Castor Oil Solutions

Vertellus supplies a variety of castor oil grades the uses of which are dictated by acid value, moisture level, color, and purity.  Castor oil is a triglyceride of fatty acids, with the fatty acid content being approximately 90% ricinoleic acid.  Ricinoleic acid is an 18-carbon acid having a double bond in the 9-10 position and a hydroxyl group on the 12th carbon.  Its remarkably constant composition, hydroxyl functionality and unsaturation, make it uniquely versatile as a naturally occurring compound. While castor oil is available from several sources, regardless of origin, the chemical nature and composition are remarkably uniform.

Castor oil is unique among all fats and oils in that:

  • It is the only source of an 18-carbon hydroxylated fatty acid with one double bond
  • Product uniformity and consistency are relatively high for a naturally occurring material
  • It is a non-toxic, biodegradable, renewable resource


  • Coatings, Lacquers
  • Adhesives
  • Caulks, Rubber, Sealants, Urethanes
  • Pigment, Dyes, Inks
  • Lubricants
  • Hydraulic & Brake Fluids
  • Liquid Dielectrics, Sonar Fluids
  • Finishes & Polishes
  • Soaps, Surfactants

Available Grades

Color (Gardner)
Acid Value
% Moisture
#1 Refined Castor Oil
Dry #1 Refined Castor Oil
AA™ Standard Castor Oil
Filtered Neutral Oil (FNO)
DB™ Refined Castor Oil

Values shown in the above table are typical properties.

Typical Values for All Grades

Typical Values
Saponification Value
Iodine Value
Hydroxyl Value
Refractive Index
Specific Gravity
Viscosity (Stokes @25°C)

Values shown in the above table are typical properties.

Additional Information

#1 Refined Castor Oil

#1 Refined Castor Oil is a technical grade castor oil, which has only received a coarse filtration.  It is used in industrial applications, has the highest moisture content of these grades of oil, and is at times hazy. For more information, please click here. 

Dry #1 Refined Castor Oil

Dry #1 Refined Castor Oil is a premium grade of castor oil developed for a variety of uses including urethanes, packaging adhesives, & reactive hot melts. For more information, please click here.

AA™ Standard Castor Oil

AA Standard Castor Oil is a high purity castor oil for industrial use.  It is designed for applications requiring low color, with lower acidity and lower moisture content.

DB™ Refined Castor Oil

DB Refined Castor Oil is a premium grade of castor oil developed for uses where a low acidity and moisture content are critical.  DB Oil is an ideal product in such applications as sonar fluid, liquid dielectrics, and urethane reactions. For more information, please click here. 

Filtered Neutral Oil (FNO)

Filtered Neutral Oil (FNO) is a grade of castor oil having a very low acid value.

For Vertellus Castor Solutions within the Personal Care Market, please click here.

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