Vision (Definition) Vision is a feature of a person's brain that allows him to see. He must have normal eyes, optic nerves (that stretch from the eyes to the back of his brain), and visual cortex (the vision center in the brain), in order to see properly. An ophthalmologist is a doctor specializing in vision. ...Read more.
The halogens or halogen elements (/ËhÃ¦lÉdÊÉn, ËheÉª-, -loÊ-, -ËdÊÉn/) are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificially created element 117 (ununseptium) may also be a halogen.
Oleochemicals in the broad sense are chemicals derived from natural fats and oils, irrespective of whether they are derived from animal, marine or vegetable sources. Similar chemicals may be synthesized petrochemicals but they are classified as Synthetic Chemicals and not oleochemicals.Oleochemical Products.xamples of downstream oleochemicals and derivatives are fatty amines, soaps, alkanolamides, esters, etc. Uses of Oleochemicals. Oleochemicals are used as raw materials for detergents and cosmetics. They are used in the production of plasticisers and as additives for plastics, rubber and textiles.