UNSPSC 51191706: Citric acid and sodium citrate combination

This classification denotes an alkalinizing agent combination drug. The first component of this drug is a carboxylic acid with the molecular formula C6H8O7.H2O, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 2968PHW8QPm, and which is called citric acid. European Medicines Agency schedules citric acid monohydrate in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB12482MIG. The term citrate is a U.S. FDA designation.

UNSPSC 51191706 Citric acid and sodium citrate combination is a Commodity code that state and local governments use to tag chemical supply contracts for water treatment and facility operations, though recent solicitations under this code show little alignment with its nominal scope. The City of Meriden, Connecticut has solicited sodium bisulfite — a distinct reducing agent — for its Water Pollution Control Facility, and MMCAP (Minnesota Multistate Cooperative Purchasing Alliance), administered by the Minnesota Department of Administration, has posted a multi-state RFP for generic pharmaceuticals and OTC products. These are not citric acid or sodium citrate compounds. The issuing bodies represent a mix of municipal water utilities and multi-state cooperative purchasing consortiums; MMCAP's scope includes state agencies and subordinate local government facilities across Minnesota and Oregon. Contractors pursuing opportunities under this code should verify that individual solicitations are actually requesting the citric acid and sodium citrate products the code nominal describes, rather than accepting the code tag at face value.

The geographic spread is concentrated in the Upper Midwest and Northeast based on recent postings. The City of Meriden's sodium bisulfite IFB closed July 29, 2026, with General Liability insurance requirements of $1,000,000 to $2,000,000 and performance bonds mandatory. MMCAP's RFP for pharmaceuticals and OTC products, due March 26, 2026, requires vendors to supply through three authorized wholesalers (AmerisourceBergen Drug Corporation, Cardinal Health, and Morris & Dickson Co., LLC) with comprehensive insurance including $5,000,000 commercial general liability per occurrence and cGMP and DSCSA compliance certification. The scope mismatch between the code's nominal definition and actual solicitations suggests this Commodity code is either misapplied by issuing bodies or represents a legacy taxonomy entry with limited current relevance to citric acid and sodium citrate procurement.