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LEAD STEARATE AND
DIBASIC LEAD STEARATE
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Description
Lead Stearate Pb(C17H35COO)2 and Dibasic Lead Stearate, 2PbO, Pb(C17H35COO)2
are basic lead soap of commercial stearic acid. These are versatile combined lubricants and heat stabilisers for PVC.
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Typical Properties
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Lead Stearate |
Dibasic Lead Stearate |
| Appearance |
White Powder |
White Powder
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| Specific gravity |
1.40 ± 0.02 |
1.90 ± 0.05
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| 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 Plasticised
PVC compounds, particularly cable covering. For rigid PVC applications, it is necessary to use a well-balanced lubricant system.
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Information
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