Carbon disulfide is an important impurity in benzene, in many cases (6) accounting for one-half the total sulfur content found. For samples containing 0.02% or more carbon disulfide, infrared spectrophotometry is a convenient method of analysis and has been applied to both carbon tetrachloride (10, 14) and benzene (8, 13) solutions.
Robert G. White, "Determination of Carbon Disulfide in Benzene by Ultraviolet Spectrophotometry," Appl. Spectrosc. 18, 112-113 (1964)