Ceresin wax

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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

[2]

Solubility

Soluble in the same solvents as paraffin wax.

References

  1. Bennett, H., Commercial Waxes, Second edition, p. 108
  2. Bennett, H., Commercial Waxes, Second edition, p. 108