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ChemWorld 791CS - Boiler Scale Removal - 5 to 55 Gallons

ChemWorld 791CS - Boiler Scale Removal - 5 to 55 Gallons

Our Price: $323.99

Availability: Usually Ships in 24 Hours

Product Code: cw-791cs


Chelant Boiler Chemical

ChemWorld 791CS is an All-in-One Boiler product that contains a Chelant for "faster" scale removal within a steam boiler system. The product also contains a polymer, sulfite, and amine.

ChemWorld 791CS is controlled based on the sulfite level of the boiler, with a recommended sulfite range of 20 to 40 ppm sulfite. We do not recommend running the sulfite above 40 ppm to avoid the potential for corrosion due to chelant overfeed.

We highly recommend that once the boiler is clean that they switch to a less aggressive, All-in-One products like ChemWorld 1197 that is very excellent at controlling scale in boilers with high levels of hardness in the makeup but does not have the potential to corrode the boiler if overfed.

Before using this product you must have a well functioning softener system.
One gallon containers of Boiler Antifreeze are Stocked & Shipped daily from Atlanta, Georgia; Detroit, Michigan; and Salt Lake City, Utah.

Daily shipping cut off time is generally 1 pm, based on the local time zone for same day shipping. If you need this product to ship today, please indicate so in the notes section upon check out. We will email mail you ASAP if we can meet your demands.

Figure 1- Fedex Residential and Ground
Transit Time Map

  • We only ship via FedEx ground. No UPS or USPS.
  • We can not ship to PO boxes.
  • This map illustrates service schedules in business days as of Dec 2016 for FedEx Ground shipments.
  • ChemWorld is not responsible for delays due to weather or Fedex transit issues. Please take this into account when ordering.
Overnight / Expedite Shipping:
  • Orders must be received by noon.
  • We only ship FedEx expedite shipments. No UPS or USPS.
  • To calculate your costs, log into your FedEx Account. Origin zip code is 30144, 48180, or 84119.
Directions for Overnight Shipping:
  • Order must be placed by noon.
  • Order as normal through the website.
  • If you have a FedEx Account number, enter it in the notes section during ordering with your exact shipping requirements (Next Day 8:30, Next Day 10:30, Next Day 20:00, Fedex 2 AM, or FedEx Express Saver). You are done. We will email you ASAP.
  • If you do NOT have a FedEx Account number, we offer overnight delivery for this product. The cost is $60 for Next Day 10:30 AM per 1-gallon box. Enter your order as normal and enter your 3 or 4 digit security code in the notes section with your shipping requirements. You are done. We will email you ASAP.

If it is later then noon, email us at with your request. We will contact you ASAP. You can also call in the order at 800-658-7716 and reference exactly what you need. We will contact you.