Difference between revisions of "Ceresin wax"
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Latest revision as of 05:00, 14 July 2016
Description
Ceresin originally was a purified ozokerite. For economic reasons, it was adultered with paraffin wax to reduce its cost. Today commercial ceresin contains 50 - 80% paraffin wax. Some European ceresins also contain rosin and coloring matter to approach the properties of beeswax.
Commercial ceresin varies in color from yellow to white and melts at 54 - 79ºC, depending on its purity. Its hardness, plasticity, etc, also vary with purity. The grades containing large percentages of ozokerite naturally approach ozokerite in properties[1].
Properties
| Melting Point | 54 - 79 ºC |
| Specific Gravity | 0.88 - 0.92 |
| Acid Number | 0 |
| Saponification Number | 0 - 1 |
| Iodine Number | 7 - 10 |
| Color | white, yellow |
| Refractive Index | 1.4416 - 1.4465 |
| Dielectric Constant | 2.15 - 2.33 |
| Effective A.C. Conductivity | 1 - 12 |
| Volume Resistivity | 400>900 |
Solubility
Soluble in the same solvents as paraffin wax.