E-2300 Aluma-Dyne Conversion Coating {DISCONTINUED}


This product has been discontinued and is no longer manufactured by PolyFiber. You may substitute ALODINE 1201 for this product. PolyFiber makes no guarantees as to how suitable this replacement is for your application. It is your responsibility to verify that this replacement product will work for your application.


A brush-on chromic acid treatment to improve corrosion protection on all aluminum surfaces and to improve primer adhesion.

E-2300 Aluma-Dyne chemically accelerates the formation of the natural passive oxide film (technically a ceramic) on aluminum surfaces to resist galvanic corrosion by blocking any electrochemical cell. Does not discolor or change the surface appearance. Not harmful if trapped in faying surfaces, and is non-flammable. A concentrated solution. Dilute before using.


New aluminum should be cleaned with 1 part 310 Alkaline Cleaner in 20 parts water, using a sponge to remove any light contamination. Old corroded or stained aluminum surfaces should be treated with E-2310 Aluma-Dyne Phosphoric Acid Etch and Brightener, followed with E-2300 within 8 hours or before weather exposure.

Dilute E-2300 Aluma-Dyne 1 part to 2 parts clean water in a clean plastic, porcelain, or stainless steel container.

Using rubber gloves and eye shield, apply diluted E-2300 Aluma-Dyne with a nylon or polyester brush or swab with a sponge, working a limited area to provide adequate attention. Continue wiping the surface, especially vertical and bottom areas, to replenish drained-off or spent solution. Horizontal surfaces which allow the solution to pool will require less reapplication.

Conversion coating action of E-2300 Aluma-Dyne is invisible and no color change will be noticed. Keep the surface wet for 5 to 7 minutes, and rinse off with clean water or wipe off with clean wet rags rung out in clean water. If the chromic acid is allowed to dry on the surface, the penetrating stain will require phosphoric acid etch to remove.

For mirror finish on unpainted aluminum, surface should be buffed before, not after, E-2300 Aluma Dyne treatment to avoid removing the conversion coating. Remove any buffing compound residue with 310 Alkaline Cleaner before the E-2300 Aluma-Dyne treatment.


One quart Aluma-Dyne E-2300 will treat approximately 250 sq ft of surface area.


Guaranteed four years in sealed container in protected storage. Avoid long-range storage above 100°F. Protect from freezing.


One-quart plastic bottles.