Citric acid monohydrate is a kind of citric acid that contains one crystal water, that is, one more crystal water than citric acid. Should be anhydrous copper sulfate and copper sulfate pentahydrate. So what is the difference between citric acid monohydrate and anhydrous lemon? Now let us introduce the Hundred Hundred Hundred Hundred Hundred Safety Nets!
The difference between citric acid monohydrate and anhydrous citric acid is as follows:
1. Different application areas
Citric acid monohydrate is mainly used in the food and beverage industry as an acid agent, flavoring agent, preservative and preservative. It is also used as antioxidant, plasticizer and detergent in the chemical industry, cosmetic industry and washing industry.
Anhydrous citric acid is mainly used in the food and beverage industry as an acid agent, acidity regulator, flavoring agent, preservative and preservative. Anhydrous citric acid is widely used in the national economy, and many industrial sectors require anhydrous citric acid. The sector that uses anhydrous citric acid the most is the chemical manufacturing industry, followed by papermaking, aluminum smelting, tungsten smelting, rayon, artificial cotton and soap manufacturing. In addition, a large amount of anhydrous citric acid is also used in the production of dyes, plastics, chemicals and organic intermediates, the regeneration of old rubber, the electrolysis of metal sodium and water, and inorganic materials such as borax, chromate, manganate and phosphate. Salt production. At the same time, anhydrous citric acid is one of the important raw materials for the production of polycarbonate, super absorbent polymer, zeolite, epoxy resin, sodium phosphate, sodium sulfite and a large amount of sodium salt.
2. Different chemical properties
Citric acid monohydrate may cause combustion and explosion when exposed to open flames, high temperatures or in contact with oxidants. Anhydrous citric acid is weather-resistant in dry air and deliquescent in humid air. It decomposes above 175°C to release water and carbon dioxide.
3. Different molecular weight
The molecular weight of citric acid monohydrate is 581, and the molecular weight of anhydrous citric acid is 420.
4. Different physical properties
The relative density of citric acid monohydrate is 1.542, the melting point is 153°C, the refractive index is 1.493-1.509, and the critical crystallization temperature is 36.6°C. The properties of anhydrous citric acid are density 1.54, melting point 135-152°C, flash point 173.9°C, water solubility 1630 g/L.