Trinatrium Citrate Dihydrate
Product Name | Trinatrium Citrate Dihydrate |
---|---|
SKU | Trinatrium Citrate Dihydrate |
EC no | 200-675-3 |
CAS no | 6132-04-3 |
Formula | C6H9Na3O9 |
Synonyms | Trisodium citrate dihydrate, Citric acid trisodium salt dihydrate, Sodium citrate tribasic dihydrate, Trinatrium Citrat 2-hydrat |
Trisodium Citrate Dihydrate (also called sodium citrate dihydrate) is a chemical compound consisting of the sodium salts of citric acid.
Chemical Formula and Structure
Trisodium citrate dihydrate has the chemical formula C6H9Na3O9·2H2O, where:
- C6H9 represents the carbon and hydrogen in the citrate portion of the molecule.
- Na3 are the three sodium ions, neutralizing the three negative charges on the citrate.
- O9 refers to the nine oxygen atoms present in the citrate (from citric acid).
- 2H2O indicates two molecules of water (the dihydrate form) bound to the salt.
Manufacturing
Trisodium citrate dihydrate is typically produced by fully neutralizing citric acid (C6H8O7) with sodium hydroxide (NaOH) or sodium carbonate (Na2CO3). This creates a sodium salt of citric acid. After neutralization, the compound crystallizes, and the final product is trisodium citrate dihydrate.
Taste and Alkaline Properties
- Mildly acidic taste: Trisodium citrate dihydrate has a slightly sour or saline taste, making it suitable for flavor adjustment in foods and beverages.
- Mild alkalinity: While trisodium citrate is a salt, it has a mild alkaline character, allowing it to neutralize acids. This makes it useful as a buffer to maintain stable pH levels in both food and technical applications.
Applications
Food and Beverages
- Buffer: Trisodium citrate is used to adjust and stabilize the pH in foods, preserving taste and texture.
- Sequestration: It “binds” metals like calcium and magnesium, preventing them from forming undesirable compounds. This is particularly useful in beverages such as soft drinks and juices to prevent sedimentation and crystal formation.
- Emulsification: It acts as an emulsifier in certain products, helping to mix oil and water (e.g., in dressings, sauces, and margarine).
Technical Applications
- Descaling and Cleaning: Trisodium citrate is used in various cleaning products to remove mineral deposits.
- Pharmaceuticals: It is included in certain medical and pharmaceutical formulations as a stabilizing agent, ensuring the formulations remain stable over time.
Sequestration and Buffering
- Sequestration: Trisodium citrate can “trap” metal ions such as calcium and magnesium. This is beneficial in both food production (to prevent unwanted mineral deposits) and technical applications like water treatment.
- Buffer: As a buffer, trisodium citrate helps maintain a stable pH in solutions. This is crucial in food and industrial processes where a constant pH is needed to avoid changes in taste, texture, or product quality.
Summary
Trisodium citrate dihydrate is a versatile compound with numerous applications across industries, especially in food production, medicine, and technical applications. It functions as a buffer, sequestrant, and emulsifier, helping to adjust pH, stabilize product composition, and prevent crystal formation. It is a safe and effective compound in small amounts, contributing to product quality and stability.
Trisodium citrate dihydrate can be supplied in bulk, IBC, drums, and cans.
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