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 is a Class code encompassing chemical products and services that state and local water and wastewater utilities deploy to prevent corrosion and related damage in treatment plants, distribution systems, and collection infrastructure. Recent solicitations show municipalities and regional water authorities purchasing hydrogen peroxide, magnesium hydroxide slurry, sodium bisulfite, and proprietary corrosion-control formulations applied at treatment facilities, pump stations, and lift stations to manage hydrogen sulfide, odor, and corrosion in pipes and equipment. Issuing bodies span city water departments, regional water authorities, municipal wastewater systems, and special-purpose districts. Water utilities represent the core buyer base, with occasional participation from independent school districts procuring district-wide water treatment services and from specialized entities like the Central Florida Tourism Oversight District managing dedicated wastewater infrastructure.

Geographic activity concentrates in the Southeast, particularly Georgia (Cartersville, Gwinnett County, Macon, Griffin), Florida (Orlando, Lake Buena Vista, Tallahassee), and Texas (Dallas ISD, Lubbock, Austin, Temple), with secondary activity in Connecticut (Meriden). Recent representative opportunities include the City of Cartersville Water Department's IFB for aluminum sulfate solution, liquid lime slurry, chlorine, hydrofluosilicic acid, sodium hypochlorite, and sodium bisulfite across two treatment plants, due October 30, 2026; the City of Tallahassee's sealed-bid procurement for magnesium hydroxide slurry for hydrogen sulfide and odor control across its 1,000-mile sewer system under a five-year firm-fixed-price requirements contract, due June 16, 2026; and the City of Austin's IFB for 38% sodium bisulfite solution in 330-gallon totes on an as-needed basis, due June 9, 2026. The City of Orlando solicited a service contract for hydrogen peroxide and PRISC chemical application at three lift stations under IFB format, due September 9, 2026. Contracts typically run one to five years with optional renewal periods, emphasize NSF-60 and AWWA certification, require 48–72 hour delivery windows, and award individual line items to lowest responsive and responsible bidders.