Product Description

Primol 352 is a purified mixture of liquid saturated hydrocarbons. It is a colourless, transparent oily liquid and is essentially odourless and tasteless. It is obtained from petroleum through several refining stages, including an ultimate purification by catalytic hydrogenation.

Primol 352 is manufactured to exceed the purity requirements of the Pharmacopoeias Due to its superior chemical inertness, it demonstrates better colour and oxidative stability than most mineral and vegetable oils, when stored and used under controlled conditions.

ExxonMobil White Oils are produced and controlled according to the ExxonMobil Product Quality Management System, EN ISO 9000 or equivalent standard.


Primol 352 can be used in a variety of food-related, cosmetic and pharmaceutical applications subject to the applicable laws and regulations in each country (*).


Primol 352 is recommended as a food packaging-grade plasticizer in general purpose and high impact polystyrene. Primol 352 is recommended for use as an external lubricant for non-plasticized PVC. Primol 352 is an inert and protective catalyst carrier for polypropylene processes. It can also serve as a pigment powder dispersant in master batch compounding.

Elastomers and Adhesives

Primol 352 is used for producing food-contact or medical rubber articles such as EPDM or butyl rubber. It is particularly well suited for the extension of Thermoplastic Elastomers (TPE), such as SBS, SEBS or SEPS. Primol 352 is also recommended for Hot-Melt Adhesives formulations used in sanitary products.

Cosmetics and Pharmaceuticals

Primol 352 has many well-established applications in the pharmaceutical industry, like laxative jellies and ointments, and is also recommended as a component for many cosmetic products, such as creams and body lotions.

(*) User must check compliance with applicable regulations.

Properties and Specifications

Primol 352 meets the requirements of the following specifications:

  • USA FDA 21 CFR 178.3620(a), White Mineral Oil
  • US Pharmacopeia, most recent edition, Mineral Oil
  • National Sanitation Foundation (NSF), category H1, registration number 125038
  • European Pharmacopoeia, most recent edition, Liquid Paraffin
  • Europe Regulation (EU) 10/2011 on plastic material and articles intended to come into contact with foodstuff, White mineral oil

CAS number: 8042-47-5

EINECS number: 232-455-8

INCI name (Europe): Paraffinum Liquidum

CTFA Dictionary name (USA): Mineral Oil

Property Test Method Typical Min Max
Appearance Visual Clear and Bright Clear and Bright
Odor Olfactory Odorless or almost odorless Odorless or almost odorless
Color, Saybolt ASTM D 6045 + 30
Kinematic Viscosity @ 40°C, mm²/s ASTM D 445 65.0 75.0
Kinematic Viscosity @ 100°C, mm²/s ASTM D 445 8.5
Dynamic Viscosity @ 20°C mPas Calculated 165 220
Density @ 15ºC, kg/m³ ASTM D 4052 863 873
Relative Density @ 20ºC/20 °C ASTM D 4052 0.861 0.872
Relative Density 25°C/25°C ASTM D 4052 0.859 0.870
Pour Point, ºC ASTM D 5950 – 12
Flash Point, ºC ASTM D 92 240
Refractive Index, nD²° ASTM D 1218 1.473 1.479
Average Molecular Weight ASTM D 2502 480
Hydroc. with less than 25 carbons, wt % ASTM D 6352 5
Volatility @ 10 mm Hg, temp (°C) at which ASTM D 1160
2.5 wt% off 277
5 wt% off 283 275
10 wt% off 288 282
Carbon Type, % AM-s1805
Paraffinic / Naphthenic / Aromatic 68 / 32 / 0

Typical values may vary within modest ranges and specifications may be subject to change.

Health and Safety

Detailed health and safety information for this product is provided in the Material Safety Data Sheet (MSDS), available upon request through your local sales representative or from

Storage and Handling

Recommended storage and handling procedures for ExxonMobil white oil products are summarised in a separate bulletin available upon request through your local sales representative or from

Further Information

ExxonMobil supplies a range of white oils, process oils, waxes, bitumen and a full range of other lubricants, fuels and chemical products worldwide. Please contact your local ExxonMobil representative, or contact us at, for more information on other products.


It cannot be guaranteed that the product information given above is up to date. For the latest version of the Product Data Sheet we refer to the product library of ExxonMobil.