Color, yellow to black. Lustre, resinous, brilliant, and sometimes submetallic. Heated in an ignition tube sometimes decrepitates. Before the Bp. on Ch. infusible. Before the Bp. on Ch. with Na_{2}CO_{3} easily reduced. With Co(NO_{3})_{2} gives the characteristic reaction. It frequently contains small quantities of Cd, Hg, Sn, Pb, Au, Ag, etc. I TABLE OF COLORS OF COATINGS ON CHARCOAL -------------------------------------------------- Element | Color Hot | Color Cold | ---------|------------------------|---------------| Antimony | (Rather volatile) | White | | | | Arsenic | (Very volatile) | White | | | | Bismuth | Orange-Yellow | Lemon-Yellow | | | | Cadmium | Brownish Yellow | Reddish Brown | | | | Lead | Lemon-Yellow (volatile)| Lemon-Yellow | | | | Silver | Dark Red | Dark Red | | | | Tin | Faint Yellow | White | | | | Zinc | Yellow | White | -------------------------------------------------- II TABLE OF FLAME COLORATIONS ------------------------------------ Red | Yellow | Green | -------------|----------|-----------| Calcium | Sodium | Barium | | | | Lithium | | Boron | | | | Strontium | | Iodine | -------------|----------|-----------| Bluish Green | Blue | Violet | -------------|----------|-----------| Bromine | Chlorine | Potassium | | | | Copper | | | | | | Phosphorus | | | ------------------------------------ III TABLE OF COLORS OF BORAX BEADS IN OXIDIZING FLAME