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Citric Acid
CAS No.: 77-92-9 EINECS: 201-069-1
Molecular Formula: C6H8O7 Molecular Weight: 192.12
Structural Formula:
Description:
Citric Acid can exist either in Citric Acid anhydrous (water-free) form or as Citric Acid monohydrate. In chemical structure, Citric Acid shares the properties of other carboxylic acids. When heated above 175 °C, Citric Acid decomposes through the loss of carbon dioxide and water.
Specification:
| CITRIC ACID ANHYDROUS BP98/USP24 | |
| DEFINITION | COMPLIES WITH THE TEST |
| CHARACTERS | A WHITE, CRYSTALLINE POWDER, COLORLESS CRYSTALS OR GRANULES |
| IDENTIFICATION | COMPLIES WITH THE TEST |
| ASSAY | 99.5%~100.5% |
| LOSS ON DRYING | ≤0.5% |
| READILY CARBONISABLE SUBSTANCES | PASS THE TEST |
| SULFATE ASH | ≤0.1% |
| IRON | ≤50PPM |
| CHLORIDE | ≤50PPM |
| OXALATE | ≤300PPM |
| SULPHATE | ≤150PPM |
| HEAVY METALS | ≤10PPM |
| ARSENIC | ≤4PPM |
| CALCIUM | ≤200PPM |
| BARIUM | PASS THE TEST |
| TRIDODECYLAMINE | ≤0.1PPM |
| CITRIC ACID MONOHYDRATE BP98/USP24 | |
| DEFINITION | COMPLIES WITH THE TEST |
| CHARACTERS | A WHITE, CRYSTALLINE POWDER, COLORLESS CRYSTALS OR GRANULES |
| IDENTIFICATION | COMPLIES WITH THE TEST |
| ASSAY | 99.5%~100.5% |
| LOSS ON DRYING | 7.5-9.0% |
| READILY CARBONISABLE SUBSTANCES | PASS THE TEST |
| SULFATE ASH | ≤0.1% |
| IRON | ≤50PPM |
| CHLORIDE | ≤50PPM |
| OXALATE | ≤300PPM |
| SULPHATE | ≤150PPM |
| HEAVY METALS | ≤10PPM |
| ARSENIC | ≤1PPM |
| CALCIUM | ≤200PPM |
| BARIUM | PASS THE TEST |
Uses：
Food additive
As a food additive, Citric Acid is used as a flavoring and preservative in food and beverages, especially soft drinks. Citric Acid is denoted by E number E330. Citrate salts of various metals are used to deliver those minerals in a biologically available form in many dietary supplements. The buffering properties of citrates are used to control pH in household cleaners and pharmaceuticals. In the United States the purity requirements for Citric Acid as a food additive is defined by the Food Chemical Codex (FCC), which is published by the United States Pharmacopoeia (USP).
Water softening
Citric Acid 's ability to chelate metals makes it useful in soaps and laundry detergents.
Others
Citric Acid is used in biotechnology and the pharmaceutical industry to passivate high-purity process piping (in lieu of using nitric acid).
Citric Acid is commonly used as a buffer to increase the solubility of brown heroin.
Citric Acid can be added to ice cream to keep fat globules separate, and can be added to recipes in place of fresh lemon juice as well.
Citric Acid is commonly employed in wine production as a substitute or improver where fruits containing little or no natural acidity are used.
Citric Acid is also used as a stop bath in photography
Citric Acid is used as one of the active ingredients in the production of anti-viral tissues.
Citric Acid is used as the main ripening agent in the first steps of making mozzarella cheese
Packing:
25kg/bag or as required
Keywords:
Citric Acid, Citric acid anhydrous, 2-Hydroxy-1, 2, 3-propanetricarboxylic acid, 2-Hydroxytricarballylic acid.