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Zinc DialkyldithiophosphatesNova Additives

ZP-202

Zinc dialkyldithiophosphate — secondary C3/C6

Mixed secondary C3/C6 — the classic passenger-car engine oil ZDDP. Fast film formation with better thermal behaviour than a pure short-chain secondary.

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Typical propertiesLiquid
Type
Secondary
Alcohol
C3/C6
Zinc
8.8 – 9.6%
Phosphorus
7.9 – 8.5%
Sulphur
16.8 – 17.8%
Oil
15%

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

Chemical identity
CAS number
84605-29-8
EC number
283-392-8
Cross-reference

Grades a formulator would benchmark ZP-202 against. Naming them is not a claim of equivalence — it is where to start the comparison.

Lubrizol 1375Afton HiTEC 7197Infineum C9417Adeka Sakura-Lube 200
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-202 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-202. Certificates of analysis accompany each consignment and retained samples are held for the full shelf life.

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