一水檸檬酸和無水檸檬酸在應(yīng)用領(lǐng)域、化學(xué)性質(zhì)和物理性質(zhì)上都有區(qū)別，一水檸檬酸主要應(yīng)用于食品、飲料、化工、化妝行業(yè)，遇高溫后不穩(wěn)定，而無水檸檬酸主要應(yīng)用于化學(xué)藥品制造，有風(fēng)化性和潮解性，兩者的密度、熔點(diǎn)也不同。下面氫氧化鉀廠家為您講講一水檸檬酸和無水檸檬酸的區(qū)別。

Citric acid monohydrate and anhydrous citric acid have differences in application fields, chemical properties, and physical properties. Citric acid monohydrate is mainly used in the food, beverage, chemical, and cosmetics industries and is unstable when exposed to high temperatures, while anhydrous citric acid is mainly used in the manufacturing of chemical drugs and has weathering and deliquescence properties. The density and melting point of the two are also different. Below, the potassium hydroxide manufacturer will explain the difference between citric acid monohydrate and anhydrous citric acid.

1、應(yīng)用領(lǐng)域

1. Application field

一水檸檬酸主要應(yīng)用于食品、飲料行業(yè)，可以作為酸味劑、調(diào)味劑和防腐劑、保鮮劑使用，還可以在化工、化妝行業(yè)中作為抗氧化劑、增塑劑、洗滌劑使用，無水檸檬酸也可以應(yīng)用于食品、飲料行業(yè)，但使用多的部門是化學(xué)藥品制造。

Citric acid monohydrate is mainly used in the food and beverage industry as an acid flavoring agent, seasoning agent, preservative, and preservative. It can also be used as an antioxidant, plasticizer, and detergent in the chemical and cosmetic industries. Anhydrous citric acid can also be used in the food and beverage industry, but the most commonly used sector is chemical drug manufacturing.

2、化學(xué)性質(zhì)

2. Chemical properties

一水檸檬酸遇明火、高熱或者與氧化劑接觸的時(shí)候有引燃爆炸的危險(xiǎn)，遇高溫后不穩(wěn)定，而無水檸檬酸在干燥的環(huán)境中具有風(fēng)化性，潮濕的環(huán)境中具有潮解性，達(dá)到175°C以上時(shí)會(huì)放出水及二氧化碳，化學(xué)性質(zhì)穩(wěn)定性較差。

Citric acid monohydrate poses a risk of ignition and explosion when exposed to open flames, high heat, or oxidants. It is unstable when exposed to high temperatures, while anhydrous citric acid has weathering properties in dry environments and deliquescence in humid environments. When it reaches above 175 ° C, it releases water and carbon dioxide, resulting in poor chemical stability.

3、物理性質(zhì)

3. Physical properties

一水檸檬酸的相對密度為1.542，熔點(diǎn)為153°C，折射率為1.493～1.509，溶液結(jié)晶臨界溫度為36.6°C，無水檸檬酸的密度為1.54，熔點(diǎn)為135～152°C，閃點(diǎn)為173.9，水溶性為1630g/L，兩者的物理性質(zhì)差異明顯，使用時(shí)要注意區(qū)分。

The relative density of citric acid monohydrate is 1.542, the melting point is 153 ° C, the refractive index is 1.493~1.509, the critical temperature for solution crystallization is 36.6 ° C, the density of anhydrous citric acid is 1.54, the melting point is 135~152 ° C, the flash point is 173.9, and the water solubility is 1630g/L. The physical properties of the two are significantly different, and attention should be paid to distinguishing them when using.

一水檸檬酸與無水檸檬酸之間沒有大的區(qū)別，只是一水檸檬酸含有結(jié)晶水，溶解時(shí)與普通水是一樣的。

There is no big difference between monohydrate citric acid and anhydrous citric acid, but monohydrate citric acid contains water of crystallization, which is the same as ordinary water when dissolved.

互轉(zhuǎn)化：檸檬酸一水合物加熱153（“脫水”），溶液結(jié)晶臨界溫度36.6（“無水檸檬酸”），高于36.6（“無水檸檬酸”），低于36.6（“檸檬酸一水合物”）。

Mutual conversion: Heat the citric acid monohydrate to 153 ("dehydration"), and the critical crystallization temperature of the solution is 36.6 ("anhydrous citric acid"), above 36.6 ("anhydrous citric acid"), and below 36.6 ("citric acid monohydrate").

正常情況下，添加的材料含有大量的水，而且比例通常很小，因此添加這兩種檸檬酸對水的含量的影響微乎其微，因此可以使用。更多相關(guān)事項(xiàng)就來我們網(wǎng)站http://www.hkjzshop.com咨詢！

Under normal circumstances, the added material contains a large amount of water and the proportion is usually small, so the effect of adding these two types of citric acid on the water content is minimal, so it can be used. For more related matters, come to our website http://www.hkjzshop.com consulting service