Sodium Tartrate
Pharmaceutical Materials 2025-03-02
CAS Number: 868-18-8
Molecular Formula: C4H4Na2O6
Molecular Weight: 194.05 g/mol
Appearance: White crystalline solid or colorless crystals
Usage: It is used as a pH adjuster, antioxidant, and buffering agent in various industries.
| Category | Details |
|---|---|
| Chemical Name | Sodium Tartrate |
| Also Known As | Rochelle Salt, Sodium Bitartrate |
| CAS Number | 1344-64-1 (anhydrous), 5787-57-9 (dihydrate), 6100-20-3 (decahydrate) |
| Molecular Formula | Anhydrous: Na2C4H4O6 Dihydrate: Na2C4H4O6·2H2O Decahydrate: Na2C4H4O6·10H2O |
| Molecular Weight | Anhydrous: 170.07 g/mol Dihydrate: 202.14 g/mol Decahydrate: 372.20 g/mol |
| Appearance | Anhydrous: White crystalline powder Dihydrate: Colorless crystals or white crystalline powder Decahydrate: Colorless to white crystalline powder |
| Solubility | Soluble in water; insoluble in alcohol |
| Density | Anhydrous: 1.79 g/cm³ Dihydrate: 1.53 g/cm³ Decahydrate: 1.43 g/cm³ |
| Melting Point | Anhydrous: 890°C (decomposes) Dihydrate: 75°C (loses water of crystallization) Decahydrate: 73-75°C (loses water of crystallization) |
| pH | Aqueous solution is alkaline |
| Applications | – Used as a buffering agent and stabilizer in foods, pharmaceuticals, and cosmetics – Employed in the manufacture of baking powder, enamels, and glass – Utilized in the purification of sodium chloride and calcium carbonate – Acts as a complexing agent for metal ions in analytical chemistry |
| Safety | Generally recognized as safe (GRAS) by the FDA for use in food; however, consult a healthcare professional before use, especially if pregnant or breastfeeding |
| Storage Conditions | Store in a cool, dry place, away from heat, moisture, and incompatible materials |
Sodium Tartrate: A Versatile Chemical Compound
Overview
Sodium tartrate, also known as sodium bitartrate, is an inorganic salt derived from tartaric acid. It exists in both anhydrous and hydrated forms, with the hydrated form being more commonly used. This chemical compound has a variety of applications across different industries.
Chemical Properties
Sodium tartrate has a white crystalline appearance and is highly soluble in water. It is relatively stable under normal conditions but can decompose at high temperatures. The anhydrous form has a lower melting point than the hydrated form.
Applications
Food Industry: Sodium tartrate is used as a food additive to control acidity, improve texture, and prevent crystallization in confectionery products. It is also used in the production of baking powder and as a stabilizer in beverages.
Pharmaceutical Industry: It serves as an excipient in tablet formulations and helps to improve the dissolution rate of active ingredients.
Industrial Applications: Sodium tartrate is used in the textile industry for dyeing and printing processes, and in the chemical industry as a raw material for the production of other chemicals.
Conclusion
Sodium tartrate is a versatile chemical compound with numerous applications across different industries. Its unique properties make it an essential ingredient in a wide range of products and processes.
