Urea and Ammonia Based Chemicals for NOx Abatement

Colonial Chemical Company is a leading supplier of urea to the power industry with over 17 years of experience delivering over 150,000 tons of Urea and Ammonia each year. We provide excellent service, high quality products and great value to our customers. Colonial has over 50 employees including Chemists, Engineers and dedicated customer service and technical support.

Urea Solution is a manufactured product of urea mixed with pure water. It is a clear, non-hazardous, and non-flammable liquid. The urea solution is produced to meet the exacting specifications of our customers for their NOx reduction processes. We are able to supply high quality urea in quantities ranging from single bags or drums to full railcars.

Urea Quality and Properties

Blackboard with the chemical formula of Urea

Urea is created from synthetic ammonia and carbon dioxide when subjected to high heat and pressure and can be produced as a liquid or solid.  The chemical formula for urea is NH2CONH2. Ninety percent of urea is used as fertilizer with other applications including NOx reduction, plastics, animal feed, cleaning agents, and pharmaceutical applications.The concentrations or strengths we supply are 70%, 50%, 40% and 32.5% with or without Fuel Tech NOxOUT Urea Solution, as well as dry granular and prilled Urea.

The typical properties are:

SCR Grades
32.50% 40% 50%
Urea Strength (+/- 1%) 32.5 40 50
Free Ammonia (at loading) <0.3% <0.3% <0.5%
Biuret (at loading) <0.5% <0.5% <0.5%
Magnesium (Mg) <.08 ppm <.08 ppm <.08 ppm
Calcium (Ca) <.08 ppm <.08 ppm <.08 ppm
Phosphates as PO4 <1.5 ppm <1.5 ppm <1.5 ppm
Iron (Fe) <.08 ppm <.08 ppm <.08 ppm
Formaldehyde None None None
Water Quality DeMin DeMin DeMin
Pounds per Gallon 9.11 9.299 9.45
Salt Out Temp (F) 11 33 64


Colonial Chemical is a Qualified NOxOUT® Reagent Suppliers for SNCR and SCR Applications covering the entire United States.

NOxOUT® and HERT™ Processes

Storage and Delivery

Urea Storage Tanks

Vertical, atmospheric tanks are appropriate for storing urea solution and are typically sized from 6,000 gallons to 30,000 gallons. Tank heating and insulation are required to maintain the urea solution above the salt-out temperature. The tank should provide temperature and level indications. Colonial can furnish a telemetry system which provides an effective, low cost means of monitoring the urea inventory and ensuring deliveries are made at the right time with minimal customer effort.

Recommended Materials of Construction: Stainless Steel, Polyethylene, Polypropylene, PFA, PFE, PVDF, PTFE (free of additives)

Bulk Deliveries

Bulk deliveries of Colonial urea solution are made in dedicated stainless steel insulated tank trucks. The urea is discharged through the mid or rear tank bottom and a flexible hose usually 20 to 40 feet long. Our trucks vary in dimensions but typically a tractor and trailer are 65 feet long, 8 feet wide with a turning radius of 200 feet.
Capacity: 5,000 gallons / 23 to 24 tons
Gross weight: 40 tons
Offload time: 40 minutes / 125 gallons per minute
Connection: 2 to 3 inch stainless steel with female cam lock connection
PPE: Hard hat, gloves, steel toe boots
Certificate of Analysis and Bill of Lading provided with each delivery

National Supply Locations

Colonial Chemical Company has an extensive national supply network, serving all regions of the United States. The concentrations or strengths we supply are 70%, 50%, 40% and 32.5% with or without Fuel Tech NOx OUT Urea Solution, as well as dry granular and prilled Urea.  Colonial offers bulk as well as a full line of packaged (liquid) industrial urea products and offers telemetry based vendor managed inventory for bulk liquid installations and Ammonia.

Map of U.S. shipping locations