UNSPSC 12350000: Compounds and mixtures

A compound contains atoms of different elements chemically combined together in a fixed ratio. A mixture is a combination of two or more substances where there is no chemical combination or reaction.

UNSPSC 12350000 Compounds and mixtures is a Family code covering the procurement of chemical substances, formulations, and finished chemical products that state and local governments buy for operational, maintenance, treatment, and facility management purposes. Recent solicitations show state and local agencies purchasing cleaning chemicals, water treatment additives, wastewater treatment compounds, ice melt products, and specialized operational chemicals across dozens of jurisdictions and issuing-body types.

State and local governments buying under this code span water utilities, departments of transportation, public works, solid waste management, environmental protection divisions, and operational support departments within municipalities and counties. Recent repeat buyers include the City of Groton (Connecticut), soliciting multiple water treatment chemicals; the City of Detroit, procuring biodegradable cleaners and solvents for transit operations; water authorities in Florida, Michigan, and Arizona; and specialized districts such as the Solid Waste Authority of Palm Beach County and the Great Lakes Water Authority. Geographic activity concentrates in Connecticut, Florida, Texas, Michigan, and Arizona, with scattered activity across Rhode Island, Utah, Georgia, Massachusetts, and other states. Representative recent opportunities include the Solid Waste Authority of Palm Beach County's ITB for cleaning chemicals (soap) for truck wash facilities due August 5, 2026; the City of Santa Cruz Water Department's IFB for liquid aluminum sulfate (alum) for drinking water treatment due June 17, 2026; the Town of Killingly, Connecticut's sealed proposal for polymer emulsion delivery due July 13, 2026; and the City of Dallas's thirty-six-month ID/IQ procurement for sewer odor and corrosion control services (ferrous iron salt, ferrous chloride, and bioxide additives) with an estimated contract value of $10 million, proposals due June 26, 2026. Pricing structures typically require firm quotations on a per-gallon, per-pound, or per-unit basis, FOB delivery with freight included, and compliance with NSF or ANSI/AWWA standards for water-contact products. Insurance requirements, E-Verify employment verification, and safety data sheet submission are standard across solicitations. Several jurisdictions apply local vendor preferences allowing qualified local bidders within five percent of the lowest bid to match that price.