氢氧化钾可从电解高纯度的氯化钾水溶液制得。所用的电解槽形式以及生产过程类似氢氧化钠。使用隔膜电解槽时,所得的电解液含有10%~15%(质量)的氢氧化钾和约10%(质量)的氯化钾。
Potassium hydroxide can be prepared by electrolysis of high-purity potassium chloride aqueous solution. The type of electrolytic cell used and the production process are similar to sodium hydroxide. When diaphragm electrolyzer is used, the electrolyte obtained contains 10%~15% (mass) potassium hydroxide and about 10% (mass) potassium chloride.
经蒸发、浓缩、冷却,大部分的氯化钾结晶析出,分离后得到含氢氧化钾45%~50%的产品(含氯化钾0.6%)。采用水银电解法可以制得高纯度的氢氧化钾,但应控制氯化钾水溶液中重金属杂质的含量在0.1ppm以下,以免氯气中含氢过高。
After evaporation, concentration and cooling, most potassium chloride crystals are separated, and the product containing 45%~50% potassium hydroxide (containing 0.6% potassium chloride) is obtained after separation. High purity potassium hydroxide can be prepared by mercury electrolysis, but the content of heavy metal impurities in potassium chloride aqueous solution should be controlled below 0.1 ppm to avoid excessive hydrogen content in chlorine.
采用离子膜电解法须使用专用的离子交换膜。氢氧化钾比氢氧化钠难于脱水。工业固体氢氧化钾的纯度为88%~92%,固体有块状和片状两种。液体氢氧化钾有45%和50%两种浓度规格。
Ion exchange membrane shall be used for ion-exchange membrane electrolysis. Potassium hydroxide is harder to dehydrate than sodium hydroxide. The purity of industrial solid potassium hydroxide is 88%~92%. There are two kinds of solid: blocky and flaky. There are two concentration specifications of liquid potassium hydroxide: 45% and 50%.
无机工业用作生产钾盐,如高锰酸钾、亚硝酸钾、磷酸氢二钾等的原料。日化工业用作制造钾肥皂、洗污肥皂、洗头软皂、雪花膏、冷霜、洗发膏等的原料。制药工业用于制造黄体酮、香兰素等原料。
Inorganic industry is used as raw materials for the production of potassium salts, such as potassium permanganate, potassium nitrite, potassium hydrogen phosphate, etc. The daily chemical industry is used as the raw material for manufacturing potassium soap, dirt washing soap, shampoo, cream, cold cream, shampoo, etc. The pharmaceutical industry is used to manufacture such raw materials as progesterone and vanillin.
染料工业用于制造三聚氰胺染料。电池工业用于制造碱性蓄电地。用作皂化试剂、二氧化碳和水分的吸收剂,分析试剂,碱性剂;可用作制品发色剂,冶金加热剂和皮革脱脂等方面;用作干燥剂、吸收剂,还用于电镀、雕刻、石印术等。
The dye industry is used to make melamine dyes. The battery industry is used to manufacture alkaline storage ground. Used as saponification reagent, absorbent of carbon dioxide and water, analytical reagent and alkaline agent; It can be used as product chromogenic agent, metallurgical heating agent, leather degreasing, etc; It is used as desiccant, absorbent, electroplating, carving, lithography, etc.
Do you have any questions about potassium hydroxide? Here we remind you that you should fully understand before and after use, otherwise it is very easy to be dangerous. Come to our website if you need http://www.jinhao360.com Leave a message for consultation!