Letter 17095

Will solvent-based rust preventive agent dissolve Chromate Sealer? 

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Hi all,

We applied Chromate Sealer on the blue chromating of the zinc plating as topcoat. To enhance the corrosion resistancy, we have additional of anti-rust agent (strong solvent-based) dipping before handling.

These chromate sealer layer (with blue zinc as undercoat) is potential to external rubbing/scraching/wearing etc during assembliment, handling and storage. I'd like to know if the solvent-based anti-rust agent would weaken (even dissolve) the chromate sealer, which is an inorganic protective paint to the zinc. Thanks for advice.

Regards,

Chee Hong, Lee
- Singapore

If the solvent base is acid it will strip the coating to some extent - if it is only solvent then probably it will have no effect.

Robert D Lilley
- Singapore

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