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Boiler & Chiller Corrosion Inhibitor - 5 Gallons
Boiler Corrosion Inhibitor
Boiler Rust Inhibitor

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Boiler & Chiller Corrosion Inhibitor
Our Price: $239.99
Sale Price: $159.99
Savings: $80.00

Quantity in Stock:9

Availability: Usually Ships in 24 Hours
Product Code: CHEMWORLD-2338-5

The following document(s) will be emailed upon shipment of your order or download now:

Product Color*:

Nitrite Test Kit*:

Test Strips*:


Description Shipping & Transit Times

Water Corrosion Inhibitor

What is a ChemWorld 2338D?
ChemWorld 2338 is designed to minimize corrosion to hot water boiler and chiller systems. ChemWorld 2338D is pink in appearance. ChemWorld 2338 & 2338D are closed water system treatment programs designed to treat hot and chilled water systems. The product contains a combination of nitrite, borate, and silicate formulated to minimize corrosion and deposits. The product comes in a clear and pink appearance form. This product is not intended for use in steam boilers. This product is compatible with propylene glycol.

How much chemical do I have to add to my system?
5 Gallons treats roughly 875 to 1,250 gallons of fresh water. Below is an easy to use the chart for determining the amount of Boiler Rust Inhibitor required for new systems.

Gallons of Product Required Gallons of Water
55 Gallons
9,625 to 13,750
5 Gallons
875 to 1,250
2 Gallons
350 to 500
1 Gallon
175 to 250

Residuals of this product can be monitored with a nitrite test kit or nitrite test strips.

For critical hot water applications, we recommend monitoring the boiler water pH and conductivity as a reference in case future problems occur.

  • Sodium Nitrite - Cas No: 7632-00-0: 10 to 20%
  • Sodium Borate - Cas No: 12179-04-3: 1 to 5%
  • Sodium Metasilicate, Pentahydrate - Cas No. 10213-79-3: 1 to 5%
  • Sodium Hydroxide - Cas No: 1310-73-2: < 1%
Stocked in Atlanta, Georgia; Taylor, Michigan; and Salt Lake City, Utah.
Frequently Asked Questions
We have a closed-loop cooling system with a mix of Aluminum, Copper, and Stainless cooling and/or piping materials. The materials are galvanically isolated from one another. For process reasons, we use deionize the water. I want to add a corrosion inhibitor and oxygen removal chemical(s). What do you recommend? We suggest just using ChemWorld 2338. You should not need a oxygen scavenger in a closed loop system unless your constantly adding fresh make up water with dissolved oxygen.

I am looking for something to add to our chiller loop that will clean the water and clean up the flowmeters from corrosion. What do you recommend? We typically do not not recommend removing rust from a closed loop system. We would rather you install a side stream filter (Neptune feeder) and filter the debris. Then use 2338D to prevent corrosion.
If you remove the rust you take the chance of creating a new problem if the rust is what’s holding sections of the pipes together. You risk the chance of creating leaks at the unions or piping.

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 20 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Great experience January 11, 2023
Reviewer: Darryl Dean from Waynesville, NC United States  
Seamless end to end order to job site order.

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  0 of 0 people found the following review helpful:
4 of 5 Boiler and chiller corrosion inhibitor - 5 gal November 4, 2021
Reviewer: Kurt Nordbrock  
All good. Thx

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  0 of 1 people found the following review helpful:
5 of 5 Corrosion inhibitor July 17, 2021
Reviewer: from , Mc Calla  
Easy pour spout and quick delivery.

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  1 of 1 people found the following review helpful:
5 of 5 May 27, 2021
Reviewer: Richard Moran from Spokane, WA United States  
Chemworlds products perform and their customer service has been excellent.

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  1 of 1 people found the following review helpful:
5 of 5 Great service July 3, 2020
Reviewer: Anonymous Person  
Their service was great their staff was very knowledgeable and help me choose the correct product for my needs

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