Ardrox® 1873A

Ardrox® 1873A is used diluted with water at a concentration of 20 % to 25 % by volume in water. The operating temperature is 80 °C – 85 °C (176 °F – 185 °F). Parts should be free from oil and carbonaceous deposits.

Ardrox® 1873A is normally used in conjunction with Ardrox® 185L and Ardrox® 188RFU and a typical process cycle would be

Ardrox® 185L 30 %v/v at 85 °C (185 °F).

Ardrox® 188RFU at 95 °C – 100 °C (203 °F – 212 °F

Ardrox® 1873A at 80 °C - 85 °C (176 °F – 185 °F).

Immersion times should be approximately 15 minutes for each stage. Since Ardrox® 1873A solutions are acidic and Ardrox® 188RFU solutions are alkaline, each process stage must be followed by a thorough water rinse.

Should complete cleaning not be achieved, stages 2 and 3 may be repeated as required. When dealing with heavy scale, it is better to use several cycles of approximately 15 minutes rather than giving extended immersion times.

When Ardrox® 1873A is used in the prescribed manner no significant corrosion will occur on ferritic stainless steels and nickel and cobalt heat resisting alloys. It also has no effect on pack aluminizing and less effect on chromium carbide plasma coatings. Ardrox® 1873A is not suitable for use on carbon or low alloy steels.

Titanium stabilized 318 stainless steel is suitable for the construction of tanks and heating element sheaths.

* The appearance can change from pale yellow to brownish over time but does not influence the performance of the product.