Overbased Barium Sulfonate
Overbased barium sulfonate — a barium detergent and rust inhibitor used in specialized industrial lubricants, rust preventives and metalworking fluids where barium's properties are required.
The barium detergent for specialized industrial applications
Overbased barium sulfonate offers detergency and strong rust protection for specialized industrial lubricants, rust preventives and metalworking fluids where barium chemistry is specified.
Overbased barium sulfonate provides detergency, acid neutralization and notably strong rust and corrosion protection. While calcium and magnesium dominate modern engine oils, barium sulfonate retains an important role in specialized industrial lubricants, rust-preventive oils and metalworking fluids where its particular performance is required. Note that barium additives are subject to regional environmental and regulatory considerations, so application should be matched to local requirements. It belongs to the sulfonate detergent family.
Overbased Barium Sulfonate — typical properties
Representative typical values for overbased barium sulfonate. Indicative only — exact values vary by grade and are confirmed on the TDS and batch COA.
| Property | Typical Value | Method / Note |
|---|---|---|
| Appearance | Brown viscous liquid | Visual |
| Total Base Number (TBN) | ~The grade range varies | ASTM D2896 · grade-dependent |
| Barium content | Grade-dependent | Refer to TDS |
| Kinematic viscosity (100°C) | ~50–300 mm²/s | ASTM D445 |
| Flash point (COC) | > ~170 °C | ASTM D92 |
| Density (15°C) | ~1.1–1.3 g/cm³ | Typical |
| Sulphated ash | High (overbased) | ASTM D874 |
Typical values for guidance only — not a specification. Request the TDS for the specific grade you need; the COA reports actual measured values for your batch.
Where overbased barium sulfonate is used
Industrial Lubricants
Detergency and rust protection in specialized industrial oils where barium chemistry is specified.
Rust-Preventive Oils
Strong corrosion protection for rust-preventive and protective coating formulations.
Metalworking Fluids
Corrosion protection and surfactancy in specialized metalworking applications.
Specialty Greases
Used where barium sulfonate's properties suit the grease or lubricant system.
Why formulators choose overbased barium sulfonate
Strong rust protection
Notably strong corrosion protection for rust-preventive and industrial applications.
Detergency + acid control
Provides detergency and acid neutralization in specialized lubricant systems.
Specialty applications
Fills a defined role where barium chemistry is required, matched to regional requirements.
From sample drum to ISO tank
Sinolook supplies overbased barium sulfonate at any scale, from formulation samples to commercial bulk, to over 60 countries.
Frequently asked questions
What is overbased barium sulfonate used for?
What is the difference between barium, calcium and magnesium sulfonate?
Are there regulatory considerations for barium additives?
Does barium sulfonate provide good rust protection?
Can Sinolook provide TDS, MSDS and COA?
Request overbased barium sulfonate from Sinolook
Tell us your target grade, application and volume — we'll send the TDS, a batch COA and a delivered quotation within 24 hours.
Request a Quote