Dioctyl Sebacate (DOS)
About This Product
Dioctyl sebacate, properly bis(2-ethylhexyl) sebacate, is the diester of sebacic acid with 2-ethylhexanol. Its interest from an oleochemical standpoint is the acid: sebacic acid is one of the few commercially important dibasic acids that is genuinely bio-based, produced by alkaline cleavage of ricinoleic acid from castor oil.
That origin gives the molecule a long, flexible, fully saturated aliphatic chain between the two ester groups, and the properties follow from it directly. The absence of an aromatic ring keeps the pour point very low and the viscosity index high, while the ester linkages give good thermal and oxidative stability and metal wetting.
Those are exactly the properties wanted in a synthetic lubricant, and diester base stocks of this type are long established in aviation turbine oils, compressor oils and high-performance greases, where they operate across a wider temperature range than mineral oil can. The same low-temperature flexibility is what makes it valuable as a cold-resistant plasticiser in polymer compounds.
Supply is linked to castor oil and sebacic acid availability, which is concentrated in a small number of producing regions, so confirm origin and current specification at enquiry.
Specifications
Applications
Packaging Options
- 70 kg/flexitank tote, 22,000 kg/20' container
- 190 kg/drum, 15,200 kg/20' container
- 920 kg/IBC tote, 18,400 kg/20' container
Start with the process and specification
- End use and required material or feedstock
- Critical analytical limits and physical form
- Handling temperature, storage and pack format
- Volume, documentation needs and delivery destination
Confirm the evidence before ordering
Grade, origin and certification are confirmed for each proposed source. A vegetable-derived feedstock is not automatically certified sustainable, pharmaceutical grade or suitable for every application; request the evidence needed for your intended use.
Product illustrations show representative material and packaging. The quotation confirms the actual source, grade, pack size and labelling.
Review documentation