Chemical processing plant Problem: Severe corrosion (8–10 mpy) on carbon steel heat exchanger tubes. Copper pitting in admiralty brass bundles. Frequent leaks every 18 months. Solution: Converted from a low-phosphate program to NALCO 8457 at 60 ppm residual, with pH controlled at 8.0–8.3 using sulfuric acid. Results:

: It provides effective corrosion inhibition for both ferrous and yellow metals (like copper and brass) in open recirculating cooling systems.

Disclaimer: This paper is for informational purposes only. Actual performance depends on site-specific conditions. Consult Nalco Water engineers for tailored recommendations.

A hard copy of the SDS is legally required to be included with the shipment of the product. Safety Data Sheets - SDS - MSDS - Ecolab

Nalco 8457 Jun 2026

Chemical processing plant Problem: Severe corrosion (8–10 mpy) on carbon steel heat exchanger tubes. Copper pitting in admiralty brass bundles. Frequent leaks every 18 months. Solution: Converted from a low-phosphate program to NALCO 8457 at 60 ppm residual, with pH controlled at 8.0–8.3 using sulfuric acid. Results:

: It provides effective corrosion inhibition for both ferrous and yellow metals (like copper and brass) in open recirculating cooling systems. nalco 8457

Disclaimer: This paper is for informational purposes only. Actual performance depends on site-specific conditions. Consult Nalco Water engineers for tailored recommendations. nalco 8457

A hard copy of the SDS is legally required to be included with the shipment of the product. Safety Data Sheets - SDS - MSDS - Ecolab nalco 8457