At room temperature, citric acid anhydrous powders is a colorless translucent crystals or white granules or white crystalline powder, odorless, very sour taste, slight deliquescence in moist air. Citric acid anhydrous powders can exist in the form of the anhydrate or monohydrate.When heated to 175 ° C,it will decompose to produce carbon dioxide and water, the remaining white crystals.Citric acid is a strong organic acid.
Function:
1. Citric acid is mainly used as an acid, a solvent, buffer, antioxidant, deodorant, flavor enhancer, gelling agent, toner and so on.
2. Citric acid also inhibits bacteria, protect color, improve flavor, and promote the transformation of sucrose and so on.
3. Citric acid also has a chelating effect that can remove certain harmful metals.
4. Citric acid can prevent the oxidative effect caused by enzymatic catalysis and metal catalysis, thereby preventing the discoloration of frozen fruit.
Application:
1. Food industry: mild and refreshing acidity citric acid anhydrous powders is widely used for a variety of beverages, soft drinks, wine, candy, snacks, biscuits, canned fruit juices, dairy products and other food products.
2. Chemicals and textiles: use citric acid or salts thereof as builders, can improve the performance of the washing product, can rapidly precipitate the metal ions, to prevent readhesion of pollutants on the fabric maintain washed necessary alkaline; dirt and ash dispersion and suspension; improve the performance of the surfactant.
3. Environmental protection: citric acid - sodium citrate buffer for flue gas desulfurization.
4. Livestock production:citric acid in piglet feed, early weaning, feed utilization increased 5% to 10%, increase the amount of litter pigs.
5. Cosmetics: Citric acid is a kind of acid, the main role is to accelerate the horny update.
6. Sterilization: citric acid and 80 ° C temperature combined effects kill bacterial spores, and can effectively kill bacterial spores of the pollution in the hemodialysis machine line.
Appearance | Colorless or white crystal |
Identification | Pass the test |
Clarity and Color of Solution | 20% water solution clarity |
Barium | Passed the test |
Calcium | 200ppm max |
Heavy metals | 10ppm max |
Iron | 50 ppm max |
Chloride | 50 ppm max |
Sulphates | 150 ppm max |
Oxalate | 350 ppm max |
Readily Carbonisable substances | Pass the test |
Sulphated ash | 0.05% max |
Bacteria endotoxin | 0.5IU/mg max |
Arsenic | 1 ppm max |
Lead | 1 ppm max |
Mercury | 1 ppm max |
Foreign matters | Pass the test |
Aluminum | 0.2 ppm max |
Water | 0.5% max |
Assay | 99.5-101.0% |
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