UNSPSC 51191917: Ferrous sulfate

This classification denotes a nutritional supplement with the molecular formula FeO4S; a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 2IDP3X9OUD; chemically known as vanadium sulfate; vso4 but generally known as ferrous sulfate; which bears US National Institutes of Health Compound Identifier 1118 European Medicines Agency schedules Ferrous sulfate in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB13877MIG World Health Organization schedules ferrous sulfate in its Anatomical Therapeutic Chemical (ATC) Classification As of Q4 2014, FERROUS SULFATE remains the US FDA Preferred Term for this commodity.

Ferrous sulfate bears US NLM identifiers UMLS ID C0060282 and NCI Concept Code C29049. SMILES: S(=O)(=O)(O)O.

UNSPSC 51191917 Ferrous sulfate is a Commodity code that does not reflect the actual work state and local governments are soliciting under this code number in current markets. The single recent opportunity tagged to this code—Sourcewell RFP #061626, posted May 12, 2026 with a June 16, 2026 response deadline—solicits law enforcement equipment for a multi-jurisdictional cooperative purchasing vehicle, a scope entirely unrelated to ferrous sulfate procurement. Ferrous sulfate is a chemical compound used in water treatment, industrial processes, and agricultural applications; law enforcement equipment encompasses tactical gear, vehicles, communications systems, and related hardware. The mismatch suggests either a data-entry error in the opportunity classification or a fundamental breakdown in how this particular code is being applied by the issuing body.

Sourcewell, the State of Minnesota local government unit and service cooperative administering the RFP on behalf of participating entities including Franklin County, Grant County, Grays Harbor County, Chelan County, and Yakima County in Washington state, structured this as a cooperative purchasing agreement available to governmental agencies, K-12 school districts, higher education institutions, nonprofit organizations, tribal governments, and other public entities throughout the United States and Canada. The solicitation provides no specific budget, award value, set-aside designations, or incumbent vendor information. Absent additional recent opportunities correctly classified under this code, the available activity does not support a meaningful assessment of state and local procurement demand for ferrous sulfate itself. Vendors should verify whether opportunities tagged to this code reflect genuine ferrous sulfate demand or continue to surface misclassified procurement.