Sodium Stearyl Fumarate (SSF) is a widely used pharmaceutical excipient, primarily functioning as a lubricant in solid dosage formulations. Here are its key applications:
1. Pharmaceutical Applications
A. Tablet Manufacturing
- Lubrication: Reduces friction between powder and die walls during compression, preventing sticking and improving tablet ejection.
- Flow Enhancer: Improves powder flowability for uniform filling of tablet dies.
- Anti-adherent: Minimizes adhesion of granules to punch faces.
B. Capsule Formulations
- Used in hard gelatin capsules to ensure smooth filling and prevent powder clumping.
C. Compatibility
- Suitable for both immediate-release and controlled-release formulations.
- Less hydrophobic than magnesium stearate, making it preferable for formulations where drug dissolution is critical.
2. Other Industrial Uses
- Food Industry: Rarely used as an anti-caking agent (subject to regional regulations).
- Cosmetics: Occasionally added to powders or pressed products (e.g., eyeshadows, compacts) for smooth application.