CAS Registry Number

CAS 123-90-0 — Thiomorpholine

Thiomorpholine is a heterocyclic secondary amine with a sulfur atom in its ring, widely used as a corrosion inhibitor, vulcanization accelerator in rubber manufacturing, and an intermediate in pharmaceutical and agrochemical synthesis. It appears as a colorless to pale yellow liquid with an ammonia-like odor. CAS 123-90-0, molecular formula C4H9NS, molecular weight 103.19 g/mol, stored at ambient conditions. Hazardous—signal word *Danger*—with acute toxicity and skin/eye irritation risks; handle with proper PPE and ventilation. Molekula supplies Thiomorpholine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.