Primol N 352

ExxonMobil specialties , Hong Kong

Medicinal grade White Oil

Product Description

Primol N 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 N 352 contains 5 ppm food-grade alpha-tocopherol (vitamin E) as an oxidation inhibitor.

Primol N 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 N 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 N 352 is recommended as a food packaging-grade plasticizer in general purpose and high impact polystyrene. 

Primol N 352 is recommended for use as an external lubricant for non-plasticized PVC.

Primol N 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 N 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 N 352 is also recommended for Hot-Melt Adhesives formulations used in sanitary products.

Cosmetics and Pharmaceuticals

Primol N 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 N 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 132491
  • Europe Regulation (EU) 10/2011 on plastic material and articles intended to come into contact with foodstuff, White mineral oil 

(*): Primol N 352 does not comply with the Liquid Paraffin definition of the European Pharmacopoeia due to the addition of an oxidation inhibitor.

CAS number: 8042-47-5

EINECS number: 232-455-8

INCI name (Europe): Paraffinum Liquidum

CTFA Dictionary name (USA): Mineral Oil

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

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 1 - + 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 -
Density @ 15°C, kg/m³ ASTM D 4052 - 863 873
Relative Density 25°C/25°C ASTM D 4052 - 0.859 0.870
Pour Point, °C ASTM D 5950 - - -12
Flash Point, °C ASTM D 92 - 240 -
Refractive Index, nD²º 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 2.5 wt% off ASTM D 1160 281 - -
Volatility @ 10 mm Hg, temp (°C) at 5 wt% off ASTM D 1160 285 275 -
Volatility @ 10 mm Hg, temp (°C) at 10 wt% off ASTM D 1160 290 282 -
Carbon Type, % and Paraffinic / Naphthenic / Aromatic AM-S 1805 68 / 32 / 0 - -


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.  

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Every care has been taken in the preparation of this information. To the extent permitted by applicable law, all warranties and/or representations, express or implied, as to the accuracy of the information are disclaimed, and no liability is accepted for the accuracy or completeness of the same.