很多人認為氫氧化鉀和燒堿是一款產品，其實不然。這兩者在有些地方是一樣的，都具有很強的堿性。這些領域不要混淆，下面就來簡單的講解下內容。

　　Many people think that potassium hydroxide and caustic soda are the same product, but they are not. They're the same in some places, they're both very basic. Not to confuse these areas, here's a quick overview.

　　燒堿的物理性質：

　　純品為無色透明晶體，相對密度2.130，熔點318.4℃，沸點1390℃。市面上的燒堿有固態燒堿和液態燒堿兩種：純固態燒堿呈白色，呈塊狀、片狀、棒狀、顆粒狀和脆性狀；純液燒堿為無色透明液體，固體燒堿吸濕性強，易溶于水，溶解時放熱，水溶液呈堿性，有油膩感；溶于乙醇和甘油；不溶于丙酮和乙醚。腐蝕性強，對纖維、皮膚、玻璃、陶瓷等有腐蝕作用。與金屬鋁和鋅、非金屬硼和硅反應放出氫氣；與氯、溴、碘等鹵素發生歧化反應；它與酸中和，生成鹽和水。

　　Physical properties of caustic soda:

　　Pure product is colorless transparent crystal, relative density 2.130, melting point 318.4℃, boiling point 1390℃. The caustic soda on the market has solid caustic soda and liquid caustic soda two kinds: pure solid caustic soda white, block, flake, rod, granular and brittle character; Pure liquid caustic soda is colorless transparent liquid, solid caustic soda hygroscopicity is strong, soluble in water, heat release when dissolved, aqueous solution is alkaline, greasy; Soluble in ethanol and glycerin; Insoluble in acetone and ether. It is highly corrosive to fiber, skin, glass, ceramics, etc. Hydrogen is produced by reaction with aluminum and zinc, boron and silicon. Disproportionation reaction with chlorine, bromine, iodine and other halogens; It neutralizes with acids to form salts and water.

　　氫氧化鉀的物理性質：

　　白色斜方晶體，工業品為白色或淺灰色塊狀或棒狀，相對密度2.044（20℃），熔點360.4℃，沸點1320-1324℃。易溶于水，溶解時放出大量溶解熱，吸水性強，能吸水溶解在空氣中，吸收二氧化碳逐漸變成碳酸鉀。溶于乙醇，微溶于乙醚，強堿性，有腐蝕性，性質與燒堿相似。

　　因此，氫氧化鉀和燒堿在某些性質上相似，應用領域大致相同。它們不能用于各自的行業。因此，用戶在購買時應根據產品本身的特點來判斷是否符合自己的要求。

　　Physical properties of potassium hydroxide:

　　White rhexagon crystal, industrial products are white or light gray block or rod, relative density 2.044 (20℃), melting point 360.4℃, boiling point 1320-1324℃. Soluble in water, release a large amount of solution heat when dissolving, strong water absorption, can absorb water and dissolve in the air, absorb carbon dioxide gradually into potassium carbonate. Soluble in ethanol, slightly soluble in ether, strong alkaline, corrosive, similar to caustic soda properties.

　　Therefore, potassium hydroxide and caustic soda are similar in some properties and have roughly the same application fields. They cannot be used in their respective industries. Therefore, users should judge whether the product meets their requirements according to its own characteristics when purchasing.

　　在分析化學中，燒堿和氫氧化鉀經常互換使用。但是，在某些應用中，兩者不能互換使用，例如氫氣發生器，并指定氫氧化鉀。對于醫用堿石灰，指定燒堿。燒堿的吸濕性比氫氧化鉀強，所以氫氧化鉀常用于化學分析。同樣，燒堿在用作干燥劑時也應使用。比如你說的藥用堿石灰，是指定燒堿的，但是兩個燒堿的比較便宜，需要更換燒堿。

　　In analytical chemistry, caustic soda and potassium hydroxide are often used interchangeably. However, in some applications the two cannot be used interchangeably, such as hydrogen generators and specifying potassium hydroxide. For medical alkali lime, caustic soda is specified. Caustic soda is more hygroscopic than potassium hydroxide, so potassium hydroxide is often used in chemical analysis. Similarly, caustic soda should also be used as a desiccant. For example, the medicinal alkali lime you say is designated caustic soda, but the price of two caustic soda is relatively cheap, and caustic soda needs to be replaced.

　　氫氧化鉀和燒堿都具有強腐蝕性，不管是使用還是保存的時候都要小心翼翼的，遵守正確的操作守則，更多內容就來這里m.wenping365.com咨詢吧！

　　Potassium hydroxide and caustic soda are highly corrosive, whether it is the use or preservation of time to be careful, abide by the correct code of operation, more content to come here m.wenping365.com consultation!