HOCH2CH2SCH2CH2OH

HOCH2CH2SCH2CH2OH is an organosulfur compound that belongs to the class of thioethers. It consists of a sulfur atom bonded to two 2-hydroxyethyl groups, giving the structural formula HO-CH2-CH2-S-CH2-CH2-OH. The compound is commonly known as thiodiglycol, and its IUPAC name is bis(2-hydroxyethyl) sulfide. Its molecular formula is C4H10O2S.

Common synonyms for this compound include thiodiglycol and bis(2-hydroxyethyl) sulfide. The two hydroxyl groups render the molecule highly polar and capable of extensive hydrogen bonding, while the central sulfur atom links the two hydroxyethyl moieties.

Physically, thiodiglycol is typically a colorless to pale yellow viscous liquid at room temperature. It is miscible with water and with many polar organic solvents. It is relatively stable under normal conditions but can decompose when exposed to strong heat or oxidizing environments.

Production and applications of thiodiglycol center on its role as a versatile building block in organic synthesis. It is used as an intermediate in the manufacture of sulfide-containing polymers, surfactants, and specialty chemicals. The diol can be converted to sulfonate derivatives and other sulfur-containing functionalities, expanding its use as a chemical linker and precursor. The compound is also noted in the historical context as a hydrolysis product associated with sulfur mustard under moist conditions; this association underscores the need for careful handling and regulatory awareness.

Safety and handling: thiodiglycol can cause irritation to skin, eyes, and the respiratory tract on exposure. It should be handled with appropriate protective equipment, stored in a cool, well-ventilated area, and kept away from strong oxidizers. In case of contact, rinse with water; seek medical attention if exposure is significant.