Color
Color is measured spectrophotometrically and reported in Hazen units. Indopol® polybutenes are essentially colorless and water white and exhibit substantial color stability upon prolonged exposure to uv light and moderate heat. They are much more color stable than mineral oils of equivalent Hazen color. Nevertheless, color deterioration can occur via oxidation by atmospheric oxygen under prolonged heating, especially for the lower molecular weight grades. Therefore extended storage of bulk quantities may require precautions such as blanketing with inert gas such as nitrogen. It is also possible to add a small percentage of anti-oxidant such as di-tertiary butyl p-cresol or BHT (butylated hydroxy toluene).
For more details on handling and storage of Indopol polybutene, please contact us by e-mail.