Barium Dinonylnaphthalene Sulfonate Rust Inhibitor

Name: Barium Dinonylnaphthalene Sulfonate Rust Inhibitor
Brand: Chemzip
Price: 1 USD
Availability: InStock

CAS Number: 25619-56-1

Barium dinonylnaphthalene sulfonate is a classical high-performance rust and corrosion inhibitor with exceptional water-displacing properties, used in protective oils, rust preventive compounds, and metalworking fluids. The barium salt form provides stronger adsorption on metal surfaces compared to calcium analogues and is particularly effective in humidity-cabinet and salt-spray testing conditions. It remains the benchmark rust inhibitor for long-term storage and preservation applications despite newer alternatives.

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Technical Specifications

TBN	20–60 mg KOH/g
appearance	Amber to brown liquid
barium content	8.0–12.0 wt%
flash point (COC)	>175 °C
sulfonate (sulfur) content	2.5–4.0 wt%
kinematic viscosity (100°C)	15–60 mm²/s

Applications

Long-term storage and preservation oils for metal components and machinery
Salt-spray resistant rust preventive compounds for military and aerospace parts
Industrial hydraulic oils requiring rust inhibition in humid environments
Metalworking coolants and neat cutting oils
Protective coatings for steel sheet and coil storage

Key Features

Superior salt-spray and humidity cabinet performance versus calcium and sodium sulfonates
Strong tenacious adsorption on ferrous and non-ferrous metal surfaces from mineral oil carriers
Excellent water-displacement and water-repellency for protection under wet operating conditions
Proven long-service history as benchmark rust preventive in military and industrial preservation specifications