UNSPSC 51171510: Magnesium trisilicate

This classification denotes an antacid preparation, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier C2E1CI501T. European Medicines Agency schedules Magnesium trisilicate in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB14451MIG. Magnesium trisilicate generally arises in the molecular formula 2MG.O8SI3.H2O. The term 'magnesium trisilicate' is a European Pharmacopoeia designation. As of Q4 2014, MAGNESIUM TRISILICATE remains the US FDA Preferred Term for this commodity.

Magnesium trisilicate bears US NLM identifiers UMLS ID C0065533 and NCI Concept Code C66052. SMILES: [O-][SI](=O)O[SI]([O-])([O-])O[SI](=O)[O-].[MG+2].[MG+2].

UNSPSC 51171510 Magnesium trisilicate is a Commodity code with minimal recent state and local procurement activity aligned to its nominal scope. The single recent opportunity posted under this code—Collin County Community Supervision and Corrections Department RFP 2026-327 for offender specimen collection and drug testing services, due July 23, 2026—addresses drug testing infrastructure and lab analysis rather than magnesium trisilicate as a chemical input or finished product. The scope encompasses specimen collection site staffing, immunoassay screening with LC/MS/MS or GC/MS confirmation, electronic result reporting, and alternative testing methodologies including oral fluid and hair analysis, with an estimated contract value of $600,000 and a two-year initial term commencing September 1, 2026, plus three optional one-year renewal periods.

The mismatch between the code's chemical-product designation and the testing-services nature of the single recent solicitation suggests this code sees little relevant state and local buying activity at present. Collin County's RFP represents a criminal justice procurement rather than a chemical or pharmaceutical supply contract. Without additional recent opportunities tied to magnesium trisilicate acquisition across state departments, counties, municipalities, school districts, or special-purpose districts, the code does not reflect active state and local market demand in its core commodity space.