Tierra Overseas is manufacturer and supplier of fixed oils in India.
A general term for a type of essential oil produced by plants that does not volatilize (i.e., is not aromatic). 
Also called as natural non-volatile oil. 
Some type of spot (permanent stain) left after evaporation. 
Fixed oils can be easily saponified. Posses low refractive index. 
Their major source is seeds of the plant. 
These are optically inactive.