Carbon disulfide (CAS No. 75‑15‑0; formula CS₂) is a colorless, volatile liquid with a pungent odor. Analytical or lab grade offers ≥ 99.9% purity, low benzene, and excellent spectral quality. It boils at ≈ 46 °C, melts at −111 °C, and dissolves nonpolar solvents— used mainly as a solvent and reagent.