MD-860
C8 thiadiazole derivative (DMTD)
Copper passivation plus a real EP contribution from 28–34 % sulphur. The shortest alkyl chain in the DMTD range — highest active density, lowest solubility.
- Nitrogen
- 4.0 – 5.0%
- Sulphur
- 28 – 34%
Typical values, not a specification. The binding specification is the one on the certificate of analysis issued against each batch.
- CAS number
- 13539-13-4
- EC number
- 236-912-2
Grades a formulator would benchmark MD-860 against. Naming them is not a claim of equivalence — it is where to start the comparison.
Yellow Metal Deactivators
Copper passivation and catalytic-oxidation suppression
Triazoles and thiadiazoles chelate onto copper and its alloys. Two jobs at once: they stop the metal from being attacked, and they stop dissolved copper ions from catalysing oxidation of the base oil. In a turbine or gear oil, omitting these is how you get a fluid that fails oxidation testing for reasons nobody can explain.
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.
Greases
Lithium, lithium-complex, calcium sulfonate and polyurea thickened greases.
Metalworking Fluids
Neat cutting oils, soluble oils, semi-synthetics and forming lubricants.
Turbine & Compressor Oils
Steam, gas and hydro turbine oils, rotary and reciprocating compressor fluids.
Driveline & Transmission
Automatic and manual transmission fluids, axle oils, EV reduction-gear fluids.
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 MD-860. Certificates of analysis accompany each consignment and retained samples are held for the full shelf life.
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