Zinc DialkyldithiophosphatesNova Additives

ZP-201

Zinc dialkyldithiophosphate — secondary C6

Secondary alkyl chemistry decomposes at lower temperature and lays down its antiwear film faster. That is precisely why passenger-car engine oil formulations reach for a secondary ZDDP rather than a primary.

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Typical propertiesLiquid

Type: Secondary
Alcohol: C6
Zinc: 8.8 – 9.6%
Phosphorus: 8.3 – 8.7%
Sulphur: 17 – 18.2%
Oil: 10%

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

Chemical identity

CAS number: 2215-35-2

Cross-reference

Grades a formulator would benchmark ZP-201 against. Naming them is not a claim of equivalence — it is where to start the comparison.

Lubrizol 1375Infineum C9417Afton HiTEC 1656Adeka Sakura-Lube 200Lanxess Additin RC 3180

The chemistry

Zinc Dialkyldithiophosphates

Antiwear, antioxidant and corrosion inhibitor in one molecule

Typical treat rate0.5 – 1.5 %

Still the most cost-effective antiwear chemistry ever commercialised. Primary alkyl ZDDPs are thermally more stable and preferred in industrial and heavy-duty applications; secondary alkyls decompose at lower temperature and film faster, which is why they dominate passenger-car engine oils. Alcohol chain length sets both the thermal stability and the hydrolytic stability.

Used in

Engine oilsHydraulic oilsIndustrial gear oilsAutomatic transmission fluidsGreasesCompressor oils

Where ZP-201 is specified

Engine Oils

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

Industrial Gear Oils

Enclosed gear drives, wind turbine gearboxes and heavy industrial reducers.

Hydraulic Fluids

Anti-wear hydraulic oils, including zinc-free and fire-resistant fluids.

Driveline & Transmission

Automatic and manual transmission fluids, axle oils, EV reduction-gear fluids.

Other grades in ZDDP

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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 ZP-201. Certificates of analysis accompany each consignment and retained samples are held for the full shelf life.

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