Sodium tetrasulfide

• CAT Number: M061822
• CAS Number: 12034-39-8
• Molecular Formula: Na2S4
• Molecular Weight: 174.22
• Purity: ≥95%
• Synonyms: Disodium tetrasulphide; EINECS 234-805-5.
• Storage: -20°C
• InChI: InChI=1S/2Na.H2S4/c;;1-3-4-2/h;;1-2H/q2*+1;/p-2
• InChIKey: ZLCCLBKPLLUIJC-UHFFFAOYSA-L
• SMILES: [Na+].[Na+].[S-]SS[S-]

Sodium tetrasulfide (CAT: M061822) is an inorganic polysulfide compound typically appearing as yellow to orange solid pellets or flakes with a characteristic sulfur odor. Highly soluble in water, it forms strongly alkaline solutions containing polysulfide ions. Sodium tetrasulfide is widely used in leather processing, chemical manufacturing, and as a sulfur source in polymer vulcanization, dyes, and pesticides. In synthetic chemistry, it serves as a reagent for introducing sulfur chains into organic molecules.