Maleic anhydride manufacturers tell you the preparation method of potassium hydroxide ethanol solution and the storage requirements of potassium hydroxide solution. The molecular formula of potassium hydroxide is Koh, also known as caustic potassium, a strong alkaline chemical raw material. It is often used to make potassium carbonate (glass for TV picture tube and special glass), soft soap, detergent and pigment, etc. it is also used in electroplating, alkaline electrolyte battery, etc.

配制0.1mol/L氢氧化钾500ml步骤：(1)计算:0.1mol/L*0.5L*56g/mol=2.8g(2)称量：称氢氧化钾2.8g(3)溶解：固体放入小烧杯，加少量蒸馏水溶解，用玻璃棒搅拌(4)冷却：室温(5)转移：用玻璃棒引流转入500ml容量瓶(6)洗涤：用蒸馏水洗涤烧杯，玻璃棒2-3次,洗涤液也转入容量瓶(7)摇动：摇动容量瓶让溶液混合均匀(8)定容:加蒸馏水离刻度线1-2cm时，改用胶头滴管滴加蒸馏水，到平视时凹液面的切线与刻度线重合时结束。(9)摇匀：震荡容量瓶(10)装瓶:装入洁净干燥的试剂瓶,贴上标签。

Preparation of 0.1mol/l potassium hydroxide 500ml steps: (1) calculation: 0.1mol/l * 0.5L * 56g / mol = 2.8g (2) weighing: 2.8g potassium hydroxide (3) dissolving: put the solid into a small beaker, add a small amount of distilled water to dissolve, stir with a glass rod (4) cooling: to room temperature (5) transferring: drain with a glass rod into a 500ml volumetric flask (6) washing: wash the beaker with distilled water, glass rod 2-3 times, The washing solution is also transferred into the volumetric flask (7) shaking: shaking the volumetric flask to make the solution mix evenly (8) constant volume: add distilled water to 1-2cm away from the scale line, use a rubber tipped dropper to drop distilled water until the tangent line of concave liquid level coincides with the scale line in head up view. (9) Shake well: shake volumetric flask (10) bottling: put clean and dry reagent bottle and label.

氢氧化钾溶液储存要求

Storage requirements of potassium hydroxide solution

1、运输注意事项：铁路运输时，钢桶包装的可用敞车运输。起运时包装要完整，装载应稳妥。运输过程中要确保容器不泄漏、不倒塌、不坠落、不损坏。严禁与易燃物或可燃物、酸类、食用化学品等混装混运。运输时运输车辆应配备泄漏应急处理设备；

1. Transportation precautions: during railway transportation, the steel drum can be transported by gondola car. The packing should be complete and the loading should be safe. During transportation, ensure that the container does not leak, collapse, fall or damage. It is strictly forbidden to mix with inflammables or inflammables, acids, edible chemicals, etc. Transportation vehicles should be equipped with leakage emergency treatment equipment during transportation;

2、储存注意事项：储存于阴凉、干燥、通风良好的库房。远离火种、热源。库内湿度更好不大于85%。包装必须密封，切勿受潮。应与易（可）燃物、酸类等分开存放，切忌混储。储区应备有合适的材料收容泄漏物；

2. Storage precautions: store in a cool, dry and well ventilated warehouse. Keep away from fire and heat source. The humidity in the warehouse should not be more than 85%. The package must be sealed and free from moisture. It should be stored separately from combustible materials and acids, and mixed storage should be avoided. The storage area should be equipped with suitable materials to contain the leakage;

3、包装方法：固体可装入0.5毫米厚的钢桶中严封，每桶净重不超过100公斤；塑料袋或二层牛皮纸袋外全开口或中开口钢桶；螺纹口玻璃瓶、铁盖压口玻璃瓶、塑料瓶或金属桶（罐）外普通木箱；螺纹口玻璃瓶、塑料瓶或镀锡薄钢板桶（罐）外满底板花格箱、纤维板箱或胶合板箱；镀锡薄钢板桶（罐）、金属桶（罐）、塑料瓶或金属软管外瓦楞纸箱。

3. Packing method: solid can be packed in 0.5 mm thick steel drum and sealed tightly, net weight of each drum is not more than 100 kg; plastic bag or two-layer kraft paper bag with full opening or middle opening steel drum; screw mouth glass bottle, iron cap pressure mouth glass bottle, plastic bottle or metal barrel (can) with ordinary wooden case; screw mouth glass bottle, plastic bottle or tinplate barrel (can) with full bottom lattice box and fiberboard Box or plywood box; tinplate barrel (can), metal barrel (can), plastic bottle or metal hose corrugated box.