Name: Nitrite-Free Corrosion Inhibitor NFCI-20
Brand: Coatingsink
SKU: nitrite-free-corrosion-inhibitor-nfci
Availability: InStock

Question 1

Which metal substrates does NFCI-20 protect?

Accepted Answer

NFCI-20 provides effective corrosion inhibition on ferrous substrates (mild steel, cast iron) and non-ferrous metals including aluminum and zinc-coated steel. It is particularly suited for multi-metal systems where a single inhibitor package must cover mixed substrates.

Question 2

Is NFCI-20 compatible with standard waterborne acrylic and polyurethane dispersions?

Accepted Answer

Yes. NFCI-20 is designed for compatibility with waterborne acrylic, alkyd-acrylic, and polyurethane dispersions at pH 7.5–9.5. It does not interfere with typical coalescents or co-solvents. Compatibility with specific binder systems should be confirmed by trial at the target addition level.

Question 3

What makes NFCI-20 a replacement for sodium nitrite in flash-rust inhibition?

Accepted Answer

Unlike sodium nitrite, NFCI-20 uses a carboxylate-amine complex mechanism that passivates the metal surface without generating potentially carcinogenic nitrosamine by-products. It meets REACH substance-of-very-high-concern (SVHC) requirements and is suitable for formulations targeting eco-label certification.

Appearance	Clear to slightly hazy liquid
Active Content	30 ± 2%
Density (25°C)	1.08 g/ml
pH (10% aqueous)	8.5–9.5
Recommended Dosage	0.5–2.0% on total formulation

Nitrite-Free Corrosion Inhibitor NFCI-20

Specifications

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