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Lead Stearate and Dibasic Lead Stearate
Description
Lead Stearate Pb(C17 H35 COO)2 and Dibasic Lead
Stearate, 2PbO, Pb (C17 H35COO)2 are basic lead soap of commercial stearic
acid. These are versatile combined lubricants and heat stabilisers for PVC.
Typical Properties
 |
|
Lead Stearate |
Dibasic Lead Stearate |
| Appearance |
White Powder |
White Powder |
| Specific gravity |
1.40 - 0.02 |
1.90 - 0.05 |
| Residue on 63 micron IS sieve (% max) |
- |
0.60 |
| Moisture (% max) |
0.10 |
0.50 |
| Lead Oxide Equivalent (% PbO) |
30 - 34 |
52 - 56 |
| Free fatty acid (% max) |
0.60 |
0.50 |
| Bulk density, tapped (g/ml) |
0.6 - 0.7 |
0.40 - 0.50 |
|
|
Applications
Lead Sterate and Dibasic Lead Stearate have wide
application as a lubricant for plasticized PVC compounds, particularly cable
covering. For rigid PVC applications, it is necessary to use a well-balanced
lubricant system.
