Abietates

n Esters or salts of abietic acid, a principal constituent of ordinary rosin from which the products of commerce are derived, no attempt being made to separate abietic acid from the other acids which rosin is likely to contain. Metallic abietates, as such, are rarely encountered under this name but generally as resonates (Langenheim JH (2003) Plant resins: chemistry, evolution ecology and ethnobotany. Timber Press, Portland, OR; (2001) Paint: pigment, drying oils, polymers, resins, naval stores, cellulosics esters, and ink vehicles, vol 3. American Society for Testing and Material). Esters of rosin, however, are commonly described as abietates and not as resonates. For example, methyl abietate (Trademark – Abalyn), a mixture of the methyl esters of the rosin acids. C₁₉H₂₉COOCH₃. The article of commerce is colorless to yellow, almost odorless, thick liquid. d₂₀ ²⁰ 1.040. bp 360–365° with decompn. n _D ²⁰1.530. Flash pt 180–218°C. Insoluble in water, miscible with usual organic...