重铬酸钠在丝网版的涂胶面涂刷一次,即制成印剧丝网版。
Chemical treatments, such as sodium dichromate solutions, may facilitate the more rapid formation of the passive film on a stainless steel surface already free of scale or foreign matter.
化学处理,例如重铬酸钠溶液,可以促进无氧化膜和杂质不锈钢表面的钝化膜更快速度的生成。
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