Purity % - 99% Packaging Details - Loose Grade Standard - Lab Grade Usage/Application - Paints And Coatings, Printing Inks And Reducers, Offset Inks, Agro-chemicals Soluble In - Chloroform Odour - Acetone CAS No - 76-64-1 Physical State - Liquid Aromatic hydrocarbons are a series of organic molecules that form flat ring-shaped bonds. Aromatic hydrocarbon C9 resins are conventionally named because it is defined by the number of carbon monomers in the chemical. C9 have a distinctive aromatic odour and a typical Gardner colour of 6-10 (dark yellow to dark brown).