Contains

Selenium, Sulfur

May React With

Copper, Lead, Silver See our Bullseye Reactive Potential charts for more information

Cold Characteristics

Variations from orange-red to dark red. “Catspaw" windows of lighter coloration typical of single-rolled sheets.

Working Notes

A cadmium/selenium glass. Generally fires deeper (more red) than cold sheet. “Catspaw" effect disappears on firing. This style is not suitable for kilncasting because it can opalize and/or become incompatible when held at high temperatures for an extended period. It may also opalize and/or become incompatible in instances where processes exceed the parameters of the test for compatibility. Testing recommended when heatwork exceeds these