UNSPSC 51171501: Calcium carbonate

This classification denotes a nutritional supplement with the molecular formula CO3.Ca, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier H0G9379FGK, chemically known as carbonic acid, calcium salt (1:1) but generally known as calcium carbonate, which bears US NIH Compound Identifier 10112. European Medicines Agency schedules Calcium carbonate in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB13166MIG.

World Health Organization schedules calcium carbonate in its Anatomical Therapeutic Chemical (ATC) Classification. As of Q4 2014, CALCIUM CARBONATE remains the US FDA Preferred Term for this commodity. Calcium carbonate bears US NLM identifiers UMLS ID C0006681 and NCI Concept Code C332. SMILES: C(=O)([O-])[O-].[Ca+2].

UNSPSC 51171501 Calcium carbonate is a Commodity code that in recent state and local procurement activity actually encompasses laboratory and pharmaceutical testing services, generic multi-source pharmaceuticals and over-the-counter products, and direct-to-manufacturer prescription fulfillment programs—a significant scope mismatch between the code's nominal definition and what is being solicited under it. The issuing bodies include county criminal justice agencies, state health and human services departments, and multi-state cooperative purchasing alliances; the code appears to be used inconsistently or incorrectly across these jurisdictions rather than for the chemical product its name suggests.

Recent activity centers on Texas and Minnesota. Collin County Community Supervision and Corrections Department posted an RFP (2026-327) due July 23, 2026, for offender specimen collection and drug testing services with an estimated contract value of $600,000 and a two-year term with three optional one-year renewals; the scope includes staffing collection sites in Plano and McKinney, immunoassay screening with LC/MS/MS or GC/MS confirmation, and electronic result reporting, with annual demand of approximately 25,031 tests at per-test pricing. The Texas Health and Human Services Commission issued a Request for Information (RFI HHS0017013) in late March 2026 to gather market intelligence on direct-to-manufacturer prescription programs for self-insured employee plans. The Minnesota Multistate Cooperative Purchasing Alliance (MMCAP), administered by the Minnesota Department of Administration's Office of State Procurement, posted an RFP (S1070000015802) due March 26, 2026, to establish multi-year contracts for generic pharmaceuticals and OTC products distributed through authorized wholesalers including AmerisourceBergen Drug Corporation, Cardinal Health, and Morris & Dickson Co., LLC, with contract effectiveness July 1, 2026. The code shows little activity aligned with its stated commodity definition; vendors responding to these opportunities should verify the actual scope requirement at the issuing body before committing proposal resources.