Appearance (Color)Pale yellow to yellow to dark red to dark brown to brown to black
FormCrystals or powder or crystalline powder or fused solid or clear liquid or viscous liquid as melt
Refractive Index1.5985-1.6015 @ 20?C
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.