UNSPSC 12163600: Corrosion inhibitors

Corrosion inhibitor is a chemical compound that, when added to a liquid or gas, decreases the corrosion rate of a material, typically a metal or an alloy. Two types Water Based Inhibitor and Oil based Inhibitor.

UNSPSC 12163600 Corrosion inhibitors, a Class code, encompasses chemical products that state and local water and wastewater utilities procure to control corrosion, hydrogen sulfide, and odor in potable water systems and collection infrastructure. Recent solicitations show state and local governments buying polymer blends for wastewater treatment, magnesium hydroxide slurry for hydrogen sulfide and corrosion control in sewer systems, liquid ortho/polyphosphate corrosion inhibitors for potable water distribution, and sodium bisulfite solution for chlorine reduction in treated wastewater effluent. Issuers include municipal water and wastewater departments, county utilities divisions, special-purpose taxing districts, and regional water authorities across multiple states. The Central Florida Tourism Oversight District, City of Tallahassee, Volusia County Water Resources & Utilities, and City of Austin have posted multiple corrosion-control and wastewater-treatment chemical solicitations in the past six months, indicating sustained procurement activity across water system categories.

Recent activity concentrates in Florida, Texas, and Georgia. The City of Tallahassee (Leon County, Florida) posted IFB-067-26-CPW on May 1, 2026, seeking magnesium hydroxide slurry for a five-year initial term with two optional renewals, bids due June 16, 2026; Volusia County Water Resources & Utilities posted ITB #26-B-60LS on April 14, 2026, for ortho/polyphosphate corrosion inhibitor supply to six water treatment facilities across a three-year term with two optional one-year renewals. The City of Austin issued two separate sodium bisulfite solicitations—IFB 2200 BYS1051 posted February 16, 2026 (bids due March 12, 2026) and IFB 2200 BYS1051 REBID posted May 11, 2026 (bids due June 9, 2026)—for delivery to wastewater treatment plants, with 5 percent local-business evaluation discounts available on the May solicitation. The Central Florida Tourism Oversight District posted ITB #C007056 on June 12, 2026, seeking polymer blends for wastewater sludge dewatering, due June 30, 2026. Multi-year terms predominate, with NSF and ANSI/AWWA certifications required across most opportunities; local vendor preferences and set-asides appear in individual jurisdiction policies rather than as uniform federal restrictions.