Solvent C9 Manufacturers in Ankleshwar. Aromatic hydrocarbons are a series of organic molecules that form flat ring-shaped bonds. Aromatic hydrocarbon C9/C10/C12 resins are conventionally named because they are defined by the number of carbon monomers in the chemical. Aromatic hydrocarbons have a distinctive aromatic odor and a typical Gardner color of 6 – 10 (dark yellow to dark brown). They are insoluble in water, low alcohols and ketones, however are soluble in aliphatic hydrocarbons and chlorinated hydrocarbon solvents. Solvent C9 Manufacturers in Ankleshwar.