UNSPSC 12352319: Calcium hydroxide

UNSPSC 12352319 Calcium hydroxide is a Commodity code that in practice covers disinfectant and water treatment chemicals — particularly sodium hypochlorite (bleach), calcium hydroxide derivatives, sodium hydroxide (caustic soda), aluminum chlorohydrate, citric acid, hydrofluosilicic acid (fluoride), and related treatment polymers used in municipal water and wastewater systems. State and local governments procure these chemicals for ongoing disinfection, pH adjustment, coagulation, and sanitization across drinking water plants, wastewater treatment facilities, and general county facility maintenance. Counties and cities represent the primary issuing bodies, though the code does not show school districts or transit authorities in recent activity. Escambia County, Florida appears twice in recent solicitations, signaling repeat municipal demand. The work ranges from routine supply contracting for bulk chemical delivery to specialized procurements for on-site chemical generation systems that produce disinfectants on demand.

Recent activity concentrates in Florida. The City of Flowery Branch issued an Invitation for Bid (26-007) on March 4, 2026 for a five-year supply contract covering seven water and wastewater treatment chemicals — ACH, sodium hypochlorite for drinking water and wastewater, caustic soda, citric acid, fluoride, and polymer — with bids due April 21, 2026 and a mandatory pre-bid meeting on March 24, 2026 at City Hall; the City specified NSF/ANSI/CAN 60 certification for all drinking water chemicals, 5–7 day delivery windows, and bonding requirements if the contract exceeded $250,000. Escambia County issued two separate procurements: a competitive RFP (PD2526083) posted June 30, 2026 for purchase, installation, and maintenance of a hypochlorous acid generator with proposals due August 11, 2026, and an earlier sole source procurement (SSC2526004) in February 2026 for an EPA-approved anolyte generator capable of producing 600 gallons per 24 hours at 200–500 PPM with 24/7 maintenance, one-year warranty, and cloud-connected compliance reporting.