Potassium hydroxide is a common inorganic base with the chemical formula of KOH and molecular weight of 56.1. Next, follow the small make-up to understand the relevant information of potassium hydroxide! Xiaobian is waiting for you here!

氫氧化鉀的性質(zhì)

Properties of potassium hydroxide

白色粉末或片狀固體，熔點(diǎn)380 ℃，沸點(diǎn)1324 ℃，相對(duì)密度2.04 g/cm3，折射率n20/D 1.421，蒸汽壓1mmHg（719 ℃）。其性質(zhì)與氫氧化鈉相似，具強(qiáng)堿性及腐蝕性，0.1 mol/L溶液的pH為13.5。極易吸收空氣中水分而潮解，吸收二氧化碳而成碳酸鉀。溶于約0.6份熱水、0.9份冷水、3份乙醇、2.5份甘油，微溶于醚。當(dāng)溶解于水、醇或用酸處理時(shí)產(chǎn)生大量熱量。中等毒，半數(shù)致死量（大鼠，經(jīng)口）1230 mg/kg。

White powder or flake solid, melting point 380 ℃, boiling point 1324 ℃, relative density 2.04 g / cm3, refractive index N20 / D 1.421, vapor pressure 1mmhg (719 ℃). Its properties are similar to that of sodium hydroxide, with strong alkalinity and corrosiveness. The pH value of 0.1 mol / L solution is 13.5. It is easy to absorb moisture in the air and deliquescence, and absorb carbon dioxide to form potassium carbonate. It is soluble in about 0.6 parts of hot water, 0.9 parts of cold water, 3 parts of ethanol, 2.5 parts of glycerol, slightly soluble in ether. When dissolved in water, alcohol or treated with acid, a lot of heat is produced. The median lethal dose (LD50) was 1230 mg / kg in rats.

氫氧化鉀的溶液配制

Preparation of potassium hydroxide solution

配制500 ml 、10%的氫氧化鉀溶液配制方百法：

To prepare 500 ml 10% potassium hydroxide solution

1、計(jì)度算氫氧化鉀的稱量質(zhì)量m = 500 gx10%= 50 g ；

1. The weight of potassium hydroxide is 500 G x 10% = 50 G;

2、在100ml 小塑料問(wèn)杯里在電子天平上稱量50.0 g氫氧化鉀；

2. Weigh 50.0 G potassium hydroxide on an electronic balance in a 100ml plastic cup;

3、用蒸餾水緩慢加答入，攪拌溶解，稀釋后再轉(zhuǎn)移到500 ml 容量瓶中定容；

3. Add distilled water slowly, stir and dissolve, then transfer to 500 ml volumetric flask for constant volume after dilution;

4、再回轉(zhuǎn)移到500 ml的塑料試劑瓶中，貼答標(biāo)簽。

4. Then transfer to 500 ml plastic reagent bottle and label.

氫氧化鉀少量的此溶液可以存放在玻璃瓶，但是不能用玻璃塞（一般是用木塞，膠塞），因?yàn)槠胀úＡУ慕M成中含有較多的二氧化硅，它們會(huì)發(fā)生反應(yīng)，其中反應(yīng)物硅酸鈉具有粘稠性，會(huì)使塞子黏住導(dǎo)致開(kāi)不了。儲(chǔ)存時(shí)應(yīng)保持包裝容器的完整、密封性；不得與易燃物和酸類共貯混運(yùn)；要注意防潮、防雨；失火時(shí)，可用水、砂土和各種滅火器撲救，但消防人員應(yīng)注意水中溶入燒堿后的腐蝕性；可采用鐵桶或其他密閉容器包裝，包裝容器應(yīng)符合有關(guān)規(guī)定，桶蓋應(yīng)密封；

First of all, a small amount of potassium hydroxide solution can be stored in a glass bottle, but glass plug (usually wooden plug or rubber plug) can not be used. Because the composition of ordinary glass contains more silica, they will react, and the reactant sodium silicate has viscosity, which will make the plug stick and cause it to fail to open. During storage, the packaging container shall be kept intact and sealed; it shall not be stored and transported together with inflammables and acids; attention shall be paid to moisture-proof and rain proof; in case of fire, water, sand and various fire extinguishers can be used to put out the fire, but fire fighters shall pay attention to the corrosiveness of water dissolved in caustic soda; iron drums or other closed containers can be used for packaging, and the packaging containers shall comply with relevant regulations, and the barrel cover shall be sealed;

以上就是氫氧化鉀的相關(guān)信息，想了解更多可以關(guān)注金昊化工：http://m.fahao168.com，小編在這里等著大家哦！

The above is the relevant information of potassium hydroxide. If you want to know more, you can pay attention to Jinhao Chemical Co., Ltd http://m.fahao168.com Xiaobian is waiting for you here!