Sodium Stearyl Fumarate (Pruv)
CAS Number: 4070-80-8
Sodium Stearyl Fumarate (Pruv) is a highly effective tablet lubricant that is notably less sensitive to over-lubrication than magnesium stearate, making it ideal for moisture-sensitive and extended mixing conditions. It is particularly valuable in formulations with APIs susceptible to hydrolysis, as it does not generate stearic acid or magnesium ions.
Technical Specifications
| assay (%) | 99.0–101.5 |
| appearance | White to off-white fine powder |
| heavy metals (ppm) | ≤10 |
| loss on drying (%) | ≤0.25 |
| pH (1% suspension) | 8.3–9.3 |
Applications
- Tablet lubricant for sensitive formulations
- Moisture-sensitive API tablet lubricant
- Extended mixing lubricant
- Capsule fill lubricant
- Nutraceutical tablet lubricant
Key Features
- Insensitive to over-lubrication
- No magnesium ions—safe for sensitive APIs
- Low moisture content
- USP/NF, EP compliant
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CAS Number
4070-80-8
Category
Pharmaceutical ExcipientsAvailability
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