UNSPSC 51172315: Sodium thiosulfate or thiosulfate or thiosulphate

This classification denotes a protective agent with the molecular formula 2Na.O3S2.5H2O, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier HX1032V43M, chemically known as thiosulfuric acid (h2s2o3), disodium salt but generally known as sodium thiosulfate, which bears US NIH Compound Identifier 24477. European Medicines Agency schedules Sodium thiosulfate in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB15332MIG. SMILES: [O-]S(=O)(=S)[O-].[NA+].[NA+].

UNSPSC 51172315 Sodium thiosulfate or thiosulfate or thiosulphate is a Commodity code that nominally covers chemical reagents used in laboratory and industrial applications. However, state and local procurement activity under this code shows minimal recent relevance to the commodity's core definition. The three recent opportunities posted under this code—offender drug testing services, direct-to-manufacturer prescription programs, and generic pharmaceutical distribution—do not require sodium thiosulfate as a primary material input and appear to be miscategorized under the code. The mismatch between the code's chemical-reagent scope and the pharmaceutical and testing-services focus of recent solicitations suggests that this code sees little or no genuine state and local activity aligned with its intended product category.

The source provides no evidence of state and local governments procuring sodium thiosulfate itself, nor do the recent opportunities name the chemical among required materials or supplies. Collin County Community Supervision and Corrections Department posted an RFP on July 9, 2026 for offender specimen collection and drug testing services (due July 23, 2026) estimated at $600,000 over two years, but the scope centers on staffing, lab certification, and testing methodologies rather than chemical reagents. The Texas Health and Human Services Commission issued an RFI on April 3, 2026 regarding direct-to-manufacturer prescription programs, and the Minnesota Multistate Cooperative Purchasing Alliance posted an RFP on January 20, 2026 for generic pharmaceuticals and OTC products (due March 26, 2026), with awards effective July 1, 2026. None of these solicitations align with procurement of sodium thiosulfate or related chemical reagents. The code shows no active or recent state and local opportunity stream that matches its commodity definition.