See  also: mercy steem 6440 | mercy steem 6201 | mercy steem6224


Corrosion & Scale Inhibitor for Steam Boiler & Closed System


Description & Use


  • Prevents corrosion.
  • Prevents carryover.
  • Suitable for use in boilers over a wide pressure range.
  • Organic base treatment.
  • Cost-effective concentrate.




  • Appearance                : dark brown liquid.
  • Specific Gravity           : 1.12 - 1.18.
  • Solubility in Water        : Complete.
  • pH @ 25 oC                  : 5.2 - 6.8.

 (All values approximate)


Dosage, Feeding & Control


Mercy Steam 6338 is normally fed to supply corrosion & scale protection for the steam boiler tubes (Water Side) and using low hardness feed water.


Mercy Steam 6338 contains a blend of tannin & polymers which will make a filming layer on the tubes & precipitates hardness salts within the boiler thus preventing the formation of hard, insulating scale at heat transfer surfaces.


Mercy Steam 6338 can be dosed simultaneously with amine on the feed line in a very concentrated rate (function of make up TDS).


Mercy Steam 6338 is controlled by a tannin index test on the boiler water.  The specific control ranges vary depending upon system operating conditions and will be specifies by the technical representative servicing the facility (required reserve = 120 - 160 ppm).




Mercy Steam 6338 is packaged in 30 kg and 240 kg plastic drums.


Safety & Handling


Mercy Steam 6338 is non-hazardous, non-flammable but corrosive.

It should be handled with care.

Ensure that the operator is fully informed and familiar with the use of the product.