Disodium Succinate Hexahydrate
White crystalline sodium salt of succinic acid — a versatile pH buffer, umami flavor enhancer, and sustainable chemical intermediate.
Disodium Succinate Hexahydrate (CAS 6106-21-4) is the sodium salt of succinic acid carrying six molecules of water of crystallisation. It is a white crystalline powder that is highly soluble in water, exhibits mild alkalinity (pH 7–9 in solution), and is biodegradable — particularly when sourced from fermentation-based succinic acid platforms.
Chemical Identity
| CAS Number | 6106-21-4 |
| Molecular Formula | C₄H₄Na₂O₄·6H₂O |
| Molecular Weight | ~270.14 g/mol |
| Appearance | White crystalline solid or powder |
| Solubility | Highly soluble in water; insoluble in most organic solvents |
| pH (1–5% solution) | ~7.0–9.0 (slightly alkaline) |
| Origin | Bio-based (fermentation-derived succinic acid) |
Key Functional Properties
- Buffering agent (pKa₂ ≈ 5.6 for the succinic acid system)
- Chelating/stabilising behaviour toward certain metal ions
- Mild alkalinity useful for pH adjustment in aqueous systems
- Biodegradable and bio-based when derived from fermentation routes
- Thermal stability: loses water of crystallisation on heating (~100–150 °C)
Main Applications
- Food & Beverage: pH regulator, buffering agent, and umami/savory taste enhancer in seasonings, instant soups, and seafood processing.
- Pharmaceuticals: Buffer component in formulations, IV fluids, and drug stabiliser; linked to Citric acid cycle intermediates.
- Industrial & Chemical: Buffer solutions, chelating agent in metal processing and cleaning formulations, green chemistry intermediate.
- Agriculture: Feed additive for metabolic support; component in specialty bio-based fertiliser formulations.
Handling & Storage
- Store in cool, dry conditions — product is hygroscopic.
- Avoid prolonged exposure to high temperatures (dehydration risk above ~100 °C).
- Compatible with most aqueous systems; avoid strong oxidisers.
Frequently Asked Questions
What is Disodium Succinate Hexahydrate used for?
Disodium Succinate Hexahydrate (CAS 6106-21-4) is used as a buffering and pH-regulating agent, a flavor enhancer contributing umami/savory taste in food and seasonings, a pharmaceutical excipient in formulations and IV fluids, and as a chelating agent in industrial and water treatment applications.
What is the CAS number of Disodium Succinate Hexahydrate?
The CAS number is 6106-21-4. Its molecular formula is C₄H₄Na₂O₄·6H₂O and molecular weight is approximately 270.14 g/mol.
Is Disodium Succinate Hexahydrate bio-based?
Yes. When derived from fermentation-based succinic acid platforms, it is a bio-based and biodegradable compound, making it suitable for green chemistry and sustainable manufacturing applications aligned with modern biorefinery value chains.
Where can I buy Disodium Succinate Hexahydrate in India?
ChemSus Technologies Pvt Ltd supplies high-purity Disodium Succinate Hexahydrate in India for food, pharmaceutical, and industrial applications. Contact info@chemsus.in or +91 84868 77575.