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Overbased DetergentsNova Additives

DT-400C

Overbased calcium alkylbenzene sulfonate

The default overbased detergent across the industry. Acid neutralisation reserve plus deposit control, and the reference against which every other detergent's cost per TBN point is measured.

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Typical propertiesLiquid
Metal
Calcium

Typical values, not a specification. The binding specification is the one on the certificate of analysis issued against each batch.

The chemistry

Overbased Detergents

Acid neutralisation and deposit control

Typical treat rate0.5 – 4.0 %

Overbased calcium and magnesium sulfonates carry a colloidal carbonate core that neutralises combustion acids, plus a surfactant shell that keeps piston surfaces clean. TBN is the working currency here. Magnesium is chosen over calcium where low-speed pre-ignition or ash-related deposit behaviour is the constraint.

Used in
Engine oilsMarine cylinder & trunk-piston oilsRailroad oilsGas engine oilsRust-preventive coatings
Where DT-400C is specified

Engine Oils

Passenger-car, heavy-duty and gas engine crankcase formulations, including low-SAPS.

Rust Preventives & Quenching

Slushing oils, export packaging fluids, quench oils and heat-treatment fluids.

Other grades in Detergent
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Documentation

A full technical data sheet, safety data sheet in the language of the receiving country, REACH status statement and SVHC declaration are issued with every enquiry for DT-400C. Certificates of analysis accompany each consignment and retained samples are held for the full shelf life.

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