Glasses of deep amber and amethyst shades are prepared with
Erachem Comilog's high
purity manganese dioxides.
Ironically, manganese dioxide has also been used for
hundreds of years to remove color from glasses. Sometimes called "glass-makers'
soap", MnO2 precipitates iron from the molten glass that would
impart a green tint.
The thermal and light stability of manganese colorants is also a benefit to those who
need both beauty and longevity in their products. In vinyl siding, where color stability
is essential, manganese based pigments are commonly used. |
