Distillates (petroleum), hydrotreated heavy naphthenic

Distillates (petroleum), hydrotreated heavy naphthenic, also known by the trade name TECHNOMELT EM 357, is a refined petroleum-derived base oil produced through hydrotreatment.

Identified by CAS 64742-52-5, it functions primarily as a base fluid and carrier in lubricant formulations and industrial oil blending applications across various sectors.

In lubricant manufacturing, it serves as a base oil component in gear oils, compressor oils, and industrial process oils where high solvency and good additive compatibility are required.

The oil's naphthenic character makes it a preferred base for rubber process oils and transformer oils, where aromatic content must be controlled to meet end-product specifications.

In metalworking, it is blended into cutting fluids and rust-preventive formulations to provide film-forming lubrication on metal surfaces during high-intensity industrial operations.

Automotive and industrial grease manufacturers also use it as a carrier fluid to achieve the desired consistency and performance profile in finished grease products for heavy machinery.

Supplied as a clear to pale yellow liquid in bulk tankers, IBCs, and drums, the technical grade is the standard commercial form for most industrial buyers and chemical distributors.

Viscosity grades are typically specified by buyers to match target formulation requirements, and suppliers may offer variants conforming to specific base oil group classifications.