Viscose is both a semi-synthetic fabric, formerly called viscose rayon, or rayon and a solution of cellulose xanthate. The latter is produced by treating dissolving pulp with aqueous sodium hydroxide and carbon disulfide which is used to spin the viscose rayon fiber. Byproducts of the production process include sodium thiocarbonate, sodium carbonate, and sodium sulfide. Viscose rayon fiber is a soft fiber commonly used in dresses, linings, shirts, shorts, coats, jackets, and other outerwear. It is also used in industrial yarns (tyre cord), upholstery and carpets, and in the casting of Cellophane.