NA-SUL^® Rust & Corrosion Inhibitors

Since the introduction of the first products in 1952, the NA-SUL trade name has been synonymous with high quality, cost-effective rust protection. After 50 years of continuous improvement and innovation, these unique synthetic sulfonates continue to be recognized as the premium rust and corrosion inhibitors for industrial and automotive lubricants, greases, metalworking fluids, and rust preventives.

The NA-SUL line is based upon salts of dinonylnaphthalenesulfonic acid. Controlled alkylation of naphthalene with nonene produces dinonylnaphthalene. This molecule is then sulfonated to produce the building block sulfonic acid that becomes a NA-SUL when converted into various ashless and metal salts. Direct neutralization is employed to produce many different salts, which are either chemically neutral or alkaline.

The NA-SUL line provides excellent rust and corrosion protection in addition to other unique performance properties. Direct neutralization produces sulfonates with no chlorine, resulting in enhanced rust protection and resistance to staining.

Performance - Rust & Corrosion Protection

The NA-SUL line consistently outperforms other synthetic or petroleum sulfonates, thus offering:

• Better performance at equal or lower concentrations
• Higher maximum performance
• Ferrous and non-ferrous metal protection
• Synergy with other anti-rust additives

In addition to superior rust and corrosion inhibition, NA-SUL inhibitors impart other desirable performance properties to industrial lubricants and rust preventive applications, including:

• Unsurpassed demulsibility
• Enhanced oxidation stability
• Excellent filterability
• Excellent additive compatibility
• Excellent solubility

NA-SUL Inhibitors for Industrial Lubricants

NA-SUL Neutral Metal Salts

Neutral dinonylnaphthalenesulfonates are used in almost all applications where premium rust and corrosion inhibitors are required. The divalent metal salts also exhibit excellent demulsibility. Several of the neutral metal sulfonates are available in a variety of diluents.

Product	Metal DNNS Salt*	Description	Technical Data Sheet
NA-SUL 707	Lithium	Low ash rust inhibitor with good high temperature stability in industrial oils and greases. Retards bleeding in lithium soap greases.
NA-SUL 729	Calcium	Premium rust inhibitor for petroleum and synthetic lubricants, hydraulic fluids and circulating oils. Outstanding water resistance properties - including demulsibility, wet filterability, and hydrolytic stability.
NA-SUL BSN	Barium	Premium rust inhibitor for industrial lubricants, greases, rust preventive fluids and metalworking specialties.  Excellent water resistance properties.  Non-staining to metal surfaces.  Widely used in gear oils and greases.
NA-SUL MG	Magnesium	Lowest ash premium rust inhibitor.  Particularly effective in rust preventive applications exposed to water, such as ballast tank coatings.
NA-SUL SS	Sodium	High molecular weight sodium sulfonate.  Not an emulsifier, but excellent additive to enhance rust preventive properties of emulsions.
NA-SUL ZS	Zinc	Premium rust inhibitor for industrial oils, greases and hydraulic fluids, particularly when used in combination with zinc dithiophosphates.

NA-SUL Basic Metal Salts

Basic sulfontes find application as rust inhibitor in lubricants, greases or metalworking specialties where alkalinity is desirable to neutralize mild acid contamination, thus improving oxidation stability. They are also used in rust preventives to improve performance when applied over contaminated substrates. The diluent oil used is a hydrotreated naphthenic.

Product	Amine DNNS Salt*	Description	Technical Data Sheet
NA-SUL AS	Ammonia	Ashless rust inhibitor used in wide range of petroleum fluids, including distillate fuels.  May be used as supplemental additive with other rust inhibitors.
NA-SUL DTA	Diethylenetriamine	Stable ashless rust inhibitor with good demulsibility in petroleum and synthetic lubricants.
NA-SUL EDS	Ethylenediamine	Ashless rust inhibitor for lubricants, distillate fuels and mild-duty rust preventives.  Diluent is 70°C flash aliphatic solvent.

NA-SUL Grades for Specialty Lubricants

A number of specialty NA-SUL grades have evolved for applications with different requirements than the sulfonates alone can provide. Various complexes take advantage of synergisms to enhance properties.

Product	DNNS Salt Derivative*	Description	Technical Data Sheet
NA-SUL 729-NF	Calcium + YMD**	Premium ferrous rust inhibitor plus yellow metal deactivator for non-ferrous corrosion protection.
NA-SUL BSN-HT	Barium Complex	Synergistic rust inhibitor with excellent thermal stability. Particularly suited for high temperature applications.
NA-SUL CA-1089	Calcium Complex	Exceptional additive providing excellent rust protection, demulsibility, filterability (dry and wet) and thermal stability.  Makes excellent RP fluids and dewatering fluids because of its superior water resistance.
NA-SUL CA-HT3	Calcium Complex	Excellent rust inhibitor with thermal stability and good demulsibility required for applications such as paper machine oils and high temperature circulating fluids.
NA-SUL MG-HT	Magnesium Complex	Synergistic rust inhibitor with thermal stability.  Particularly effective at neutralizing the corrosivity and staining of chlorinated paraffins.
NA-SUL ZS-HT	Zinc Complex	Excellent rust inhibitor, particularly in systems with other zinc containing additives.  Exhibits antioxidation synergism with primary antioxidants in petroleum and PAO base fluids.