Overview
Sodium taurocholate is the sodium salt of taurocholic acid, a conjugated bile acid naturally occurring in mammalian bile. It plays critical roles in fat emulsification and absorption in biological systems. Industrially, it serves as a biosurfactant and is widely utilized in pharmaceutical formulations and research applications. As a derivative of cholic acid conjugated with taurine, it exhibits amphipathic properties, making it effective for solubilizing lipids and hydrophobic compounds. Its synthetic and purified forms are standardized for consistent performance in commercial and laboratory settings.
Physical and Chemical Properties
Sodium taurocholate is a hygroscopic crystalline powder with a bitter taste. It demonstrates excellent solubility in polar solvents like water and ethanol, forming micelles at critical concentrations. The compound is stable under normal storage conditions but may degrade upon prolonged exposure to heat or humidity. Its molecular structure combines a steroid nucleus with a polar taurine moiety, enabling both hydrophobic and hydrophilic interactions. This dual nature underpins its emulsifying capabilities, with a typical critical micelle concentration (CMC) of 3-10 mM in aqueous solutions.
Main Applications
In pharmaceuticals, sodium taurocholate is employed as an excipient to enhance drug solubility, particularly for oral formulations targeting intestinal absorption. It's a key component in simulated intestinal fluids for dissolution testing per pharmacopeial standards (e.g., USP). The compound finds extensive use in biochemical research, especially in membrane protein studies and lipid metabolism investigations. Food industries utilize it as a natural emulsifier, while diagnostic manufacturers incorporate it in bile acid assay kits. Emerging applications include nanoparticle drug delivery systems.
Safety and Storage
While generally considered low-risk, sodium taurocholate requires standard laboratory precautions. Use personal protective equipment (PPE) including gloves and safety goggles when handling. Avoid generating dust aerosols that could cause respiratory irritation. Proper storage involves airtight containers with desiccants in refrigerated conditions (2-8°C). Shelf life typically exceeds 3 years when stored correctly. Monitor for discoloration or clumping as indicators of degradation. Dispose of waste according to local regulations for organic compounds.
B2B Procurement Guide
When sourcing sodium taurocholate, prioritize suppliers with GMP certification for pharmaceutical applications. Technical specifications should clearly state purity (≥95% for most uses, ≥98% for critical applications), residual solvent levels, and microbiological limits where applicable. Bulk purchases (kilograms) typically offer 20-30% cost savings compared to laboratory-scale quantities. Request batch-specific certificates of analysis (COA) and ensure SDS documentation accompanies shipments. For international procurement, verify compliance with regional regulations (e.g., REACH, FDA).
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