Tin(II) sulfide Tin(II) sulfide Tin(II) sulfide is a chemical compound of tin and sulfur. The chemical formula is SnS. Its natural occurrence concerns herzenbergite (α-SnS), a rare mineral. At elevated temperatures above 905K, SnS undergoes a second order phase transition to β-SnS (space group: cmcm, No. 63). in recent years, it has become evident that a new polymorph of SnS exist based upon the cubic crystal system, π-SnS (space group: P23, No. 198). Tin(II) sulfide can be prepared by reacting tin with sulfur, or tin(II) chloride with hydrogen sulfide. Tin(II) sulfide is a dark brown or black solid, insoluble in water, but
Wedding cord Wedding cord The traditional wedding cord, also known as the wedding lasso, is a piece of wedding paraphernalia used in some Christian Catholic wedding ceremonies. This is actually a representation of a loop of rosary beads made out of white satin or silk. During the wedding proper, this is traditionally formed into a figure-of-eight shape, and then placed around the neck areas of the bride and the groom after they have made their wedding vows, and are already kneeling on pillows for the pronouncement of a wedding prayer. This cord symbolizes lifetime unity or the everlasting union of the bride