Specialty Additives Available — Bulk Only

Naphthenic Oil (Naphthenic Base Oil)

CAS 64742-52-5

A high-solvency naphthenic base fluid for rubber processing, lubricant formulation, and plasticizing. Its low pour point and high solvency make it a process and extender oil for rubber, a base oil for greases and metalworking fluids, and a plasticizer for adhesives and inks.

Safety Data Sheet
HS Code
2710.19
At a Glance
Material Family
Specialty Additives
Record Type
Pure compound
Primary Role
Lubrication · Solvency
Functional Roles
Applications & Use Cases
  • Rubber process oil: Extender and process oil for rubber compounds.
  • Lubricant base oil: Base fluid for greases and metalworking fluids.
  • Plasticizer: Plasticizing oil for adhesives, sealants, and inks.
  • Electrical oils: Base oil for transformer and insulating fluids.
Physical Properties
appearance
Clear to pale yellow oily liquid (typical)
odor
Mild petroleum / hydrocarbon odor (typical)
physical_state
Liquid (typical)
density
0.88-0.95 g/cm3 at 15 C (typical)
kinematic_viscosity
20-500 cSt at 40 C, grade-dependent (typical)
pour_point
-30 to -10 C (typical)
flash_point
>150 C, COC, grade-dependent (typical)
water_solubility
Insoluble / negligible (typical)
aniline_point
70-90 C (typical, naphthenic-characteristic low value)
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2710 . 19
Chapter 27
Mineral fuels, mineral oils and products of their distillation
Heading 27.10
Internationally harmonized (WCO HS)
Subheading 2710.19
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
64742-52-5
Synonyms & Trade Names
Distillates (petroleum), hydrotreated heavy naphthenic Hydrotreated heavy naphthenic distillate Naphthenic oil Naphthenic base oil Naphthenic process oil Naphthenic mineral oil Rubber process oil (naphthenic)
Full Description

Naphthenic oil (CAS 64742-52-5) is a hydrotreated heavy naphthenic petroleum distillate. Its low pour point and high solvency make it a process and extender oil for rubber, a base oil for greases and metalworking fluids, and a plasticizer for adhesives and inks.

Frequently Asked Questions

What is naphthenic oil used for?

Naphthenic oil (CAS 64742-52-5) is a hydrotreated heavy naphthenic petroleum distillate used as a rubber process and extender oil, a base oil for greases and metalworking fluids, a plasticizer for adhesives, sealants and inks, and a base oil for transformer and insulating fluids. Its low pour point and high solvency drive these uses. RawSource supplies it in bulk.

Is naphthenic oil better than paraffinic oil?

Neither is universally better — the choice depends on the application. Naphthenic oils offer higher solvency and lower pour points, favoring rubber, adhesives, inks and low-temperature fluids, while paraffinic oils offer higher oxidation stability and viscosity index. Specify your end use when requesting a quote so the correct grade is matched.

In which products are naphthenic oils usually found?

They are commonly found in rubber compounds (as process/extender oils), greases and metalworking fluids, adhesives, sealants and printing inks, and transformer/insulating fluids. The grade selected depends on viscosity and solvency requirements of the formulation.

What is the HS code for naphthenic oil?

Naphthenic oil classifies under HS 2710.19 — petroleum oils (other than crude) not elsewhere specified, not containing biodiesel. Verify the destination tariff line with your customs broker; commercial and origin documentation is provided with each shipment.

What is the cost of bulk naphthenic oil?

Bulk pricing varies with viscosity grade, packaging, and volume. Contact RawSource with your viscosity target and quantity (drums, totes, or bulk) for a current quote, CoA, and SDS.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.