DESCRIPTION
CAS: 70024-69-0
Molecular formula: (RC6H4SO3)2Ca·(CaCO3)x
Calcium Alkyl Benzene Sulfonate TBN400 is a high-alkaline synthetic calcium sulfonate additive synthesized through neutralization and super-alkalization reactions, primarily using heavy alkylbenzene sulfonic acid as the main raw material. It has an extremely strong acid neutralization capability, which can rapidly neutralize organic and inorganic acids (such as sulfur/nitrogen oxides) generated by the oxidation of lubricating oils. It is particularly suitable for engine oils using high-sulfur fuels (sulfur content > 1%) and can protect metal components from corrosion. Compared with ordinary calcium sulfonate (TBN 200-300), its alkaline reserve is increased by 30%-50%, extending the oil change interval. Calcium Alkyl Benzene Sulfonate TBN400 can still maintain a stable colloidal structure at high temperatures (>200℃), inhibiting the formation of carbon deposits and varnish in the piston top ring groove, and is suitable for high-temperature operating conditions such as turbocharged engines and marine diesel engines. The super-alkalization process optimizes the distribution of calcium carbonate micelles (particle size ≤ 50nm), reducing the phenomenon of "alkaline loss" and maintaining long-term performance. The calcium metal active centers can form a surface protective film, reducing the friction coefficient (four-ball test wear scar diameter ≤ 0.40mm, load 392N). Calcium Alkyl Benzene Sulfonate TBN400 has a low tendency to emulsify and can maintain the stability of the grease structure in humid environments, making it suitable for humid/wet scenarios such as ships and metallurgy. It also has certain rust prevention properties, protecting engine components from rust damage.
Key Benefits
High TBN for Outstanding Acid Neutralization
Excellent Detergency to Keep Engine Surfaces Clean
Superior Oxidation and Thermal Stability
Good Solubility and Compatibility with Various Base Oils
Wide Application Suitability for Diesel Engines, Marine Oils, and Industrial Lubricants

APPLICATIONS
Internal Combustion Engine Oil: Widely used in the formulation of lubricating oils for gasoline, diesel, natural gas, and other fuel engines. It can effectively neutralize acidic substances generated during engine operation, maintain engine cleanliness, and extend engine life.
Marine Oil: Particularly suitable for the formulation of marine cylinder oils. Marine engines often use high-sulfur fuels, which produce a large amount of acidic substances. The high-alkaline value characteristics of TBN400 alkylbenzene sulfonate calcium can effectively neutralize these acidic substances.
Industrial Lubricants: Can also be used in the formulation of other industrial lubricants such as industrial gear oils and hydraulic oils, improving the cleanliness and anti-wear properties of lubricating oils.
Customization & Technical Support
At He Ao, we understand that different markets and applications require tailored solutions. We provide flexible customization services for HA106 to match your exact performance or specification requirements, including:
Adjustment of TBN level(tbn 300-400 mg KOH/g)
Viscosity range control(1100-1300 kg/m3)
Specific calcium or sulfur content(Calcium content 10-16%, sulfur content 1.2-1.8%)
Color level adjustments(≤5.0)
Whether you need small-scale samples for formulation testing or bulk orders for commercial use, we support multi-spec packaging, custom labeling, and formulation consulting.
We also offer additional services such as:
Third-party quality verification (SGS, INTERTEK)
Bench testing & formulation optimization
API certification consulting for lubricant products
RECOMMENDED DOSAGE
The recommended dosage is from 1.5% to 20.0%.
CHARACTERISTICS
|
ITEM
|
TYPICAL VALUE
|
TEST METHOD
|
|
Appearance
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Brown Clear liquid
|
Visual
|
|
Density (20℃), kg/m³
|
1150-1250
|
NB/SH/T 0870, ASTM D7042
|
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Flash point (COC), ℃
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≥180
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GB/T 3536, ASTM D92
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Kinematic Viscosity (100℃), mm²/s
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60-120
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NB/SH/T 0870, ASTM D7042
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|
TBN, mg KOH/g
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395-415
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SH/T 0251, ASTM D2896
|
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Calcium, %(m/m)
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15.0-16.0
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NB/SH/T 0824, ASTM D4951
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Sulfur, %(m/m)
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1.2-1.8
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SH/T 0689, ASTM D5453
|
|
Water, %(m/m)
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≤0.3
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GB/T 260, ASTM D95
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Color(D),Scale
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≤5.0
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GB/T 6540
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PACKING
Drum/ IBC