Calcium Stearate (Pharmaceutical Grade)
CAS Number: 1592-23-0
Pharmaceutical grade Calcium Stearate is a calcium salt of stearic acid used as a tablet lubricant and glidant. It provides effective lubrication at concentrations of 0.5–2% and is particularly suited for formulations where magnesium ions must be avoided. It has a less pronounced negative effect on tablet hardness and dissolution compared to magnesium stearate.
Technical Specifications
| appearance | White fine powder, slight fatty odor |
| assay (as CaO, %) | 9.0–10.5 |
| heavy metals (ppm) | ≤20 |
| loss on drying (%) | ≤4.0 |
| acid value (mg KOH/g) | ≤5.0 |
Applications
- Tablet lubricant
- Capsule fill lubricant
- Powder flow aid
- Magnesium-free lubricant for sensitive APIs
- Nutraceutical tablet lubricant
Key Features
- Magnesium-free lubricant alternative
- Less impact on tablet hardness
- Effective at 0.5–2% concentration
- USP/NF compliant
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CAS Number
1592-23-0
Category
Pharmaceutical ExcipientsAvailability
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