SIEFs > SIEF pages > EC 264-705-7

EC 264-705-7: Castor oil, dehydrated

This is the SIEF Communication platform for the substance identified in the EC Inventory (former EINECS) as follows:

  • EC Name: Castor oil, dehydrated.
  • EC Number: 264-705-7
  • EC Description: N/A

Latest news: 29/11/2011 - SIEF formation initiated. Invitation to pre-SIEF members sent.

  • Current SIEF status: Under formation
  • Envisaged registration deadline: 2013
  • Lead Registrant: Alberdingk Boley
  • Specification for sameness: Not available
  • SIEF Agreement: Not available (see below)
  • LoA cost: Evaluation pending
  • Number of SIEF members: 1 member

Brief description of the substance

Castor oil is a vegetable oil obtained from the seeds of the castor plant (Ricinus communis). Castor oil is a triglyceride in which approximately ninety percent of fatty acid chains are ricinoleic acid (C18:1 OH), while oleic (C18:1) and linoleic (C18:2) acids are the other significant components. Catalytic dehydration converts castor oil into fats and glyceridic oils, castor, dehydrated. In the dehydration reaction, the hydroxyl group at the 12th position of the ricinoleic acid is removed along with a hydrogen atom from the 11th or 13th carbon atom to form water and a new double bond.

Fatty acids

ConstituentTypical concentration
Stearic acid (C18:0)<5%
Oleic acid (C18:1)<10%
Linoleic acid (C18:2)>10%
Alpha-linoleic acid (C18:3)<5%
Arachidic acid (C20:0)<1%
Behenic acid (C22:0)<1%
Ricinoleic acid (C18:1OH)<70%

Esters and fatty acids adducts

ConstituentTypical concentrationConcentration range
Adducts of fatty acids, C18 and C18-unsatd., C18-hydroxy and glycerides C18 and C18-unsatd., C18-hydroxy. Mono-, Di- and Tri-<45%

Specification for sameness

The REVODS Consortium prepared the following Specification for the identification and generic composition of the substance.

Lead Registrant

The following company has been proposed to be Lead Registrant: Alberdingk Boley
For a short presentation of Alberdingk-Boley, please visit the institutional website of the company.

SIEF Agreement

A SIEF Agreement is available for signature between each applicant SIEF participant and the Lead Registrant. SIEF membership is confirmed as soon as the Agreement is signed by both the applicant SIEF Member and the Lead Registrant of the SIEF.

Applicants are invited to send two paper copies of the appended SIEF Agreement, filled in with the relevant details and signed by a duly authorized representative, to the Lead Registrant at the postal address mentioned in this SIEF page. The Lead Registrant will then sign these documents: one copy will be sent back to the applicant, and the other will be retained for the archives.

If SIEF members have any questions or require further information, please either e-mail REVODS at, or contact us via the contact form of the REVODS website.

Any company that wishes to join this SIEF, please complete the SIEF joining form of the REVODS Website.